Dack Fayden is a mythic Legendary Planeswalker — Dack card from Secret Lair Drop (SLD), collector number 251. Current market price: $2.55, 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."