Chronostatic Preservation (Mage) - Fuse fire, arcane, and frost magic together for a massive heal.
Trap Launcher (Hunter) - Drop traps up to 40 yards away, in or out of combat.
Maelstrom Weapon (Shaman) - Use melee attacks to make healing and damage spells instant-cast.
Dispersion (Priest) - Avoid damage and movement-impairing effects.