Katerina of Myra's Marvels is a rare Legendary Creature — Human Performer card from Unfinity (UNF), collector number 302. Current market price: — (foil $0.42), TCGplayer market prices via Scryfall.
As Katerina of Myra's Marvels enters, choose a letter. Whenever you cast a spell whose name begins with the chosen letter, create a white 2/2 Cat creature token with flying. Partner (You can have two commanders if they both have partner.)