We're trying to beat the Butcher on Inferno, and towards the end of the fight the entire room is on fire at once, so nowhere is safe to stand and we all die.
It's always happened around 25% of his life, but sometimes higher and other times lower.
Does the entire room start on fire based on the Butcher's hp, or based on time?
We're trying to figure out if we need more dps, or hp/fire resist.