For all those that are going to do the Xyor fight, know that it has changed. You have to get Phogoth's health down or the drop ships don't spawn. Doesn't seem to have as many adds as before either.. Syvel even got bored at one point. The knight wave was the hardest and it seemed like Xyor was harder to kill. First ship spawned at less than 3/4 health. Second less than 1/2 health, and third about an 1/8th of health. He was so low we just went ahead and killed him after killing Xyor.