Cephalid Illusionist is a uncommon Creature — Octopus Wizard card from Torment (TOR), collector number 28. Current market price: $1.17 (foil $43.59), TCGplayer market prices via Scryfall.
Whenever this creature becomes the target of a spell or ability, mill three cards. {2}{U}, {T}: Prevent all combat damage that would be dealt to and dealt by target creature you control this turn.