Brineborn Cutthroat [Core Set 2020] Blue Underground River deals 1 damage

Underground River deals 1 damage to you

−8: Search your library for an instant or sorcery card that shares a color with this planeswalker

Set: Core Set 2021 Type: Creature — Elf Assassin Rarity: Uncommon Cost: {3}{B}{G} At the beginning of your end step

Set: Murders at Karlov Manor Type: Sorcery Rarity: Uncommon Cost: {1}{B}{R} Choose one or both —

Set: Mystery Booster Type: Creature — Demon Rarity: Rare Cost: {5}{B}{B} Flying

Brineborn Cutthroat [Core Set 2020] Blue Underground River deals 1 damageSet: Core Set 2020 Type: Creature Merfolk Pirate Rarity: Uncommon Cost: {1}{U} Flash (You may cast this spell any time you could cast an instant.) Whenever you cast a spell during an opponent's turn, put a +1 +1 counter on Brineborn Cutthroat. "I always attack from where their spyglasses can't see."