Prosper, Tome-Bound [Dungeons & Dragons: Adventures in the Forgotten Realms Commander] Serra Set: Black & White: Black

Set: Black & White: Black Star Promos Type: Water Rarity: Promo Retreat cost: Colorless

or card effects

you can Tribute 1 other Fish-Type monster to negate the effect and destroy that card

the curse of the dynasty

Set: XY: Phantom Forces Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

Prosper, Tome-Bound [Dungeons & Dragons: Adventures in the Forgotten Realms Commander] Serra Set: Black & White: BlackSet: Dungeons & Dragons: Adventures in the Forgotten Realms Commander Type: Legendary Creature Tiefling Warlock Rarity: Mythic Cost: {2}{B}{R} Deathtouch Mystic Arcanum At the beginning of your end step, exile the top card of your library. Until the end of your next turn, you may play that card. Pact Boon Whenever you play a card from exile, create a Treasure token.