Messiah already covered his abilities, so I'm skipping those, you can read his guide to ICC-Lower Spire if you aren't familiar with them. The keys to this fight are about 2 things:
This creates a path down which the blood beasts can be directed, slowed, snared and killed before they reach the dps, thus allowing them to generate no BP from hitting people. Ranged DPS (resto shamans, dust off your frost shock too) should be using abilities that slow or snare targets to keep them controled. We also learned that immobilization abilities for the most part do not work (eg freezing trap) To make it easier to get them out of the melee, have all melee and tanks avoid using aoe abilities before the blood beasts spawn. Sadly, we goofed and when that person died, he was battle rezzed and died again. What we learned is that shields/absorbs, even partial absorbs, seem to block him from gaining Blood Power. Our last attempt went really well, except he cast his one Mark on one of our tanks at the same time that he went into his 30% frenzy; everything fell apart right there.
The idea is to ensure that raid members stay at least 12 yards from each other to avoid multiple people taking blood novas and generating more blood points. While healers are good candidates to draw blood beast aggro, any raid members (other than tanks/melee) that will draw considerable aggro on the blood beasts should be at the end of the frost/kite area, with remaining healers and ranged dps forming a semi-circle behind the melee/tanks.
Quick tank switching is also a must. The longer he beats on a tank with Rune of Blood, the longer the fight as he will be healing himself. Mortal Strike is also good to have for this as well. This week, we were two-healing with a Pally and a different Holy Priest. Unlike last week, this priest was throwing Power Word: Shield on Boiling Blood targets, I threw Sacred Shield on BB targets as well, and we did a better job at maintaining space to minimize Blood Nova. Our best attempt (8+ minutes) ended with Saurfang at 11 percent and enraged. The good news for us is that we only had him cast Mark once.
As far as marks go, unless a healer or tank got the mark, we just let the first DPS to be marked die instantly. Because of the increased BP gain, he will get to a 2nd mark much faster if the marked DPS remains alive. We aimed for about 50% on his health by the first mark, and he almost reached the 2nd mark before he died. Because of the frenzy at 20%, we held of Bloodlust until then, as the race was on at that point.
Related:
http://www.free-articles-distribution.info/?p=149
