Jareth, the Goblin King

{2}{r/g}{r/g}: Goblin creatures you control get +1/+0 and have menace until end of turn.
{4}{b/r}, Sacrifice a Goblin: Jareth, the Goblin King deals 5 damage to target creature or player.
{3}{r/w}{r/w}, {t}: Gain control of target creature of an opponent's choice he or she controls for as long as you control Jareth, the Goblin King. It becomes a Goblin in addition to its other types.