Weapon Skill Damage

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== Weapon Skill Damage (Statistic) ==
This statistic has been inconsistently implemented, but it is always a straight damage multiplier. Most sources only apply to the first swing of the weapon skill, including the additional magic effect for hybrid weapon skills, or applied to all of a magic weapon skill. However, some sources apply to all swings of the weapon skill (like Magian Trials Weapon Skill Damage +n% weapons).
Even more confusingly, some sources of this that only apply to the first hit of Weapon Skills actually apply to both hits of some Weapon Skills, like Sturmwind and Atonement.
=== Job Points ===
== Calculating Physical Weapon Skill Damage ==
*Similar to Physical Damage, Weapon Skill damage is calculated as : 
**Damage = Base Damage × pDIF 
*In addition to Weapon Base Damage and fSTR/fSTR(2) in normal physical damage calculation, every swing of the weapon skill (including Double Attack, etc.) will get a base damage boost from your stats, called WSC (Weapon Skill Secondary Attribute Modifier, see below).
*This new base damage value will further be adjusted by a TP Multiplier called fTP. This value may vary depending the amount of TP you have and the Weapon Skill you perform. Elemental Gorgets and Elemental Belts each raise this number by 25/256 (only for the first hit unless it is an FTP replicating WS); when used together they raise the fTP modifier by 50/256.
** = floor(( Weapon Base Damage + fSTR + WSC ) × fTP)
** = floor(( Weapon Base Damage + (Ammo Damage) + fSTR(2) + WSC ) × fTP)
** = WS Base Damage × pDIF
*Each hit of the weapon skill will be calculated this way, using the appropriate base weapon damage (mainhand vs. offhand) and fTP, along with a novel pDIF value. FTP replicating WSs share their fTP with each additional attack.
== Calculating Magical Weapon Skill Damage ==
Magic Weapon Skill damage is affected by all the same modifiers as other sources of magic damage, but the base damage is calculated somewhat similarly to physical weapon skills:
* = floor(((152 + floor((WeaponLevel - 99) × 2.45) + WSC) × fTP) + dSTAT + MDMG Stat)
**If WeaponLevel < 100
*** = floor(((5 + floor((Level - 1) × 1.5) + WSC) × fTP) + dSTAT + MDMG Stat)
**Every step is floored before moving onto the step below.
**Every multiplication/division in the next step is floored after.
* = Base Magical WS Damage × Affinity × Staff × Resist × Resistance Rank Reduction × Weather+Day Bonus × (MAB ÷ MDB) × TMDA × Magic Critical Hit II Factor × WSD × Potency Multipliers × WSD Boost JT × Weapon Skill Potency Bonus × Augmented Weapon Skill Potency Bonus 
**Weapon Skill Potency Bonus includes "Name of Weapon Skill Damage +__%" damage bonuses on items such as the or the hidden bonuses on certain Ultimate Weapons.
**Augmented Weapon Skill Potency Bonus is the same as non augmented, but any augmented "Name of Weapon Skill: DMG +__%" bonuses, such as those from Trial of the Magians (e.g. Trial 1241 Burning Blade DMG +10%), are calculated separately and not additive with non-augmented bonuses.
** Magic Critical Hit II Factor is 1.0 without a crit II proc and 1.25 when crit II procs.
== Calculating Hybrid Weapon Skill Damage ==
Hybrid Weapon Skills are essentially physical WSs with a magical component. This is the only type of magic damage that is affected by pDIF, which means it is the only type of magic damage that can meaningfully "Critical Hit." Base damage for these weaponskills is calculated exactly the same as for Physical Weapon Skills. However, the overall damage is calculated as if the first hit of the weapon skill is duplicated, and the duplicate hit is magical and thus is affected by modifiers of magic damage.
: = (Base Damage × pDIF) + (Base Damage × pDIF × "Magic Damage Modifiers")
==Weapon Skill Secondary Attribute Modifier==
Weapon Skill Secondary Attribute Modifier (WSC) is an additional value applied to base damage that is calculated from a certain percentage of 1 or 2 Base Stats while performing weapon skills, blue magic, or Blood Pact: Rages.
Which stats and what percentage of each stat is used in the calculation vary based on the weapon skill / spell. 
For example all Archery weapon skills obtainable by level 75 (except Namas Arrow) have a WSC of STR 20% and AGI 50%. What this means is that 20% of a player's strength and 50% of a player's agility will be added to the base damage when performing any of those weapon skills.
== See Also ==
* Elemental Gorgets
* Elemental Belts
* Elemental Obis
* WSC
* fTP
* Base Damage
* pDIF
== References ==
*Original Weapon skill formula information (JP, Old Studio Gobli)
*Translated Weapon skill formula information (mac2much, FFXI Online)
*Removal of alpha for blue magic spells
*Official Forums' June 2014 WSC Overhaul List
*Official Forums' Blood Pact WSC Property Data List