Teferi, Mage of Zhalfir is a mythic Legendary Creature — Human Wizard card from Time Spiral Remastered (TSR), collector number 91. Current market price: $2.43 (foil $4.67), TCGplayer market prices via Scryfall.
Flash Creature cards you own that aren't on the battlefield have flash. Each opponent can cast spells only any time they could cast a sorcery.