Daretti, Scrap Savant (commander 2014)

[+2]: Discard up to two cards, then draw that many cards.

[-2]: Sacrifice an artifact. If you do, return target artifact card from your graveyard to the battlefield.

[-10]: You get an emblem with "Whenever an artifact is put into your graveyard from the battlefield, return that card to the battlefield at the beginning of the next end step."