Death Knight Talent Build: Unholy AoE Tanking

First you pick up some Blade Barrier for mitigation and also spend 2 points in Two-Handed Weapon Specialization to increase your damage, then you move into the Unholy Tree where you will splurge 64 of your points.

AoE Abilities

Morbidity will decrease your death and decay cooldown and increase the damage and healing it does. You pick up Corpse Explosion which causes corpses to explode and damage enemies within 20 yards. Summon Gargoyle can be helpful in emergencies. Desecration will help hold enemies in place. Wandering Plague will have a chance to damage enemies within 8 yards. And Unholy Blight Finishes it off. What more could you ask for? These talents would make a Burning Crusade Warrior cry where their best AoE ability was Thunderclap lol.