Finest Fantasy 13

Ultimate Illusion 13|究極幻想13|Kyūkyoku Gensō 13}} is Luxord's joke weapon from Kingdom Hearts 358/2 Days. They are gigantic CDs, depicting the Nobody ensignia and the Roman numeral for 13 (XIII), a reference to Organization XIII.

Ultimate Illusion 13 is one of only 4 of Luxord's weapons that's name is not drawn from one of 22 cards that make up a Tarot deck's Major Arcana. The others are The Joker, Fair Game, and Gambler's Charm.

Ultimate Illusion is the ultimate attack of both Gilgamesh in Final Fantasy XII and Chaos in Dissidia Final Fantasy, and is a synonym for "Final Fantasy."