Dack Fayden is a mythic Legendary Planeswalker — Dack card from Secret Lair Drop (SLD), collector number 1689. Current market price: $6.05 (foil $5.47), 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."