PIonian Fervor
Irelia gains a stack for 6 seconds when she hits an enemy with an Ability (max 4). She gains 10(10–25 (Lv1–18))% Attack Speed per stack, and at max stacks her Attacks deal an additional (Lv1–20: 13–70 + 20% Bonus attack damage) magic damage.
Attacking a champion, structure, or large monster refreshes the duration of the stacks. Irelia gains a stack for each champion hit, or if she hits at least one non-champion enemy.
Deals 50% damage to structures.
