There's plenty of discussion of good DK specs. Search and read before posting.
I am looking for a spec that minimizes incoming Spelldmg on my DK
(I only tank Spelldmg heavy encounters in 25man Ulduar).
So i tried a spec with Magic Suppression, Anti-Magic Zone and Spell Deflection.
Acclimation is too deep in Frost to get any other good Anti-Spell Skill and also too unrealiable(max. 30% proc chance)