Game Mechanics

There are multiple game mechanics that are required knowledge for endgame play.
== Main Stats ==
=== Strength (STR) ===
* Mainstat for Melee attacks.
* Increases base damage of Melee hits by STR/10, rounding down.
* Increases damage of all non-critical hits and glancing critical hits by (STR*3/20)% (+30% at 200 STR).
=== Dexterity (DEX) ===
* Mainstat for Pierce attacks.
* Increases base damage of Pierce hits by DEX/10, rounding down.
* Increases damage of all hits by (DEX/40)% (+5% at 200 DEX).
** This damage bonus is multiplicative on top of STR/INT, not additive.
* Increases DoT damage by (DEX/4)% (+50% at 200 DEX), hard capped at +100% damage (400+ DEX).
** This increase is separate from the stat damage bonus some DoTs receive.
** Currently bugged to not cap at 100%.
=== Intellect (INT) ===
* Mainstat for Magic attacks.
* Increases base damage of Magic hits by INT/10, rounding down.
* Increases damage of all critical hits by (INT/10)%, additive (+0.2x critical damage at 200 INT).
** Most classes have a base critical hit modifier of 1.75x, increased to 1.95x with 200 INT.
=== Charisma (CHA) ===
* Increases base damage of pets and guests by CHA/10, rounding down.
* Increases the effectiveness of multiple pet abilities.
* Reduces the cooldown of pet/guest Dragon skills by 1 for every 50 CHA, capped at -4 CD at 200 CHA.
=== Luck (LUK) ===
* Increases Crit by LUK/10, rounding down (+20 at 200 LUK).
* Increases Melee/Pierce/Magic and Block/Parry/Dodge by LUK/20, rounding down (+10 at 200 LUK).
* Reduces the cooldown of trinkets and on-demand specials by 1 for every 50 LUK, capped at -4 CD at 200 LUK.
** Regardless of the cooldown reduction, trinket/on-demand specials are floored at a minimum cooldown of 2 turns.
=== Endurance (END) ===
* Increases maximum HP by END * 5.
* (Player only) Increases Immobility resistance by END/5, rounding down (+40 at 200 END).
=== Wisdom (WIS) ===
* Increases maximum MP by WIS * 5.
* Increases Bonus by WIS/10, rounding down (+20 at 200 WIS).
* Decreases Health resistance by WIS/20, rounding down (-10 at 200 WIS).
== Secondary Stats ==
=== Offense ===
Offensive stats are split between bonus, boost, crit, and damage multipliers.
==== Bonus (Bonus to Hit/BtH) ====
* Increases chance to hit the target.
* Counteracts defensive stats (MPM, BPD). If the attacker's Bonus is equal to or higher than the target's Avoidance, attacks will always hit.
* If the target's Avoidance is 151 higher than the attacker's Bonus, attacks will always miss.
==== Boost (PowerBoost) ====
* Increases damage percentage.
* -100% Boost or greater is floored at dealing 0 damage.
==== Critical Hit Chance (Crit) ====
* Rolls out of 1-200 inclusive.
* Crit gained from items is capped at 100 (50%), including the 5 Crit that comes with virtually all classes.
*LUK increases Crit by LUK/10, rounding down (+20 at 200 LUK).
* Converted to regular hits by Block/Parry/Dodge.
==== Critical Multiplier ====
* Critical hits normally multiply damage by 1.75x.
** The following classes have a higher than normal base critical multiplier:
*** Chaosweaver has a base multiplier of 1.85x.
*** Cryptic has a base multiplier of 2.00x.
*** Ranger can increase its base multiplier up to 3.00x.
* INT increases critical multiplier by (INT/10) additively (+0.2x critical damage at 200 INT).
* Lucky Hammer and Thorn Replica increases critical multiplier by +0.1x and +0.05x respectively.
=== Defense ===
Defensive stats are split between avoidance, defense, and damage reduction.
==== Melee/Pierce/Magic Defense (Avoidance/Avd/MPM) ====
* Completely avoids damage and prevents on-hit effects.
* Rolls out of 151.
* Counteracted by Bonus.
==== Block/Parry/Dodge (Defense/Def/BPD) ====
* Results in Glancing Blows.
** Damage reduced to 5% and prevents on-hit effects.
*** Successfully glanced Critical Hits are treated as regular hits, damage is calculated using STR instead of INT.
* Rolls out of 151.
* Counteracted by Bonus.
==== Damage Reduction ====
* Reduces damage taken by a certain percentage, which further reduces damage taken after elemental resistances.
* Divided in three types: Non-Crit, DoT, and Crit.
* All types of Damage Reduction are capped at 90% for players, and 99% for enemies.
== Resistances ==
=== All Resistance ===
* Reduces damage from all sources (including healing), except Null.
** Also reduces stun and shrink chance.
=== Elemental Resistances ===
* Reduces damage from the appropriate element by (Eleres)%.
