Vrondiss, Rage of Ancients is a mythic Legendary Creature — Dragon Barbarian card from Forgotten Realms Commander (AFC), collector number 328. Current market price: $2.76, TCGplayer market prices via Scryfall.
Enrage — Whenever Vrondiss is dealt damage, you may create a 5/4 red and green Dragon Spirit creature token with "When this token deals damage, sacrifice it." Whenever you roll one or more dice, you may have Vrondiss deal 1 damage to itself.