Lord Marrowgar on TankspotSeems like a fairly straightforward encounter:
1) Tanks stack on each other(like Koralon in VoA) because he will hit both the main tank and one thats nearest to him.
2) Shoots out lines of blue fire which need to be avoided.
3) A random raid member gets a spike underneath them, which needs to be dps-ed down otherwise theyll take damage and cant do anything. (prio on healers)
4) Does a whirlwind, in which he chooses a random raid member to whirl towards to. So that person and people that are near him need to move. If you get hit you get a stacking bleed (tanks need to avoid this at all costs).
The raid should be positioned in a semi circle around him so people wouldnt be in the way of the WW and when hes going to the first target everybody hugs the walls. etc. Melee needs to run out of whirlwind 5 secs before its cast.
Seems like a fairly simple fight.