My best experience as a player was playing the scenario of Alien (the movie) in a setting without alien... surprising, until we found the eggs (and it clicked ) and we all died soon after.. My guess: it work with any horror movie transposed into any normal setting.
As a GM the most fun I saw my player have, is letting them save the life of a godlike figure (Elric of Melnibonée in the game of the same name) when they were newbs with 2 adventure on their belt.
And they wielded the most powerful (and dangerous ) weapon of the world for a few round of combat.. it make their day... until it corrupted one of them
It worked.. because Elric is nothing without his weapon, I dont see it happening with Elminster.
Have good fun in your new city