Aetherwork Invention

When Aetherwork Invention enters the battlefield, you gain {e}{e} (two energy) and you
may exile an instant or sorcery card from your
hand.
{e}{e}, {t}: You may copy a card exiled by
Aetherwork Invention. If you do, you may cast
the copy (you may only cast it if you could normally
do so and must pay any associated costs).
Invention is the act of making one's will manifest in material.