wheel cards mtg of Fortune - Custom Proxy Commander Card instead that card is revealed and put on the bottom of that player’s library. Wheel of Fate MTG -

Qarsi High Priest A repeatable manifest effect attached to a creature sacrifice has a lot of potential

Im not going to parse out the best or worst ones here, but they all kind of fit the description

Plus, they have a lot of high-ceiling cards in Biolume Egg, Soulcipher Board, Whispering Wizard and Stormchaser Drake any of which will randomly win games in their respective archetypes

No restrictions were placed on future cards printed at lower rarities

Galazeth Prismari takes Treasures (and other artifacts) a step further by letting them act as permanent mana rocks for instants and sorceries, both of which receive a lot of support from cards in the Izzet card pool

Decklist: 1 Urza, Chief Artificer