I've Gone and Made a Mess (25 player)

Source
is the fourth boss in Icecrown Citadel.

Strategy
The key element of getting this is that his attacks and his adds generate blood power, anything that makes saurfang not successfully damage the tank ensures no blood power gained, the blood beasts must be kited as they also generate blood power on a successful attack, players must spread out because of blood novas mechanic. When the tank is hit with rune of blood the offtank must taunt him for the duration so the main tanks health is not leeched and saurfangs health does not refill, the last thing to watch out for is his frenzy as it increases his attack speed meaning he hits faster thus making him generate alot of blood power.