Drown in the Loch is a rare Instant card from Secret Lair Drop (SLD), collector number 270. Current market price: $9.60 (foil $10.57), TCGplayer market prices via Scryfall.
Choose one — • Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard. • Destroy target creature with mana value less than or equal to the number of cards in its controller's graveyard.