Way of Dark
Restitution - Resurrect and restore max health to everyone on the battlefield (friend and foe).
Cast Time: 2 seconds
Cooldown: 20 seconds
If things go badly for your side, there's always Restitution. You'll give a fresh start to you and your allies, though your opponents will be fully healed as well. Be warned, if the battle is going too badly, they will begin to catch on to you. Make sure you have a surprise waiting for them when they come. A good choice for a secondary ability might be Earth's Legacy or an icy projectile.
Leads to: Spiritmonger or Lich