** Negative resistance results in increased damage (-100 = +100% damage).
* Elemental resistance (not Health or Immobility) has multiple layers of caps for the player:
** Resistance + All provided from equipment is hardcapped at 80.
*** If exceeded, this cap of 80 will be displayed on the status screen in parentheses.
** Resistance + All + Buffs are instead hardcapped at 99.
** If the player's combined Resistance + All exceeds 80, debuffs that affect resistance act as if the player's total resistance were 80.
** For example, if the player has 75 Fire resistance and 10 All resistance from their equipment:
*** Their resistance would exceed the hardcap, and would instead take damage as if they had 80 Fire resistance.
*** If the player were to receive a -10 Fire debuff, instead of 75 effective Fire resistance, they would have 70 effective Fire resistance.
*** If the player were to gain a +100 Fire buff while the debuff was active, they would gain a net 90 Fire, resulting in 99 effective Fire resistance.
* Health resistance is hardcapped at 99, and Health resistance from gear does not have the 80 cap.
* Immobility resistance has no cap.
* Monsters have no elemental resistance caps.
** >100 resistance will result in attacks of those elements (including DoTs) healing the monster.
** >100 Health + All will result in heals only healing for 1 HP.
=== Health ===
* Affects HP healing unless otherwise stated.
** Positive resistance results in reduced healing.
* For players, Health + All resistance is capped at 99.
** In addition, players lose Health resistance equal to [WIS/20], resulting in increased healing.
* For monsters, having over 100 Health + All results in all heals healing (including HoTs) for only 1 HP.
=== Mana ===
* Direct MP heals (potions, skills, weapon specials) are unaffected by Health or All.
** Mana DoTs and HoTs are affected by elemental resistance as normal.
** Many Mana HoTs do Health damage, and consequently scale off Health + All resistance.
* MP damage can be telegraphed by blue text on the damage type instead of red.
** Successful Block/Parry/Dodge against an MP-damaging attack results in 0 damage.
=== Immobility ===
* Reduces chance of successful stun by (Immobility + All)%.
** At 0 Immobility or less, stuns are always successful.
** At 100 Immobility or more, stuns are never successful.
* Successful stuns will display a message.
** [Target] is afflicted with [Stun name]!
* Players have additional mechanics related to Immobility:
** Players gain Immobility equal to [END/5].
** Players have a 66% chance of ignoring a turn of stun.
*** [Player] is not affected by [Stun]!
=== Shrink ===
* Reduces chance of successful shrink, separate from the existing shrink roll.
* No penalty for >100 resistance.
===Null===
*Enemy-exclusive element.
*Ignores All resistance, positive or negative.
* Can only be resisted with explicit Null resistance.
**Currently Necromancer is the only class that can gain any Null resistance.
==Weapon Specials==
Certain weapons have effects tied to them. See their dedicated page for details!
*On-Demand specials have a cooldown corresponding to the old procRate when these were still tied to the Attack button, i.e. ROUNDUP(100/procRate) - A special that used to have a 5% procRate now instead has a 20 turn cooldown.
* This cooldown is reduced by MIN(ROUNDDOWN(LUK/50,4)), i.e. every 50 LUK reduces this cooldown by 1 turn, up to a maximum of 4 turns.
* When you enter a battle, your currently active On-Demand special will start on a shortened cooldown equal to ROUNDUP(COOLDOWN/2), i.e. half of the normal cooldown, rounded up. As a byproduct of this, specials which have an even base cooldown have their initial cooldown reduced by 1 turn at 100 and 200 LUK, whereas specials which have an odd base cooldown have their initial cooldown reduced by 1 turn at 50 and 150 LUK instead. As a formula, this would be ROUNDUP((BASE COOLDOWN - MIN(ROUNDDOWN(LUK/50),4))/2).
==Combat Mechanics==
===Turn Order===
The following order is used in battle: 
#Player
#Pet
#Guest A
# Guest B
#Monsters
===Pets===
Pets will act automatically by default, targeting the last monster the player targeted. Pet base damage is increased by CHA/10, rounding down.
*Pets can be manually controlled by checking the "Manual Pet Actions" setting in the Options menu. This setting cannot be changed during combat.
*If a pet was swapped on the first turn of the battle, it will always act on that turn.
**In order to discourage juggling multiple pets, pets equipped during battle cannot act on their next turn.
***"[Pet] is immobilized by Waking Up!"
**Pets equipped outside of battle are unaffected by this restriction.
*All pets gain [Level / 2 + 10] Bonus on their attacks (+55 at level 90).
**Kid Dragon gains an additional 10 Bonus (+65 at level 90).
===Guests===
Guests offer ways to deal additional damage, get extra effects to help in battle, and take hits in the player's stead. Guest base damage is increased by CHA/10, rounding down.
*Guests are automatically removed from Inn Challenges.
