Shaman of Forgotten Ways is a mythic Creature — Human Shaman card from Dragons of Tarkir (DTK), collector number 204. Current market price: $6.37 (foil $29.02), TCGplayer market prices via Scryfall.
{T}: Add two mana in any combination of colors. Spend this mana only to cast creature spells. Formidable — {9}{G}{G}, {T}: Each player's life total becomes the number of creatures they control. Activate only if creatures you control have total power 8 or greater.