Mobile Armory

Whenever one or more +1/+1 counters are
placed on another creature you control, put
your choice of a first strike, lifelink, or
vigilance counter on that creature.
Sacrifice Mobile Armory: Put a shield counter
on target creature.
Channel - {w}, Discard Mobile Armory: Put your
choice of a first strike, lifelink, or vigilance
counter on target creature.