*Monsters will randomly target party members every turn.
*Monsters will gain +60% base damage per guest in the party (additive).
*If a Guest was reduced to 0 HP at the end of the fight, they will not appear and be unable to act in subsequent battles without being healed first.
*Guests' HP and MP scale to player level (80 + level * 20 HP, 95 + level * 5 MP), but do not gain any extra HP/MP from the player's END/WIS.
===Effect Duration ===
Effects on a target count down by 1 at the start of a turn, whether or not they are stunned. This -1 duration is applied before the game checks what each effect does. This means that classes that have 3-turn stuns will have them say "4 turns remaining" if examined while on a Pet's turn. However, it will really only stun for 3 actions, not 4. Most effects will work on the turn that they are applied or inflicted. This means that effects that change resistances and deal multiple hits will usually affect subsequent hits on that turn. Effects that last for 2 turns will really only last for that turn and the following turn.
For example, the Simulacrum of Kathool's Attack 1 deals 3 hits of damage to its target and inflicts 'Inked' for 2 turns, reducing All resist by -50. If Inked is inflicted on the first hit, the next two hits will deal extra damage as a result of the debuff. Any monsters that act on the same turn after Kathool will also deal extra damage. Inked will still reduce resistances on the following 1 turn only.
*All debuffs with hitcheck always work in the same way as the Simulacrum of Kathool.
*Some effects without hitcheck (and buffs with hitcheck) only work starting on the following turn. This is due to differences in how various effects were coded by different programmers, and there is currently no consistent way to predetermine which effects work this way and which work normally.
*Strangely, weapons like the Ice Scythe's -10 Ice resistance and Sciuridaehotep's damage reflection will apply immediately on the hit with the effect. Future documentation may be available on both these topics.
*For effects that work the turn applied, refreshing the effect before it expires will set the duration of the effect to its original duration + 1. This does not apply to stuns or DoTs.
**For example, if The Unraveler applies 'Dream Terror' for 10 turns, and then applies 'Dream Terror' again before the effect expires, 'Dream Terror' will have an active duration of 11 turns (including the turn it recasts 'Dream Terror').
Effects that are applied to multiple targets, such as Glaisaurus's 'Dragon Roar', will share a counter among all targets, meaning that only 16 total turns will be buffed, regardless of how many targets have the effect.
===Hit Chance===
Attacks are calculated by rolling a number between 0 and 150 inclusive.
* Avoidance and Defense are rolled separately. Avoidance is rolled first. If the hit passes the Avoidance roll, a separate roll for Defense is performed.
*The attacker's roll is increased by their Bonus value and decreased by the defender's appropriate Avoidance/Defense stats between Melee/Block, Pierce/Parry, and Magic/Dodge, depending on the damage type. If the final value is positive, the hit is successful. Otherwise, the hit either misses or glances, depending on which roll failed.
*If the target's avoidance is 151 higher than the attacker's Bonus, they will always miss.
*An attack usually has to hit at least once in order to inflict its effect(s).
**Some effects are inflicted regardless of whether or not the attack hits or misses, such as Ezrajal's Celestial Blind. On monster pages, these effects are described as automatically inflicting. Effects that are automatically inflicted are inflicted before damage calculations.
*** Similarly, there are certain classes such as DoomKnight that can stun regardless of the target's Immobility resistance. On their pages, these stuns will also be described as automatically inflicting.
**Some effects require hitting the target to apply an effect to the attacker, such as Reaver's status purge granting it Reaver's Cloak. This is rare for both classes and monsters.
===Stuns===
Most classes and some monsters are able to inflict stuns. Stuns are checked against Immobility + All resistance.
*Stuns completely forfeit the turn, only reducing effect durations and player skill cooldowns as normal.
*Monsters with rotations will continue where they left off.
* Monsters with pseudo-cooldowns do not have their cooldowns reduced.
*If a player is stunned, there is a 2/3 chance to withstand the stun, being able to act normally for the current turn.
There are three categories of stuns: on-hit stuns, auto stuns, and chance stuns.
====On-Hit Stuns ==== 
*The vast majority of stuns in the game are on-hit, which is the primary method in which stuns roll against Immobility + All resistance. The attack must connect at least once without being resisted, and doing so inflicts the full stun duration.
*On-hit stuns are calculated by rolling a number between 1 and 100 inclusive. 
**If the number rolled is greater than the target's Immobility + All resistance, the stun is successfully inflicted.
**As the chance to stun is rolled per hit, multihit stuns have a higher overall chance of successfully stunning.
*Some on-hit stuns only have a chance to attempt to stun.
**Medewwsa's Head trinket (50%)
**BOOM-Voice Brew trinket (1%)
====Auto Stuns====
*Some classes have stuns that bypass both hit check and Immobility resistance, always stunning monsters regardless of resistance.
