Grobbulus.As a seasoned Paladin tank, I was able to get Gold but had some difficulties with it. I cleared it a while ago so I don't remember if I was gearing for Mastery back then or Haste. I remember consistently have trouble with the last wave. I looked up some guides and people were saying that you actually have the kite the boss around. That blew my mind. As a tank, when do you ever have to kite a boss around the room?