Mirrorshell Crab is a common Artifact Creature — Crab card from Kamigawa: Neon Dynasty (NEO), collector number 63. Current market price: $0.30 (foil $0.36), TCGplayer market prices via Scryfall.
Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.) Channel — {2}{U}, Discard this card: Counter target spell or ability unless its controller pays {3}.