Underworld Breach [Theros Beyond Death Prerelease Promos] Plant using their libraries as their

using their libraries as their decks

you may exile a black card from your hand rather than pay this spell's mana cost

Activate only if you control a Plains

Set: Future Sight Type: Legendary Artifact Rarity: Rare Cost: {7} Creatures you control have flying

Underworld Breach [Theros Beyond Death Prerelease Promos] Plant using their libraries as theirSet: Theros Beyond Death Prerelease Promos Type: Enchantment Rarity: Rare Cost: {1}{R} Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.) At the beginning of the end step, sacrifice Underworld Breach.