Armory Amplifier

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)
Armory Amplifier has first strike if it's being crewed by a creature with first strike. The same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.
"A strict upgrade to any soldier."