I was surprised at how often I’ve done Blood Death Knight tanking in the past while running quests, or soloing content for that matter. I never had the gear for it, and still managed to survive quite well. Things took longer to die, but so did I. This is what is known as a Good Thing. Outliving things you’re trying to stab to death is always a better result than the other way around.

Preach discusses the Blood DK for patch 5.4, and you’d do well to listen to him. So listen! Also, watch!