Scriv, the Obligator is a mythic Legendary Creature — Inkling Bird card from Secrets of Strixhaven Commander (SOC), collector number 9. Current market price: $0.60 (foil $0.40), TCGplayer market prices via Scryfall.
Flying, deathtouch Whenever Scriv enters or attacks, create a white Aura enchantment token named Contract attached to target creature an opponent controls. The token has enchant creature and "Whenever enchanted creature attacks, it gets +2/+0 until end of turn if it's attacking one of your opponents. Otherwise, its controller loses 2 life."