The Lost Prison of Eternity is our newest DMs Guild product. An adventure spawned after reading about the dearth of high level 5e adventures. The Lost Prison was written from the ground up with high level concepts at its base and should stretch even the cleverest spellcaster’s utility belts.
Its PWYW on the DMs guild, and We’d love to see some reviews or comments. Especially from folks who have run it.
Update 12/18/2021, featured in a video by Splinterverse