Shaman's Perspective
This is not a very common setup these days, which is good! But your Rogue will go on the Shadow Priest, when you're interrupting the Mage's sheeps etc. Kite around pillar as well, so they don't catch up to you. Keep Tremor Totem and Frost Resistance totem down all the time. Save Grounding for a Mind Blast or Shatter combo. Use Heroism when the Mage cannot afford to Spell Steal and the Priest is under heavy attack. Purge the Priest's shields as well as the Icy Veins. If they're going for you, use Heroism rather quickly to supply the Rogue's damage and if it doesn't get removed it's easy to throw a heal or two.

Totems Used: Grounding, Tremor, Frost Resist, and Searing fire.