Passive:Kog'Maw permanently has bonus attack speed.
Bonus Attack Speed: 15 / 20 / 25 / 30 / 35%
Active: For 6 seconds, Kog'Maw gains bonus attack range, doubles his total attack speed and attack speed cap, also halving his ability cast times.
While Bio-Arcane Barrage is active, Kog'Maw's basic attacks deal 55% ADphysical damage to non-minions, though on-hit effects are still fully applied, and deal 2% (+「 0.75% per 100 AP) 」「 1% per 133.3 AP 」 of target's maximum health bonus magic damage. The damage has a minimum threshold of 15 and is capped at 100 to non-champions.
Active:Kog'Maw spews a ball of ooze in the target direction, dealing magic damage and slowing enemies for 1 second. The ooze lingers for 4 seconds, slowing enemies who stand in the ooze and persisting for an additional 0.25 seconds.