Recruit the Worthy is a common Instant card from Modern Horizons (MH1), collector number 22. Current market price: $0.20 (foil $0.30), TCGplayer market prices via Scryfall.
Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.) Create a 1/1 white Soldier creature token.