Teferi's Isle is a rare Legendary Land card from Mirage (MIR), collector number 330. Current market price: $10.98, TCGplayer market prices via Scryfall.
Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.) Teferi's Isle enters tapped. {T}: Add {U}{U}.