Originally Posted by The Blue Jelly
You also have the fact that if they fail to burst you, they're now on cooldown in their squishy bodies with no damage left... So maybe if you.... Fight back?
Oh and to the dumbass far above, Kass stomps most mages because his kit is designed to fight magic mages. Put him against something that isn't a magic mage, there you go. Especially a Ranged AD Carry.
What about diana? Shes far from squishy yet her damage output is pretty strong. Not only that, all of them have mobility and an escape, take leblanc or kass for an example
Also most mages have relatively long cds but ap assasins are more for burst damage, so it isnt a big issue.