Quote Originally Posted by Smedbox View Post
For my first dungeon run, I used 1h+shield on my Justicar tank. But now I've read that this is useless and a cleric tank should be using a 2h hammer?

What's your opinion on the matter?
You want a shield as a tank. Almost two tiers of your tanking talents revolve around blocking, including Precept of Refuge, which is a massive mitigation talent. You also gain 5% of your mana whenever you block.

Also, don't bother micromanaging Purpose. Just macro it into your generic single target and AoE rotations. You will gain more total mana using it on cooldown than you will saving it until you're low. Mana isn't really an issue as a cleric tank.