Astrotrain, the Triple Changer

{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.)
Astrotrain can be your commander.