**SnugglePanda - Don't Say No
**Necromancer - Inspire Terror
***Inspire Terror only has an 85% chance to autostun; if it fails, it increases their Boost for 1 turn.
====Chance Stuns ====
*Chance stuns are stuns that can trigger on any turn that the applicable effect is active. They bypass Immobility resistance and are characterized by a short pause preceding the affected target's turn if the stun fails for that turn.
**DoomKnight - Malefic Grasp
===Monster Anti-Stun Mechanics===
Some monsters have anti-stun mechanics that are not related to Immobility.
===== Stun Removal=====
Some monsters do not use Immobility to resist stuns; instead, if they take direct damage while stunned, they automatically remove all stun-type effects. 
*As most stuns are on-hit, this effectively makes these monsters stun immune.
* Although auto stuns ignore hitcheck, the stun will be removed if the monster receives a hit. The only way to stun such a monster is to miss the attack.
*Chance stuns work normally.
=====Unshakeable=====
Some monsters will apply 'Unshakeable' to themselves for the rest of the battle after being stunned, becoming immune to all future on-hit stuns.
*+300 Immobility.
===Shrink ===
Some items and monsters (i.e. Linus pets and Cysero) are able to Shrink. Shrink is checked against Shrink + All resistance.
*Shrink reduces the size of the target, removes 10% of their current HP (regardless of resistances), and reduces their maximum HP by 10%.
*Targets can only be shrunk once in a fight.
===Damage over Time (DoT)===
Damage over Time are a category of effect that inflicts damage to a target before their turn begins, that cannot miss but does not crit. Damage over Time is normally based on the true damage range of the equipped weapon (without stat damage) However, some DoTs (such as Epoch's Laser Blades) do benefit from stat damage, and use the following formula to determine stat damage:
\text{Stat Damage} = \left \lceil 3.125*\sqrt{\frac{\text{MAINSTAT}}{2.5}}-5 \right \rceil
Where MAINSTAT is the weapon's mainstat (STR for Melee, DEX for Pierce, INT for Magic).
* If a Scythe is being used, instead uses the highest mainstat.
In addition, all DoTs have their final damage modified by (DEX/4)% at time of application, with an upper limit of +100% damage at 400+ DEX.
Heal over Time (HoT) effects effectively are DoTs that deal Health element damage, healing instead of dealing damage. DoTs inflicted on enemies with 100+ resistance will appear as their original element but deal negative damage, healing the enemy. Unlike DoTs, HoTs will not have their healing increased by DEX.
===Locked Skills===
Some classes have skills that are locked behind certain conditions. There are several categories of how these skills are locked and how to unlock them.
*Skill requires the last hit of your last attack to have connected
** Will be locked if you attack again and miss/get blocked.
**Will remain available if a non-attack action is used.
*Skill requires another skill to connect to unlock
**Will be locked if you attack with a different skill, regardless of hitting or missing.
**Will remain available if a non-attack action is used.
**Exception: Only the first attack in Epoch's Combo requires the last hit to connect. Attacks 2 and 3 only require Epoch Combo to have been used as the previous attack.
*Skill requires active effect
**Rogue - Surprise Attack
*Skill requires fulfilled stat criteria
**Requires current Health to be a certain percentage of maximum HP. 
***DragonLord - Dragon Heart (non-Rage/Wrath)
**Skills will re-lock if the criteria is no longer met
*Charge Time Skills
**Will automatically be on cooldown at the start of combat.
***This cooldown is not the actual cooldown of the skill; it is a delay before it can be first used.
**Pyromancer - Rebirth
**Underworld Epoch - Timeshift
* Change-Charged Skills
**Requires using a skill, waiting for its cooldown to pass, and then using that skill again.
**DoomKnight - Inner Darkness
**SoulWeaver and Master SoulWeaver - Soul Synch
This is not a comprehensive list; merely examples.
== Obscure Combat Mechanics==
====Base Damage Cap====
The base damage of player, pet, and guest damage is subject to a damage cap:
\text{Base Damage Cap} = \sqrt{\text{Player Level}}*100
This cap is calculated after factoring in mainstats and racial weapon specials.
*Other modifiers to damage such as Boost, Resistances, or Crits are applied as usual.
*At level 90, the global damage cap is 948. This is most noticeable when using Chi Bomb.
====Extra Damage====
Some classes deal increased damage on skills when certain conditions are met. These generally don't boost trinkets and On-Demand specials.
=====Base Damage =====
Some classes increase the damage of their skills by a flat amount. This increase can be distributed across the total damage of the attack, or increased for each hit of the attack. Attacks that deal multiple hits will thus gain significantly more damage. Within the wiki, these increases are called Base Damage.
* With +10% Base Damage, 5 hits of 20% (100% total) becomes 5 hits of 22% (110% total), while 1 hit of 100% becomes 1 hit of 110%.
*With +10% Base Damage per hit, 5 hits of 20% (100% total) becomes 5 hits of 30% (150% total), while 1 hit of 100% becomes 1 hit of 110%.
