While adorably retro, they never caught on
Theyre even banned in Pioneer, and are the basis of the majority of land bases in Modern, Legacy, and even Vintage
As usual, this all started with the sets Debut Livestream, in which Wizards unveiled a boatload of new cards
Example some Uncommon cards were printed 4x on each Uncommon sheet, like Oasis
If you do, create a token that's a copy of that creature, except it's a Spirit in addition to its other types and it has "When this token leaves the battlefield, return the exiled card to its owner's graveyard." Whenever another nontoken creature you control dies, exile it
I don't get why I would want to do that to get me to a win