A small moment that amused me:
So the dwarven cleric failed his Last Breath roll, and given that it was the very first session, I decided to have a bit of mercy and decided to have him come back, only his heart wasn’t beating, he wasn’t breathing, and he was cold to the touch. Y’know, obviously some form of undead.
A bit later they were fighting some skeletons, and one PC was like “Use healing magic! It will hurt them!” There was a bit of questioning whether it actually worked that way in DW, like it does in D&D 3.5, so I turned to the cleric, and asked “I don’t know, DOES healing magic hurt the undead?”
His reply: “Yeah sur…. wait. No. No it doesn’t.”