The following are examples of classes that gain Base Damage:
*DeathKnight gains +50% base damage in Consuming Presence. 
**Consuming Presence can provide even more base damage depending on which DeathKnight Relics are equipped, up to an additional +50% base damage (+100% total).
*Paladin gains +60-120% base damage based on stacks of Radiance. 
**Paladin also gains +100% base damage while Smites are toggled.
*Patience DragonLord and Bulwark DragonLord both gain 5% base damage each round of combat, capping at +150% base damage after 30 turns.
*Wrath DragonLord gains up to +100% base damage based on missing health when using empowered Darkness Dragon Spirit.
*Pirate gains +10% base damage each time it uses an Opening or Cursed Treasure, capping at +50% base damage.
**While Cursed Treasure is active, the base damage is doubled, capping at +100% base damage.
*Pyromancer gains +5% base damage if INT or DEX exceed your STR.
**This is replaced by +25% base damage if INT and DEX both exceed your STR and are within ceil(level/10) of each other.
**Pyromancer also gains +100% base damage once it has built 5 stacks of Magefire.
*** This is replaced by +150% base damage while 'Devouring Magefire' is active (up to a total of +175% base damage, factoring in the DEX/INT bonus).
*Technomancer gains +2% base damage for every 1% of missing MP, capped at +200% base damage at 0% MP.
The following are examples of classes that gain Base Damage per hit:
*Ascendant gains +5-25% base damage per hit based on stacks of Ageisk - The Lost Chapter.
*Ranger gains +5% base damage per hit if STR or DEX exceed your INT.
**Ranger instead gains +25% base damage per hit if STR and DEX both exceed your INT and are within ceil(level/10) of each other.
*Riftwalker gains +10-50% base damage per hit based on stacks of Rift Cutter.
====Extra Actions====
Some classes can make multiple actions in a single turn. The way this works is that all of the class's skills have a function that grants an additional turn based on a condition being met. Colloquially they are referred to as "double turns" due to the majority of classes that have access to extra actions take one extra after their first. 
The following classes have access to extra actions in some way:
*Archivist can make 5 additional actions after using Ultimate Orb Creation.
*Avatar of Time can make 1 additional action after using Orb of Time or Temporal Reset.
*Chaosweaver can make 1 additional action after consuming 1 Soulthread to empower Soul Gambit.
*Chronomancer and Chronocorruptor can make 1 additional action after using Blink.
*ChronoZ can make 2 additional actions after using Blink Forward.
*DeathKnight can make 1 additional action after using Necrotic Shift.
*Wrath DragonLord can make 1 additional action after using empowered Fire Dragon Spirit.
*Epoch can gain 1 additional action per turn, but the method depends on which artifact it has equipped, or has no artifact equipped at all: 
**Base Epoch and Eternal Epoch consume all Momentum on using Timeshift, gaining 1 additional action per turn for each Momentum consumed (9 or 12 max).
**Corrupted Doom Epoch only consumes up to 6 momentum per Timeshift, meaning it can only get up to 6 turns of additional actions.
**Underworld Epoch instead gains 1 additional action per turn passively if it starts a turn with at least 5 Momentum, but gains stacking debuffs whenever one is gained.
**Dragonbyte Epoch instead starts each battle with 1 additional action for 2 turns, and can gain 4 turns of additional actions after using Hack.
* Ninja can make 1 additional action with its Ambush mechanic, which is granted at the start of battle and after using Vanish, Shadow Seeker, or a Catalytic Flow with 3 Venom DoTs.
*Pyromancer can make 1 additional action after using Conflagration.
*Ranger can make 1 additional action each turn as long as Focus is 5.
*ShadowWalker of Time can make 1 additional action after using Antumbra or Umbra.
Extra actions generally follow these specific rules:
*Gear can be freely changed around after each action, allowing for risk-free damage.
*Effect durations do not change.
*All class cooldowns will be lowered for each extra action taken.
**Trinkets and On-Demand specials will not have their cooldowns lowered.
However, extra actions have small nuances that must be taken into account: 
*Using a Trinket skill, a potion, or an On-Demand special as the first action will delay your extra actions by one turn. This can usually be circumvented by using them as the second (or final) action.
**This means that for all Epochs (except Underworld Epoch) and Ranger, they will always have their full amount of extra actions.
**For Archivist, using a Trinket skill or a potion will consume two of the extra turns granted by Ultimate Orb Creation.
***This same interaction can be used with Dragonbyte Epoch to gain extra turns from a second use of Hack for a longer set of uninterrupted extra actions.
** For ChronoZ, using any of the above will consume an extra action granted by Blink, while delaying the second extra action (if available) by one turn.
*Due to a bug, you will generally lose your extra action if the last enemy you damaged was defeated on your first turn.
