Vengeful Rebel is a uncommon Creature — Aetherborn Warrior card from Aether Revolt (AER), collector number 73. Current market price: $0.09 (foil $0.36), TCGplayer market prices via Scryfall.
Revolt — When this creature enters, if a permanent left the battlefield under your control this turn, target creature an opponent controls gets -3/-3 until end of turn.