Mirad lo que he encontrado en la página de Wowiki sobre Patchwerk:
Notes
His name comes from the term "patchwork"; as an Abomination, he is a disgusting amalgamation of flesh, bones, meat, metal, and threads.
The Avatar of War refers to the Everquest boss of the same name. The boss had a similar ability to Hateful Strike in that it would unleash massive damage to the tank which would have to be healed through. It was widely believed at the time that no player could possibly tank that.
Unlike a number of other bosses in the WotLK version of Naxx, Patchwerk's adds WILL engage if you try to pull him without clearing his room first.