Warmonger's Weapon

Weapon Spell. For 3...11...13 seconds, if target ally attacks a foe who is not attacking, that foe is interrupted.

Weapon Spell. (3...11...13 seconds.) Attacks interrupt an action. Does not interrupt attacking foes.

Progression
Channeling Magic Duration	0 3 1 4 2 4 3 5 4 6 5 6 6 7 7 8 8 8 9 9 10 10 11 10 12 11 13 12 14 12 15 13 16 14 17 14 18 15 19 16 20 16 21 17

Acquisition[edit]

Consider using a skill that increases attack speed, such as Flurry, to interrupt more often.
This skill synergizes well with attack skills that can hit multiple foes (e.g. Barrage or Whirlwind Attack) or scythes.