**Exceptions to this rule are Avatar of Time, which keeps its extra actions, but has to manually retarget an enemy after defeating an enemy, and ChronoZ, where double turns are kept, and another enemy is also automatically targeted.
====Regenerating Damage====
Some monsters and classes are able to immediately regenerate HP based on direct damage taken.
*When damage is dealt, it is first subtracted from HP and then immediately regained.
**If a hit deals lethal damage, the target will simply die and regeneration will not trigger.
*As this is internally treated as healing in most cases, All and Health resistance will affect regeneration values. 
**If an effect is applied that increases -Health (such as skills that lower All without also increasing health), the increased healing will apply before regeneration is applied, increasing health gained.
* These effects only work on hits that pass both the Avoidance and Defense rolls.
**Glancing blows will not trigger this effect.
The following classes have access to regeneration:
*DoomKnight's Void Barrier regenerates 50% of direct damage taken, affected by Health resistance.
The following monsters have access to regeneration:
*While Archdryad Malydrys and Argus Skywatcher are both alive, they regenerate 100% of damage the other has taken.
*Simulacrum of Kathool regenerates 200% of damage taken if the attacker is over 50% HP.
*Sinnocence and Sinnocence the Undying regenerate 200% of damage dealt while a weapon with a 'of Doom' or 'of Destiny' is equipped.
* Sepulchure regenerates 110% of damage taken by an element he has any negative resistance against, except All resistance.
**He will still regenerate HP even if the damage element would still be positive after factoring in his All resistance.
*Bound Terror regenerates 50% or 100% of damage taken if a character's MP is below 66% and 33% respectively.
*Wrath regenerates 100% of damage from critical hits, including glancing criticals.
*The Engineer has conditional regeneration, depending on the state of the drones:
**If the Defense Drone is alive, it regenerates 100% of damage taken if the attacker is over 50% HP.
**If the Offense Drone is alive, it regenerates 100% of damage taken if the attacker if below 50% HP.
**This means if both drones are alive, it regenerates 100% of damage taken.
*Pride regenerates 100% of damage taken if the attacker's status effect count is equal to or greater than Pride's Superiority.
*Reaver regenerates 10X% of damage taken when taking more than 1 hit per turn, up to 100% on the 11th and subsequent hits.
*Twisted Amalgam EX regenerates 85% of damage taken from critical hits, including glancing criticals.
*Cryozen can make all monsters regenerate 25% of damage taken.
*Mega Fluffy Tog regenerates 75% of damage taken while it is above 75% HP, and regenerates 100% of damage taken below 75% HP, ignoring Health and All.
*Drakonnan conditionally regenerates 50% of damage taken from critical hits.
*Eggsalted Chickencow conditionally regenerates 33% of damage taken from non-critical hits or critical hits.
*Darkon regenerates 25% of damage taken from critical hits during his second phase.
====Retaliating/Reflecting Damage====
Some monsters and classes are able to indirectly deal damage to their attacker when they receive direct damage (damage is still taken). There are two categories: damage dealt based on the defender's damage range (retaliates), and damage dealt based on the damage taken (reflects). In both cases, attacker resistances are completely bypassed, and attackers cannot be reduced below 1 HP from retaliates or reflects. Additionally, a retaliate/reflect is only triggered if the target survives the hit.
Retaliating damage subtracts a flat amount of damage per hit, based on the caster's base damage range. This damage does work against Glancing Blows. Unless otherwise stated, all sources of retaliating damage deal half as much damage with each successive instance, until they are floored at 0 damage.
The following classes have access to retaliating damage:
*Pirate's Backstab retaliates 100% of weapon damage to its targeted opponent on the first hit each turn.
*Mage's Thorny Shield retaliates 100% of weapon damage.
*DragonMage's Thorny Shield retaliates 100% of weapon damage.
*Ascendant's Thorny Shield retaliates 100% of weapon damage.
*Shadow Hunter's Counter Attack combo retaliates 22% of weapon damage.
*Pyromancer's Magma Bubble retaliates 50% of weapon damage.
The following monsters have access to retaliating damage:
*Oratath retaliates 75% of its true damage range while affected by 'Holy Shield'.
*Magester Mislav retaliates 100% of his true damage range while affected by 'Deflection Barrier'. This damage does not reduce.
*Couerihem retaliates 50% of its base damage range while affected by 'Warbeast Radiance'.
*Warlic retaliates 100% of his true damage range while affected by 'Flame Shield'. This damage does not reduce.
**This is currently bugged, and instead use the attacker's damage range.
*Sek-Duat retaliates 50% of his true damage range while affected by 'Light Flare'. This damage does not reduce.
*Notha, Bane of Destiny retaliates 75 damage while affected by 'Celestial Rebuke'. This damage does not reduce.
*Khasaanda retaliates 100% of her true damage range while affected by 'Foresight'.
*Master Twang retaliates 50% of his base damage while affected by 'Defensive Stance'. This damage does not reduce.
