K-9, Mark I is a rare Legendary Artifact Creature — Robot Dog card from Doctor Who (WHO), collector number 537. Current market price: $4.73 (foil $4.78), TCGplayer market prices via Scryfall.
Negative — As long as K-9 is untapped, other legendary creatures you control have ward {1}. Affirmative — {1}{U}, {T}: Target legendary creature can't be blocked this turn. Doctor's companion (You can have two commanders if the other is the Doctor.)