You'll see a collector number followed by a single letter: C, U, R, or M
Items Cards that are put aside next to the play area while playing, it gives the player the option to exert (sometimes with extra pay) it and gain the ability written there
Each card has a cost you must pay
The deck's main MTG commander Tidus is all about moving counters around, apparently based on the Sphere Grid level up system, and so it's not surprising Yuna plays around with counters too
The Best New Commanders in Final Fantasy Hildibrand MandervilleHildibrand Manderville | Art by Akagi Final Fantasy has nearly 100 new legendary creatures you could build Commander decks around, and that's not even counting all the new legendary creatures found in Final Fantasy Commander
GLEAM AND GLOW is the best healing effect in the game by a mile, allowing you to heal 3 damage (from a single character) and draw 3 cards