Riot Ringleader 
Creature — Human Warrior
Whenever this creature attacks, Human creatures you control get +1/+0 until end of turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Human Warrior
Whenever this creature attacks, Human creatures you control get +1/+0 until end of turn.