Death Knight Tanking and Spec

So I have my Death Knight up to level 72 and decided to try tanking. After much reading on all kinds of forums to find the best spec, I have come up with my own for now. I am tanking some Northrend Dungeons so I am not raiding or doing heroics ( naturally as I am 72 at the time of this post).

 

This spec is revolved around survivability and making it easier on my healer ( I know what it is like to try to heal a crappy tank). I would love to be able to get the 6% stamina increase in the blood tree ( 23 points into the Blood tree) but I did not want to sacrifice the added 6 seconds to IceBound Fortitude and Unbreakable Armor. As you can see, being level 72 ( and a casual dungeon runner) I do not have the best defense gear ( unbuffed hit points are about 14.5K, armor is about 16.5k, dodge is about 15% and parry is about 15%. This is of course in frost presence ).

 

I added the 6 points in blood for Bladed Armor ( 5pt) and Rune Tap ( 1pt) just to make questing and grinding easier. I think they are a waste otherwise ( for tanking) although I am not sure.

 

It appears that the Death Knight builds and holds agro by DPSing, and not so much by “Threat buttons”, although Rune Strike and Death and Decay are very, very helpful. Also Death Grip and Dark Command are pretty useful.