Steadfast Sentry 
Creature — Human Soldier
Vigilance (Attacking doesn't cause this creature to tap.) When this creature dies, put a +1/+1 counter on target creature you control.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL