Olaf Ability (LoL): Undertow

Olaf throws an axe, dealing 60 / 110 / 160 / 210 / 260 (+1.0 per bonus attack damage) physical damage and slowing by 25 / 30 / 35 / 40 / 45% for 1.5-2.5 seconds (depending on distance travelled). Champions hit lose 20 / 22.5 / 25 / 27.5 / 30% of their armor for 4 seconds. This ability deals 10 / 25 / 40 / 55 / 70 physical damage towards monsters.

If Olaf picks up the axe, this ability's cooldown is refunded.