To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Danitha Capashen's last ability)
If youre going first, you could discard three cards during your first turn to cast Neo Exdeath [12-110L], to restrict your opponents freedom, but they could potentially discard two cards out of their hand to play Alexander [8-046R] before bringing out any of their characters, so that they would defeat Neo Exdeath [12-110L], and then play their Backups and whatnot afterwards
You can view all of the cards from the set in the Magic: The Gathering FINAL FANTASY Card Image Gallery and learn more about where to find these cards in this article
Standard nonfoil sets launched at $30, and rainbow foil versions at $40 , but most listings now sit between $80 and $150 or more
Also there are many more cards like Force of Will and Gurmag Angler and the like in the constructed formats which further empowers Thoughtsieze
Just look at that goofy wolf