Fix paladin. Only Class in the entire game that cannot...

[Launched]

Maybe if you only pull a single pack. Pull even two packs and the combined damage will interrupt you. And if we're talking about letting your healer have sick AoE deeps you'd want more than 1 pack... and also, I reiterate, I dunno why/how you'd be taking enough damage from 3 mobs to warrant the casting of a 1200 potency heal.

You'd be better off popping one of those cooldown things, allowing both the healer AND yourself to DPS.

You don't get interrupted by cumulative damage. It's based on a percentage of your max hp, a single hit is either above that amount or below, and most trash mobs are below.