Teferi's Isle [Mirage] SM167 Choose an action card with

Choose an action card with {d} less than or equal to X then add it to this chain link as a defending card

Set: Sword & Shield: Crown Zenith Type: Fire Rarity: Radiant Rare Retreat cost: Colorless

then you may cast any number of spells from among those cards without paying their mana costs

Set: EX: Dragon Frontiers Type: Darkness Rarity: Uncommon Retreat cost: Colorless

Teferi's Isle [Mirage] SM167 Choose an action card withSet: Mirage Type: Legendary Land Rarity: Rare 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 the battlefield tapped. {T}: Add {U}{U}. The three wizards knew only that this isle held a great mysteryand that patience alone would solve it.