Arcane Eruption

Drag the head of the flail against the ground causing an eruption of arcane energy in front of the player, dealing 120% weapon damage and inflicting two stacks of Impairment for 6s to all targets hit. Automatically follow up with an additional melee attack that deals 150% weapon damage. Impairment deals 10% weapon damage per second and inflicts weaken, reducing their base damage by 10%. (Max 3 stacks.)