We just got him 1h ago 10man. We had to lend our guilds other teams spriest(gm with legendary) to get him down. 1pala tank, 3 healers, of them being a smite priest, and then ofc 6 dps.
We had the most struggle on having all 10 players alive in p2 and not wasting a CR, as our tank really needed it for the big adds in p2. And the dps required for the whole fight is really high. Unless you got really pro healers and 2 tanks and can outheal it.
Overall a fun fight. But really fustrating wiping in p2 or 4th platform as it takes 8mins to get to that point.