I won the roll, but people started to say I ninja'ed it. Guess what? On the second pyro.the pattern drop. Just as my raid group passed on those pyro and started to pull the spiders, I pull and killed the pyromancers myself.
Since I know where the pattern will drop, I made sure that I kill all those pyro before the spiders' room. Comment by ThottbotTwo days ago I posted the previous comment, and I started to run LBRS yesterday and today.