Is there any formula/strat to maximizing it's effective? Or is it completely random?
My regular rotation doesn't utilize it the majority of the time, but I'll toss it in at the tail end of a long grinding chain or maybe in a fight against a boss character but I've found that the healing effect is completely random. I've tried after applying my set rotation diseases (Plague Strike, Icy Touch, Blood Strike), I've tried after only doing Plauge Strike only, and I've had times when I've went from like 50% health to 53% and other instances that I've gone from 30% health back up to 80%.
Is there a formula for this? Or it completely random like getting critical hits?