Sleep with the Fishes is a uncommon Enchantment — Aura card from Streets of New Capenna (SNC), collector number 61. Current market price: $0.26 (foil $0.22), TCGplayer market prices via Scryfall.
Enchant creature When this Aura enters, tap enchanted creature and you create a 1/1 blue Fish creature token with "This token can't be blocked." Enchanted creature doesn't untap during its controller's untap step.