Assemble Infinity

Artifact cards you cast cost {4} less to cast.
Whenever an artifact enters the battlefield under your control you get {e} (an energy counter).
Pay {e}{e}{e}{e}{e}{e}{e}{e}: Search your library for an artifact card and put it onto the battlefield. Assemble infinity deals damage to you equal to that card's converted mana cost. It gains haste. Sacrifice it at the beginning of your next end step.