Overseer of the Five Suns

Other Myr Creatures you control get +1/+1.
{x}: Create X 1/1 colorless Myr artifact creatures.
Whenever a artifact enters the battlefield under
your control you get {e} (one energy counter).
Pay {e}{e}{e}{e}{e}: Add {w}{u}{b}{r}{g} you may use
this instead of the casting cost of a spell you cast
this turn.