Apocalypra Astrauza

Lightning Ultimate Magic: Apocalypra Astrauza (雷究極魔法『』) is Gadjah's lightning-based Ultimate Magic spell.

Description
With an open grimoire, Gadjah forms several interconnected natural mana arrays around his right hand. The arrays concentrate a large amount of mana and convert his lifeforce into more magic. As he thrusts his right hand forward, the arrays release all the magic in a concentrated beam of lightning that is capable of overpowering Decaying World and disintegrating the body of a highest-ranking devil (but not completely).

Gadjah's body is left charred and crumbling due to the sacrifice of lifeforce.