Rextroy has uploaded a new video to his YouTube channel where he one-shots everything in sight with his Death Knight while naked!
There was a bug with Death Knight’s 
Cryogenic Chamber, which stacks 15% of the damage from 
Frost Fever to be unleashed by the next 
Remorseless Winter. This bug gets a big damage boost when hitting low-level targets, like training dummies. The training dummies in Durotar stick around long enough for Frost Fever to tick once, letting you stack the buff and unleash it on your target. The buff won’t survive through loading screens, so getting it to the Dragon Isles is tricky, but not impossible.
Rextroy attempted to stack the buff using an old strategy with 
Mind Control and 
Ray of Hope on critters, resulting in Remorseless Winter dealing 20 million damage. However, it couldn’t reduce the event version of Fyrakk below 1 health.
Rextroy spent most of his testing time in Durotar, seeing if Horde players would attack an apparently naked AFK Death Knight, and there were many!