Magneto, Heart of Arakko

+1: create a 0/1 Scrap Golem token with Defender and "This creature gets +1/+1 for each scrap golem you control".
-3: Reveal the top card of your library, if it is an artifact you may cast it without paying its mana cost.
-8: You get an Emblem that says, "If an opponent would draw a card, anytime other than on their upkeep you gain control of the drawn card".