Fluros of Myra's Marvels (Galaxy Foil) [Unfinity]

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.

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