Hey there, Denizens of the Tower and Traveler friends!
This is a level 3 adventure in delve format about an ancient mausoleum everyone knew was there but ignored. One day the doors opened and a bunch of undead came out and attacked the populace. The town council hired a small group of brave adventurers who went inside to fix the problem. However, none of them returned after a few days and the council needs to hire someone else.
Deep in the ancient mausoleum, a bygone king of a forgotten realm awaits at his throne, issuing telepathic commands to his undead subjects. The skeleton king made an arcane deal to become immortal. It cannot be killed but the ritual of slumber can send it back to sleep for a couple hundreds of years.