Cephalid Facetaker is a rare Creature — Octopus Rogue card from New Capenna Commander (NCC), collector number 124. Current market price: $6.70, TCGplayer market prices via Scryfall.
This creature can't be blocked. At the beginning of combat on your turn, you may have this creature become a copy of another target creature until end of turn, except it's 1/4 and has "This creature can't be blocked."