Prosper, Tome-Bound [Dungeons & Dragons: Adventures in the Forgotten Realms Commander] Serra A deck can have any

A deck can have any number of cards named Relentless Rats

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

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

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

Prosper, Tome-Bound [Dungeons & Dragons: Adventures in the Forgotten Realms Commander] Serra A deck can have anySet: 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.