Illusion/Storm !!!
It is so good that, out of my 100+ alts, I can't find another that has even a chance of being as much fun to solo and team as my (now) T4 Incarnated Illusion/Storm.
As other people have said, this toon is about riding the chaos. It is a powerset combination that rewards adaptable play and tactics, not just 1-2-3-1-2-3 button mashing.