Proud Mentor is a uncommon Creature — Human Warrior card from Battlebond (BBD), collector number 20. Current market price: $0.13 (foil $0.32), TCGplayer market prices via Scryfall.
Partner with Impetuous Protege (When this creature enters, target player may put Impetuous Protege into their hand from their library, then shuffle.) {W}, {T}: Tap target creature.