Teferi, Time Raveler is a rare Legendary Planeswalker — Teferi card from Mystery Booster 2 (MB2), collector number 91. Current market price: $3.99, TCGplayer market prices via Scryfall.
Each opponent can cast spells only any time they could cast a sorcery. +1: Until your next turn, you may cast sorcery spells as though they had flash. −3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.