Unassuming Sage is a common Creature — Human Peasant Wizard card from Wilds of Eldraine (WOE), collector number 37. Current market price: $0.09 (foil $0.25), TCGplayer market prices via Scryfall.
When this creature enters, you may pay {2}. If you do, create a Sorcerer Role token attached to it. (Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.")