Battlefield Geist

Whenever Battlefield Geist or one or more other
Soldiers enter the battlefield under your control,
Battlefield Geist gets +1/+0 until end of turn.
Then, tap up to one target untapped creature an
opponent controls with power less than
Battlefield Geist's power.
Even as a faded memory, the Midnight Legion can
gain form to fight where injustice reigns.