Dack Fayden is a mythic Legendary Planeswalker — Dack card from Eternal Masters (EMA), collector number 199. Current market price: $7.49 (foil $15.78), TCGplayer market prices via Scryfall.
+1: Target player draws two cards, then discards two cards. −2: Gain control of target artifact. −6: You get an emblem with "Whenever you cast a spell that targets one or more permanents, gain control of those permanents."