Butterfly gains 2 stacks of Assassin Mark from killing heroes and 1 stack from assist or killing creeps/jungle creeps. At 3 stacks, the next skill used will not have any cooldown.

Butterfly deals 200 (+60% of AD) physical damage to nearby enemies (25% more damage for each enemy hit). She also gains a shield that absorbs 400 (+120% of AD) damage for 2s and grants a 60% speed boost which diminishes to 0% over 2s.

Butterfly attacks the enemies in front of her, dealing 200 (+60% of AD) physical damage to enemies in its path. The first enemy hit takes 1.5x damage and is slowed by 50% for 1.5 seconds.

Hitting an enemy gives her 1 stack of a buff, which increases her attack speed by 30% and crit rate by 10% for 5 seconds and can stack up to 2 times.

Butterfly jumps at a target enemy, dealing 350 (+115% of AD) physical damage (if the target is marked, deals additional true damage equal to 12% of lost HP) and marking them for 3 seconds. For 3 seconds after hitting the target, she takes 50% less damage from all normal attacks.

While the mark is in effect, Butterfly restores HP equal to 35% of damage dealt to the target. If the target dies, it will immediately reset her ultimate's cooldown.

Hitting marked targets with normal attacks will also reduce the cooldown time of skill 1 and 2 by 1 second.