Dont get me started on Machine Gods Effigy copying a Spark Double while having Court of Vantress or Extravagant Replication out
While Magic and other card games have some humor on their cards, they usually arent as overtly funny as a lot of the cards from The Spoils were
In many cases, this refunds the full cost of the spell or more, and against mana rocks, it often generates a tempo swing
Bazaar of Baghdad The Bazaar is a triple threat for never printing again, and it would have to overcome all three to see print again, even if the Reserve List were done away with
I don't think this will end up being a popular sweeper as it's a bit more niche, but some decks that intentionally are making tokens for players like Grismold, the Dreadsower can use this as a contingency plan that will likely smack someone for a lot of extra damage
The best "polymorph" is Proteus Staf, which is repeatable and can be used to tuck opposing commanders