mtg card type definition Magic: the Gathering Basic Definitions: Part 1 Parts of a card -

Executing on Elements : Development of specific mechanics to match elements of FINAL FANTASY and how they fit together into a set

That ability is "when the last defense counter is removed from this permanent, exile it, then you may cast it transformed without paying its mana cost." This means that if for any reason a battle enters the battlefield without defense counters, it will be put into the graveyard and its controller will not get the chance to exile it

Card Name Mana Cost Type Creature Sphinx Rarity Mythic Rare rules Text FlyingWhenever an opponent draws a card, you may draw two cards

The difference between the two is what cards are banned and what cards are restricted