Just commented in another thread... -38% Mastery... Got 3 shot by Lord Kaz basic attacks with no debuff.
[edit] many are saying that it doesnt actually cause any tanking issue thats its just a visual typo.... if that is so I cannot figure out why I was getting 3 shot by Kaz. No debuff, Armor repaired, Correct spec, demon spikes up... every hit was 200k+.... frustrating