The kids I DM for cleared out a castle full of devils who had invaded Hades. I rolled up treasure for them and got, among other things, “some minor magical trinket,” so I figured that two Barbs of the Black Gate would be an appropriate reward. I described two twisted iron spikes which the cleric of Hades recognized from his appearance before the Black Gates the last time he died.
The fighter then decided to see what one did by hammering it into his own skull.
I spent what must have been a good five minutes staring at this kid in disbelief and asking him if he was sure he wanted to do this. He was 100% sure. I asked the other kids if they wanted to interfere. They were sure they didn’t.
“Okay,” I said. “You die.”
“I heal him,” said the cleric.
“You can’t,” I said, explaining the effects of the Barb.
“Okay, I resurrect him,” said the cleric.
“You can’t do that either. He’s just dead. No ghost, no undead, no resurrection, nothing.”
They are now hauling his corpse in a cart to Hades’s citadel so that Hades himself can bring him back to life in exchange for information.