Rakitan, Rakdos Incarnate

Flying, unleash, haste
As long as you have no cards in your hand and control three or more creatures, creatures you control get +4/+0.
Eminence -- As long as Rakitan is in the command zone or on the battlefield, black creatures you control have haste, red creatures you control have flying, red and black creatures you control have unleash, and creatures you conrol with the Rakdos signet on them cost {b/r}{1} less to cast.
Rakdos doesn't stop at riots.