Kog'Maw with PBE Bloodraser
I'm only going to be calculating % HP damage, not any other on hit effects. OK.
Kog'Maw with 5.0 A.Speed, W active, and PBE Bloodraser: 30% of MAX HP on hit per second (10% magic, 20% physical)
Ok, doesn't seem to be that bad...
Kog'Maw with 5.0 A.Speed, W active, Runuaan's and PBE Bloodraser: 30% of MAX HP on hit per second to 3 people (10% magic, 20% physical)
3 people... per second... wtf...
Kog'Maw with 5.0 A.Speed, W active, Runuaan's, stacked Guinsoo's, and PBE Bloodraser, attacking for 1.2 seconds (6 attacks):** 54% of MAX HP on hit per 1.2 seconds to 3 PEOPLE** (18% magic, 36% physical).
Seems legit