I think the totem of hex is the best because it's bringing 150 sp to 2 spells that we use instead of 200 to lavaburst which Is nice but it has a CD so u don't get the benifit as u would from multiple chain l and lb..

But with the extra sp to the lavaburst you do a little more damage to maybe put that annoying priest with shields over the edge from 90%-dead instead of 90%-10% then like crazy op heal shield then fear lol.. It's really what u need more for. If u ever do pve go for the hex because the helps with mobs (chainlightning) adding more damage to that aoe stuff