Children of the Full Moon are a select group of humans blessed with a formula that allows them to convert aer into energy and use powerful spells without the use of a blastia. However, the Children of the Full Moon ultimately consume more aer that even the most potent of blastia, making them, as the Entelexeia refers to Estelle, an "insipid poison" to the world and its balance. As a result, the land's aer krene become stimulated, eventually reproducing an excess of aer that spurs chaos in the surrounding areas. Similarly to blastia, this "abuse" of aer empowers the Adephagos, a monstrous non-sentient being dubbed the "Cataclysm".