Sunstrike Legionnaire 
Creature — Human Soldier
This creature doesn't untap during your untap step.
Whenever another creature enters, untap this creature.
: Tap target creature with mana value 3 or less.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL