So they take out Bloodboil and replace it with pestilence both spells are boring so it can't be for that reason. This is lazy un inspired crap this took me like 2 seconds to come up with hows about we keep blood boil give it a better graphic take out rolling blood or whatever that thing that spreads dot to other targets when you use bb is and combine em and take out pestilence from blood dks and make the spell flavour be something like. Boils the blood of all enemys with in 10 yards causing enemies blood to burst out and infect all targets with any of the Death Knight diseases effecting the target.Its like Blizz does not want classes to be cool or the class design team have 0 imagination. I am not saying my idea is good or will work but it about a million % better than just taking out blood boil and reusing pestilence.