Tezzeret, Betrayer of Flesh - 376 M NEO

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."

mythic
Legendary Planeswalker — Tezzeret
From the Magic: The Gathering set Kamigawa: Neon Dynasty.