Formula

A Formula is a summon associated with Rift Blades, although not exclusive to.

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According to the in-game book Formula, the concept is unknown to most people outside Rundh. Formulas are created in the Rift when first called upon, which makes them a type of Rifters. However, Formulas can for an unknown reason not be found when exploring the Rift. A Formula is what an individual consists of, and the Great Lord Karm was the first to ever summon one.

Formulas allow an individual to use skills their class would normally not allow them, and are classified by constellation.

It is possible that summoning a Formula is easier while physically being in the Rift. Kanon, who had no prior Rift Blade training, managed to call forth Fleurety through strong conviction. It has also been hinted that Armer can summon Jikokuten. The actual act of obtaining a Formula through Rundh training is unknown. Furthermore, Formulas seem to be based on real-world deities, demons, angels, and mythological creatures.

The Magic

 * Fleurety

The Tower

 * Tzitzimitl

The Key

 * Koth