Gunman - Gurren

When Gunman - Gurren enters the battlefield,
you get {e}{e} (two energy counters).
Whenever Gunman - Gurren attacks, you may
pay {e}. If you do, it gets +1/+1 and gains
trample until end of turn.
Crew Pilot 2 (Tap any number of Pilots you control
with total power 2 or greater: This Vehicle becomes an
artifact creature until end of turn.)