Patron of the Akki [Betrayers of Kamigawa]

Set: Betrayers of Kamigawa Type: Legendary Creature — Spirit Rare Cost: {4}{R}{R} Goblin offering (You may cast this card any time you could cast an instant by sacrificing a Goblin and paying the difference in mana costs between this and the sacrificed Goblin. Mana cost includes color.) Whenever Patron of the Akki attacks, creatures you control get +2/+0 until end of turn.