Doublestrike

Doublestrike grants a character a chance to make an additional attack roll with their main hand weapon any time they make a main hand melee attack. The additional roll is made on the target of the initial attack. Doublestrike only applies to melee attacks.

Doublestrike was introduced as part of the Update 5 combat changes. Many attack speed bonuses were converted to Doublestrike effects at that time.

Increasing Doublestrike above 100 does not provide any additional benefit.

See also: Doubleshot



Morale bonus
Most bonuses from equipment are Morale bonuses; only the highest Morale bonus will apply.
 * Medusa Fury, found on weapons derived from the Blade of Fury, grants a +5% Morale bonus to Doublestrike when the wielder is below 25% hitpoints.
 * The Henshin Mystic ability, Quick Strikes, gives a maximum 25% Morale bonus for 10 seconds.
 * In Monk Wind Stance, the completed Way of the Sun Soul set grants a 6% Morale bonus to Doublestrike for 10 seconds with a natural 20 on an attack roll confirmed as a critical hit. This and other benefits of the ability cannot trigger more than once every twenty seconds.

Enhancement bonus
Only the highest enhancement bonus to Doublestrike applies.
 * Whirlwind, a Ranger Tempest core enhancement, grants a +5% enhancement bonus to Doublestrike while dual wielding.
 * Monk Wind Stances grant a +2.5%/+5%/+7.5%/+10% enhancement bonus to Doublestrike.
 * The activated Celerity enhancement grants a +30%/+40%/+50% enhancement bonus to Doublestrike for 15 seconds with a cooldown of 5 minutes.
 * The Legendary Dreadnought Tier 4 ability Lightning Mace grants a +15% enhancement bonus to Doublestrike for 6 seconds when you crit with a Club, Greatclub, Heavy Mace, Light Mace, Morningstar, or Quarterstaff in your main hand.
 * Doublestrike items
 * Alchemical Crafting Tier 2 Martial Air effect includes a +6% bonus to Doublestrike.

Other typed bonus

 * Alchemical bonus - Cannith Combat Infusion on Fabricator's Bracers grants a temporary 5% alchemical bonus to Doublestrike.
 * Artifact bonus - The Draconic Ferocity set bonus on Flawless Black Dragon Armor/Helm of the Black Dragon grants a +3% artifact bonus to Doublestrike.
 * Competence bonus - The Kensei fighter capstone includes a +15% competence bonus to Doublestrike.
 * Music bonus - Warchanter's chant Inspire Recklessness grants up to a +6% Doublestrike to all nearby allies.
 * Profane bonus - The Shadowdancer innate ability Shadow Training IV grants a +3% profane bonus to Doublestrike while wielding weapons that qualify for Weapon Finesse.
 * Sacred bonus - The Paladin spell Zeal grants a +10% Sacred bonus to Doublestrike to the caster.
 * Action Boost bonus - Double Strike Boost provides +10% to +30% Action Boost bonus to Doublestrike for 20 seconds. (Available to The Nature's Warriors and Swashbucklers

Untyped
Untyped bonuses stack.
 * Many Swashbuckler class tree abilities add accumulating Doublestrike bonuses (5 in cores, 10 for empty off-hand)
 * Shadow Double, a Ninja Spy ability, grants 100% Doublestrike for 6 seconds.
 * The Shield Mastery / Improved Shield Mastery feats grant a +3% / +8% bonus to Doublestrike while wearing a shield.
 * The Unyielding Sentinel Tier 2 ability Legendary Shield Mastery grants a +[2/4/7]% bonus to Doublestrike while wearing a shield.
 * Opportunist, a Rogue Special Ability feat, grants a +3% bonus to Doublestrike.
 * The Natural Fighting Druid feat grants a +6% bonus to Doublestrike when in animal/magical beast form, and can be taken up to 3 times.
 * The Grandmaster of Flowers Tier 2 ability Running with Wind grants +[1/2/3]% to Doublestrike if you are in Monk Wind Stance.
 * The Grandmaster of Flowers Tier 2 ability Hail of Blows grants +3% to Doublestrike.