Fluros of Myra's Marvels [Unfinity]

Set: Unfinity Type: Legendary Creature — Merfolk Performer Rarity: Rare Cost: {2}{U}{U} As Fluros of Myra's Marvels enters the battlefield, choose a number greater than 0.Whenever you cast a spell with power, toughness, or loyalty equal to the chosen number, target artifact or creature becomes an artifact creature with base power and toughness X/X, where X is the chosen number.Partner