Llawan, Cephalid Empress is a rare Legendary Creature — Octopus Noble card from Secret Lair Drop (SLD), collector number 1277. Current market price: $2.46 (foil $2.86), TCGplayer market prices via Scryfall.
When Llawan enters, return all blue creatures your opponents control to their owners' hands. Your opponents can't cast blue creature spells.