Ay burst would be through the roof although just be sure that the person you are about to do it on doesn't have time or ability to react to an incoming PoM Pyro. other than that, the ability for your main to escape and your clones to heal might come in very handy indeed.

Personally I would go for a frostmage/ele shammies for the added control and reproducible freeze +FB+Icelance combo.. combine that with Lightning bolts and ouch!!

may have a hard time vs drain teams/CC teams.. especially if they focus on your shammies