I am also stuck on Devourer of Souls. I tried both planting my slaves and strafing them when he drops the bomb, as well as just keeping them on follow. Both worked ok. The biggest problem I have is the lazer beam on it's fricken head. I always lose a few [or all] toons to this and eventually just wipe. Part of it is I don't seem to recognize when it's coming. I have both DBM and BigWigs, so I do get the warning messages.

I run a mixed group, tank, healer, 3 ranged dps.

Anyone have any more tips on how to avoid the lazer beam?