Piru, the Volatile is a rare Legendary Creature — Elder Dragon card from Modern Horizons 2 (MH2), collector number 422. Current market price: $0.27 (foil $0.38), TCGplayer market prices via Scryfall.
Flying, lifelink At the beginning of your upkeep, sacrifice Piru unless you pay {R}{W}{B}. When Piru dies, it deals 7 damage to each nonlegendary creature.