Xenagos, the Reveler is a mythic Legendary Planeswalker — Xenagos card from Theros (THS), collector number 209. Current market price: $1.68 (foil $21.81), TCGplayer market prices via Scryfall.
+1: Add X mana in any combination of {R} and/or {G}, where X is the number of creatures you control. 0: Create a 2/2 red and green Satyr creature token with haste. −6: Exile the top seven cards of your library. You may put any number of creature and/or land cards from among them onto the battlefield.