Ruin IV (Final Fantasy XIV)

Ruin IV is a spell from Final Fantasy XIV that instantly deals heavy area of effect damage.
==Mechanics==
Base mechanics	
*Deals unaspected magic damage to target and nearby enemies
*Target is hit with a potency of 430; potency is reduced by 60% for all remaining enemies
*Can only be used while under the effect of 
*Activates the global cooldown (GCD)	 	
Traits 	
*Innate: increases damage by 30%
*Innate: causes and to grant Further Ruin for 60 seconds 	 	
Formulae 	Base damage formula:Damage = \lfloor Potency * f(Intelligence_{DMG}) * f(Determination) \rfloor * f(Magic Damage) \rfloor * 1.3 \rfloorWhere potency is 430 for main target and 172 for all remaining enemies.	Base damage formula:Damage = \lfloor Potency * f(Intelligence_{DMG}) * f(Determination) \rfloor * f(Magic Damage) \rfloor * 1.3 \rfloorWhere potency is 430 for main target and 172 for all remaining enemies.	Base damage formula:Damage = \lfloor Potency * f(Intelligence_{DMG}) * f(Determination) \rfloor * f(Magic Damage) \rfloor * 1.3 \rfloorWhere potency is 430 for main target and 172 for all remaining enemies.
Formulae 	Recast time formula:Cast = \lfloor ( 100 - Haste ) * \lfloor ( 2 - f(Spell Speed) ) * 2500 \rfloor / 1000 \rfloor / 100 	Recast time formula:Cast = \lfloor ( 100 - Haste ) * \lfloor ( 2 - f(Spell Speed) ) * 2500 \rfloor / 1000 \rfloor / 100 	Recast time formula:Cast = \lfloor ( 100 - Haste ) * \lfloor ( 2 - f(Spell Speed) ) * 2500 \rfloor / 1000 \rfloor / 100
==Use==
Ruin IV is an instant cast spell that deals heavy damage to a single target and splash damage to nearby enemies. While Ruin IV suffers from a 60% potency dropoff after the first hit, its naturally high potency means it is still one of the most potent AoE actions in the Summoner's arsenal. Ruin IV can only be used while the Summoner is under the effect of . Further Ruin is granted for 60 seconds upon using or , and is consumed upon use.
Ruin IV is best used while , , or are not active, as these abilities provide Summoners with other powerful instant cast spells. It should instead be used between Trances, taking priority over and due to its superior power and cast time. With Further Ruin's long duration, Summoners should have no problem fitting Ruin IV wherever they see fit.
As an instant cast spell that activates the global cooldown (GCD), Ruin IV can be used to weave abilities that are off the global cooldown (oGCD), such as , in between spellcasts.
== Patch history ==
Version 	Changes
Stormblood 	
*Added as a single-target spell with 200 potency, 2% base MP cost, and 2.5 second cast time
*Replaced and while under the effect of Further Ruin
*Level 62 trait gave 15% chance of granting Further Ruin for 30 seconds whenever the summoned pet used an action
* inflicted , increasing Ruin IV's potency against the afflicted target by 20 for 15 seconds
Patch 4.1 	
*Cast time reduced to instant
*Ruin Mastery replaced with , which instead upgraded to Ruin IV
Shadowbringers	
*MP cost set at 200 with MP system overhaul
*Potency reduced to 120
*Additional effect added that increased potency to 190 if the target was afflicted by a Bio or Miasma effect applied by the caster, or to 260 if both effects were applied
*Enhanced Ruin II effect changed to grant Further Ruin upon using , to a maximum of 4 stacks with indefinite duration
*Level 72 trait allowed to spread Ruination to nearby enemies
*Level 74 trait added, allowing to also generate Further Ruin
*Level 76 trait extended Ruination duration to 30 seconds
Patch 5.08 	
*Potency increased to 260
*Additional effect removed
Patch 5.1 	
*Potency increased to 300
*Tri-disaster and Bane no longer inflict Ruination
Endwalker 	
*Now hits all enemies in a 5-yalm radius around the target
*Potency increased to 430 for the first enemy hit, with 60% reduced potency for all remaining enemies
*MP cost increased to 400
*Enhanced Ruin II and Enhanced Egi Assault removed
*Level 62 trait Enhanced Energy Siphon added; grants Further Ruin for 60 seconds when using Energy Drain or Siphon
*No longer tied to Ruin II
*Further Ruin no longer stacks.
Version 	Changes
Stormblood 	
*Added with 1500 potency, 1.8 second cast time, and 2.3 second recast
*Could only be used during
Shadowbringers	
*Potency increased to 1600
*Cast time reduced to 1.5 seconds
*Recast increased to 2.4 seconds
*Could now only be used while Demi-Bahamut was active rather than Dreadwyrm Trance
Patch 5.1 	
*Removed
==Gallery==
Ruin IV PvP from Final Fantasy XIV icon.png|PvP icon.
Category:Summoner actions in Final Fantasy XIV