Active: Olaf throws an axe in a line to a target location, dealing physical damage and slowing enemies it passes through for between 1.5 and 2.5 seconds, depending on the distance the axe has travelled.
The axe remains at the target location until Undertow is off cooldown. Olaf can pick up the axe to reduce Undertow's cooldown by 4.5 seconds. If the axe would land inside terrain, it will instead stick to the wall.
Abilities with conditional effects are usually composed of multiple debuffs, and ignoring the crowd control debuff will not ignore the conditional effects. For example, Olaf will still have his attack damage reduced by