Yahenni's Expertise
Sorcery (CMC 4)
All creatures get -3/-3 until end of turn.
You may cast a spell with mana value 3 or less from your hand without paying its mana cost.
Decks with Yahenni's Expertise
[AER] Aether Revolt #75 (R)
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[PAER] Aether Revolt Promos #75s (R)
[PAER] Aether Revolt Promos #75 (R)
[KLR] Kaladesh Remastered #112 (R)
[PRM] Magic Online Promos #62989 (R)