Thats a real shame, because this 2-color deck is padded out with the usual Evolving Wilds/Terramorphic Expanse, which are just so unnecessary and couldve easily been a Hedge Maze or something similar (surveil even plays into the manifest theme!)
Crucially, his 'Mirror Box' effect also prevents them all dying to the legend rule
When a high-grade Unlimited is worth more than a low-grade 1st Edition A point often overlooked by beginners: an Unlimited PSA 10 copy can be worth more than a 1st Edition PSA 7 for certain cards
Prosperous Innkeeper is also pretty solid once we get Skeletal Swarming or Death-Priest of Myrkul on the battlefield, giving us a source of incidental lifegain as our Skeleton tokens enter the battlefield, which is especially strong against aggro
She also allows you to proliferate at the beginning of your end step, which makes her an excellent Commander for Planeswalker decks, infect decks, +1/+1 counter decks, or even weird group hug variants
On EDHREC, there are already 457 submitted decks for the guy - that's more than any version of Gandalf or Frodo has gotten