*Keelhaul, the Sunken retaliates 100% of his base damage once per turn while affected by 'Backstab'.
*Chaos Lord Mystic retaliates 50% of his true damage range while affected by 'Chaotic Growth'. This damage does not reduce.
Reflecting damage subtracts HP from the opponent based on a percentage of the amount taken. This damage does not work with Glancing Blows.
The following classes have access to reflecting damage:
*PumpkinLord's Bramble Shield reflects 25% of damage taken.
*Evolved PumpkinLord's Bramble Shield reflects 100% damage of taken on the first turn, followed by 25% of damage taken for the next 4 turns.
*DoomKnight's Void Barrier reflects 100% of damage taken, halving each time.
The following monsters have access to reflecting damage: 
*Sciuridaehotep reflects 150% of damage taken while stunned, and when taking over 3000 damage in one hit.
*Lust passively reflects 50% of damage taken.
*While attuned to Lust, Pandora and Pandora EX passively reflect 75% of damage.
*Ayauhnqui reflects 75% of damage taken while affected by 'Hibernation'.
*Illumina reflects 100% of damage taken by an element she has negative resistance to, or all damage if she has -All.
*Drahr'Hatir reflects 100% of damage taken while affected by an 'Aura of Creation' that was applied while its scales were up.
*While affected by 'Back Off', Xang (and Xing in Chaos Twins) reflect 100% of damage.
*After enraging, Super Mega Ultra Darkness Dracolich reflects 10% of damage taken while affected by 'Corrupting Purpose'.
*King Alteon reflects 50% of damage taken while affected by 'Chaotic Will'.
*Darkon reflects 25% of damage taken from critical hits during his second phase.
*Suki reflects 50% of damage taken while affected by 'Amplified Reactions'.
*Carnax reflects 5% of damage taken while affected by 'Psionic Link'.
*Chaos DragonLord and her allies reflect 40% of damage taken while affected by 'ANATHEMA'.
*Dreadblight Aius reflects 25% of damage taken while affected by 'Red Potion H3'.
*Jaania (Extreme) reflects 10% of damage taken while her Tome is targeted.
====Deathproof====
Some monsters and classes are able to prevent themselves from taking lethal damage from all direct damage. 
This is handled mechanically by taking any hit damage that would equal or exceed remaining HP, and reducing it to current HP/2, rounded down, regardless of elemental resistances, eventually reducing HP to 1 and making all normal damage equal to 0. Although unofficially called 'Deathproof', the one way around this state is to use a DoT for the final blow.
The following classes have access to Deathproof:
*Chaosweaver can become Deathproof for 2 or 3 turns, depending if Soul Aegis is enhanced or not.
*DeathKnight can become Deathproof and also sets HP to 1 for 3 turns with The Edge of Death, after which it heals.
*Wrath DragonLord can become Deathproof for 3 turns with an empowered Earth Dragon Spirit.
The following monsters have access to Deathproof:
*Bound Fate in The Reliquary and The Apex can become Deathproof for 3 turns.
*Dreadblight Aius can become Deathproof for 4 turns.
*Chaos DragonLord can become Deathproof for 6 turns.
*Nythera is Deathproof during phase 1 and phase 2.
*Iadoa is Deathproof while affected by a 'Vision'.
*En and Tropy, Reaver, Zeclem, the DeathKnight, Chaos Hydra, Wolfwing, Mega Fluffy Tog, Maximillian Lionfang, and Artix are permanently Deathproof.
Any hit that triggers Deathproof on an enemy provides a popup: 
*Your foe refuses to fall to your direct attack!
*(There is no equivalent popup for when a Deathproof player survives an otherwise lethal attack.)
====Residual Stun====
Rather than be immune to stuns, some bosses instead can only be stunned once. After taking direct damage while being stunned (i.e. they must be hit), they gain +300 Immobility for the rest of the battle.
*Due to requiring direct damage to actually trigger, Necromancer's and Snugglepanda's autostuns do not trigger the Immobility buff.
*The mechanic has been implemented in two ways so far:
**The original implementation (i.e. Uaanta, Avatar of the Makers) just gives Immobility while retaining the full stun duration.
**The modern implementation (i.e. The Chaos Slayers) gains Immobility, but also purges all stuns when triggered, replacing them with a 1 turn stun. Within the wiki, this is referred to as a (true) residual stun.
***The stun portion of this only happens once in a fight; if they are somehow stunned again, the stun is just purged instead of being replaced.
====Damage negation====
Some monsters can negate damage without mechanically regenerating HP or gaining resistance. When certain conditions are met or failed to be met, some monsters will simply receive 0 damage, making them immune to +Health tricks. 
Some monsters only negate either direct damage or DoT damage when conditions are fulfilled:
*Goose Dragon (Chaos) and Goose Dragon (Extreme) are conditionally immune to direct damage or DoTs if they are currently holding Potion/Blade of Awe or Sock/Ice Scythe respectively.
