By condensing æther up into the air, Atrax makes it appear like a black night sky. The æther is then rained down upon his foe(s) in order to cause extensive damage. Atrax claims this spell to be his most powerful Generation Magic spell.
Nyx: Etereo (空気のようニックス Kūki no you Nikkusu) is the Etereo Class advancement of the Nyx Spell. Instead of raining down dense æther upon the foe, Atrax unleashes a wide blast of dense æther. This form is both faster and more versatile, as Atrax can unleash it from any angle, rather than just from above.