Teferi, Mage of Zhalfir is a rare Legendary Creature — Human Wizard card from Time Spiral (TSP), collector number 83. Current market price: $3.05 (foil $35.05), 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.