Stolen by the Fae
Sorcery
Return target creature with mana value X to its owner's hand. You create X 1/1 blue Faerie creature tokens with flying.
Illustrated by
Throne of Eldraine#348RareEnglishLegality
Rulings
Oct 4, 2019
If a creature on the battlefield has in its mana cost, X is considered to be 0.
Oct 4, 2019
If the target creature is an illegal target by the time Stolen by the Fae tries to resolve, the spell won't resolve. You won't create any Faerie tokens.