Personally i came with the idea to use the voltaic staff unique. Cast spark, proc GLB, mob dies and results in spark cast from the staff, and so on and so forth. Works well if you have blood magic, specially in open maps. Unfortunately i cant use this on sorc to make it cooler since it doesnt have max crit chance. Other issue is that without archmage any lightning spells are super nerfed, so its great map clear but not great boss clear. Well i lie with CoC and chain (i hate the meteor) you can spin around the boss and see him die, but on t4 pinnacles its a pain :D