Acclaimed Contender is a rare Creature — Human Knight card from March of the Machine Commander (MOC), collector number 166. Current market price: $0.38, TCGplayer market prices via Scryfall.
When this creature enters, if you control another Knight, look at the top five cards of your library. You may reveal a Knight, Aura, Equipment, or legendary artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.