Tezzeret, Betrayer of Flesh

The first activated ability of an artifact you activate each turn costs {2} less to activate.+1: Draw two cards. Then discard two cards unless you discard an artifact card.−2: Target artifact becomes an artifact creature. If it isn't a Vehicle, it has base power and toughness 4/4.−6: You get an emblem with "Whenever an artifact you control becomes tapped, draw a card."