Dan and Paul do a deep dive on the "Magic Jar" spell that's been in every edition of D&D to date. First edition said, "Magic jar is a very unusual spell" and gave it a completely unique school of magic. Put your soul in an object and you can possess any other creature's body you desire. Total safety from destruction, right? But detail vary wildly by edition: Should it be eternal duration, or more limited? Infinite range, or something less? And how will it reshape the tone of your whole campaign?

Read Dan's blog on Spells Through the Ages: Magic Jar