From playing with the heroes such as Yuna, Wakka, and Auron, to even finding uses for the minor moments such as the traveling shopkeeper Oaka constantly asking you for money (though in MTG hes after your counters to exchange for drawing more cards)
Enchanted versions drop the standard card border entirely, expand the artwork to fill the whole card face, and apply a shifting inkwash foil that picks up rainbow tones under light
Marcy: Ultima weapons are generally the "best" weapon a character can get in the game, with each class having a specific iteration of their Job's version of it
In a pinch, you could just use her as a four mana edict effect to take out one big threat, which is a nice bonus to have access to
For example, you can cast a creature with madness if you discard it during an opponent's turn
Epic, Enchanted, and Iconic cards sport foil treatments, foil stamping, and many more deluxe embellishments