Yahenni, Undying Partisan [Aether Revolt] Ravnica Allegiance Promos you may cast the exiled

you may cast the exiled card without paying its mana cost if that spell's mana value is 4 or less

Augment {3}{W} ({3}{W}

Set: 30th Anniversary Promos Type: Legendary Creature — Dragon Wizard Rarity: Rare Cost: {2}{U}{U}{R}{R} Flying

Set: Welcome Deck 2016 Type: Instant Rarity: Common Cost: {1}{U} Return target nonland permanent to its owner's hand

Set: Neo Genesis 1st Edition Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Yahenni, Undying Partisan [Aether Revolt] Ravnica Allegiance Promos you may cast the exiledSet: Aether Revolt Type: Legendary Creature Aetherborn Vampire Rarity: Rare Cost: {2}{B} Haste Whenever a creature an opponent controls dies, put a +1 +1 counter on Yahenni, Undying Partisan. Sacrifice another creature: Yahenni gains indestructible until end of turn. "The time for subtlety is over, darling."