RX-78-2

{1}, {t}: Draw two cards, then discard a card.
Create a 1/1 colorless Pilot creature token with
"This creature crews Vehicles as though its power
were 2 greater."
Crew 8 (Tap any number of creatures you control
with total power 8 or more: This Vehicle becomes an artifact creature until end of turn.)
RX-78-2 can be your commander.