I use the same 0/0/25/25/20 build as Juno. I usually use Staff / Scepter + Focus. Against a solo mob, I’ll call with Sceptre 3 (Confusion stream), use pWarden when he closes in, switch to staff, hit Staff 5 (Chaos Storm), then Staff 3 (pMage).
Confusing Images is great, because it does a stream of damage initially, but then lays out a lot of damage as the mob attacks. Also, there’s a trait that gives confusion 33% extra duration, and this makes it hit twice for full damage usually.
Alternately, I’ll call with staff 1, as they close hit staff 5 (Chaos Storm), get in the storm, pop out with staff 2 (giving me Chaos Armor), optionally call pMage with Staff 3. I can sit and tank a little bit by popping staff 4 (Chaos Armor), but most of the time the mobs are dead at this point.