Metalkite Arcanus

Whenever a permanent you control becomes an artifact creature, you get {e} (an energy counter).
Pay any amount of {e}, {t}: Cast an artifact permanent from you hand with converted mana cost equal to the number of {e} paid.
"Observe the change. Create the construct. Observe
the change. Create the construct. Observe the change. Create the construct. Observe the change. Create the construct. Observe th-... anomaly detected."