Skeleton Draft Evasion

The Skeleton War: The infamous war that everyone is automatically drafted into in their afterlife if their gravestone fails to wish them to Rest In Peace. You've just died, and realized you were drafted in a war you didn't want to take part of. The only way to get out of it is to go back up to the Overworld and fix your tombstone before the denizens of the Underworld drag you to the battlefield.