*Khasaanda negates all direct damage received when triggering 'Foresight'.
*The Adjudicator is conditionally immune to either direct damage or DoTs depending on what phase it is in.
*Yalla negates all direct damage received, when her HP is between 50-40%, or when below 10%.
Some monsters are completely immune to damage when conditions are fulfilled:
*Braytes San, the Heretic becomes immune to damage if the attacker is not affected by 'Lightsworn'.
*Iadoa becomes immune to damage if any of his Visions are still active and direct damage is dealt while his health is below 10%.
*Maximillian Lionfang becomes immune to damage once his health is below 10%.
Some monsters have "phases" to their fight, reached by reducing their HP to certain amounts. When hitting this threshold, they become immune to all damage until they act:
*Goose Dragon, the Untitled changes phases at 80/40% HP.
**Goose Dragon (Chaos) and Goose Dragon (Extreme) change phases at 60% HP.
*Kitsune changes phases every 20% HP (80/60/40/20).
*Notha, Bane of Destiny changes phases at 50% HP.
*The Super Mega Ultra Darkness Dracolich and Draco become immune to damage on the turn when their HP is first reduced below 50%.
*Sek-Duat changes phases at 80% HP or 4 turns after the battle starts and at 40% or 12 turns after the first phase change.
*Tibicenas changes phases at 60% HP.
*Gorgok, the Relentless changes phases at 33% HP or 15 turns after his first phase change.
*Tomix changes phases at 40% HP.
*Ash Dragonblade changes phases at 50% HP.
*Darkon changes phases at 70/20% HP.
*Jaania changes phases at 66/33% HP.
*Jaania (Extreme) changes phases every 25% HP (75/50/25).
====Reactions====
Some monsters will do different things after either being hit a certain number of times or losing a certain amount of HP. These can activate even if it is not the monster's turn.
*Simulacrum of Uthuluc will lose its All resistance if it takes 4 critical hits over 4 turns since it last gained All resistance.
*Frallmar, the Scourge of Frostval will lose its All resistance if it takes 8 hits of Fire damage since it last gained it.
*Sloth will change heads and use a different attack based on how much damage was taken on its previous turn.
*Roktoru will lose its All resistance if it takes 6 hits of Energy damage over 6 turns since it last regenerated its horns.
*En or Tropy will automatically gain +200 Immobility if the other is stunned.
*Drahr'Hatir will lose its All resistance if it takes more than 15 hits since it last gained it.
*Drahr'Dolaas will lose its Boost% if it takes more than 1/6 of its maximum HP in direct damage since it last gained it.
*Illumina will immediately fully heal once if her HP falls below 50%.
*Yalla becomes immune to direct damage at 50% HP until 40%, and at 10% HP until defeated.
*Nythera will change phases at 66/33% HP, setting her HP to 66/50%, and performing different attacks after each threshold.
* Kitsune transforms at 80/60/40/20% HP after receiving direct damage, setting its health to those thresholds, purging all effects, and nullifying all damage for the rest of the turn.
* Mega Fluffy Tog only takes 25% of direct damage until its HP falls below 75% HP, below which it negates 100% of direct damage.
====Reactive Effects====
Some monsters will automatically gain or lose effects after being hit a certain number of times since the monster last attacked. 
This mechanic is sometimes referred to as a "When Shield", as Doctor When was the first monster to use it. Reactive effects can only be triggered once between a monster's attacks, meaning that stunning a monster (such as with Necromancer's Inspire Terror) and triggering its reactive shield will prevent it from reapplying its reactive shield for the remaining duration of the stun. However, this also means that if the monster is stunned but their reaction is not triggered on that stunned turn, they will "remember" the number of hits taken and will react earlier against the next attack(s). 
*Doctor When automatically applies +300 Melee/Pierce/Defense after being hit 2 times.
*Drahr'Dolaas automatically applies +300 Melee/Pierce/Defense after being hit 4 times.
*Illumina automatically applies +500 Melee/Pierce/Magic after being hit 4 times.
*The AdventureFiend automatically applies +600 Melee/Pierce/Magic after being hit 2 times.
*Yalla, the Arch-Druid gains +5 resistance for each hit of an element she receives as direct damage for 3 turns per element, capped at 200. This duration is refreshed if she receives further damage from those elements.
*Eulin II automatically applies +30 All after being hit 2 times.
====Constant Damage====
A new damage type added with Rolith. Constant damage is exact as it says: constant. Constant damage is unaffected by any modifier (Boost, res, crit, etc).
The following monsters use Constant damage: 
*Rolith's Togs deal Constant Null damage.
==Monster Races==
Although usually cosmetic and for flavor, certain classes, skills, and weapons have effects on certain races. Special Weapons features a list of items that have triggered effects against certain types.
Category:Guide