A Dreg infusion is really strong if you're running a burnout line, surprisingly enough. +10/+10 and Burnout 2 makes for a pretty crazy Draff, and helps the burnout lady stay alive longer to give more burnout to the floor.
I think the funniest thing in that whole intro where you explained your last run was when you switched off of umbra after having not mentioned a singular umbra thing the whole time.