I usually play melee style, but I just TR into a multi caster so I am wondering how all those energy drain spells really work against orange, red and purple bosses. Are they useless because bosses are immune to them or have too high spell resistance? I realize that CC is great vs trashes, so is it only pure damage spells against bosses that matter? I don't plan on soloing a raid anytime soon, lol, but I like to test my build on solo elite just to find its strengths and weaknesses. And yeah I happen to die a lot, thankfully I don't play permadeath, lol.