Well did the new LFR this week, right away got put in 2/3, so i take it. My god this is the most PUG unfriendly boss there is, I forsee nerfs soon. Its not a difficult fight in theory but everyone has to actually work together.
This is how the fight goes. Boss Fixates on a person that needs to kite it around, while tanks stay in front to soak the cleave or it gets stacks of frenzy buff. While Dps needs to kill each leg that -3% of it Hp each time a leg dies (He heals them every once in a while), but be careful not to walk under it or it does a Crush move that damages the whole raid for about 125k. and One person in the raid gets a pheromone debuff that makes him pulse slow dmg(stack at 5k a tick, then like 7,10,15,20,25 etc.) to the raid and drop puddles that slow and dmg you if you walk on them, and this debuff starts stacking putting a debuff on the entire raid for extra dmg. You pass this debuff to someone by going near them that reset it, and pass the pheromone debuff to them.
How many things can go wrong, Well griefers will stand under him so he constantly crushes, or people just dont pay attention. Someone gets the pheromone and puts puddles everywhere, or stands in dps and it bounces everywhere. tanks dont stack or fixated person acts like an idiot and frenzy stacks to no end. Ohh yeah and if the person with the pheromone isn't careful and dies, the debuff just keeps stacking indefinitely on his body.
Its a Pug killer, as for the other 2 bosses i have no clue I qued for LFR on Heart of Darkness for 2 Hours canceling any 2/3 ones that popped and I never saw a fresh one. The worst part is you find a decent group that listens and seems to understand, but make 1 or 2 mistakes on the first attempt and wipe, then half leave so you explain to the new ones and they make mistakes and the other old half leaves so your constantly trying to explain, and people are making beginner mistakes then leaving. It's a Bitter cycle. The lowest i got it was 65%
Its not hard you just need cordination, which in LFR is like asking for world peace. I'm guessing Blizz is going to have to nerf it.