Mutational Advantage and Power Fist are still pretty valuable, alongside Guardian Project, but the biggest draw is that nothing plays quite like this
Balthier and Fran Bartz and Boko Choco, Seeker of Paradise Cloud of Darkness Crystallized Serah Diamond Weapon Esper Terra Exdeath, Void Warlock Garnet, Princess of Alexandria Gladiolus Amicitia Ignis Scientia Jenova, Ancient Calamity Neo Exdeath, Dimension's End Omega, Heartless Evolution Quina, Qu Gourmet Ragnarok, Divine Deliverance Rinoa Heartilly Rydia, Summoner of Mist Sazh Katzroy Serah Farron Sin, Spira's Punishment Terra, Magical Adept The Earth Crystal The Wandering Minstrel Tifa Lockhart Torgal, A Fine Hound Vanille, Cheerful l'Cie Yuna, Hope of Spira
Metamorphosis Fanatic As a 6-drop, Metamorphosis Fanatic is nothing to get exicted about
The game can be played in traditional one-on-one style or with up to five players in a way similar to Commander