Night Terrors can be a decent card to bring in if the opponent has some unbeatable bomb, but I think taking the curve filler makes sense here: Walking Corpse.
I guess the pick is between the two crappy removal spells, Ghostly Possession and Corpse Lunge. I'll go with the one that doesn't give the opponent an immortal blocker.
Slayer is really good. I would say we were leaning more towards white as a main color going into this pack, and this pretty much cements it. Our white is much better than our blue.