Kalista Ability (LoL): Rend

Passive: Kalista's spears linger in their target for 4 seconds, stacking any number of times.

Active: Kalista rips the spears from nearby enemies, dealing 10 / 20 / 30 / 40 / 50 (+20% of ability power) (+0.7 per attack damage) physical damage plus 7 / 14 / 21 / 28 / 35 (+20% of ability power) (+0.2 / 0.25 / 0.3 / 0.35 / 0.4% per attack damage) attack damage as physical damage per spear beyond the first. Slows enemies hit by 10 / 18 / 26 / 34 / 42% (+5% per 100 ability power) for 2 seconds.

If this ability kills at least one target, its cooldown is refreshed and it refunds 10 / 15 / 20 / 25 / 30 mana.