Fluros of Myra's Marvels{2}{U}{U}

Legendary Creature — Merfolk Performer

As Fluros of Myra's Marvels enters, 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 until end of turn, where X is the chosen number. Partner