Snapping out and killing assists

what are some techniques that work when snapping out people and leaving their assist on screen. this is one thing i dont do much with anybody, but wanna know what will work to keep the assist on screen. multiple infernos? i dont think his launch will do the trick… but then again… thats why im on here asking.

BH can do multiple inferno XX HOD on assists - eg commando hits say magneto and psylocke - killing magneto, inferno XX HOD won’t cause flying screen so you can do it agian as long as you have meter.