Mardu Ascendancy [Khans of Tarkir]

Set: Khans of Tarkir Type: Enchantment Rare Cost: {R}{W}{B} Whenever a nontoken creature you control attacks, create a 1/1 red Goblin creature token that's tapped and attacking. Sacrifice Mardu Ascendancy: Creatures you control get +0/+3 until end of turn.