The title pretty much says it all. I'm the raidleader for a guild that is progressing 10m normal ToT. We killed Dark Animus on sunday and is going to go for Iron Qon tonight, so after that it's time for Twins and i have been studying tactics for it and trying to learn the patterns of the Celestial as much as possible so i can do them for us, but i'm wondering if they are needed or if their just a waste of time? And if you want to use them, is it some that is more important than the others?