|Japanese Incantation:||Aian Gurabirei (アイアン・グラビレイ)|
| Description: Ion Gravirei is Brago's fourth spell. An enhanced version of Gravirei, it creates a powerful gravitational field in the form of a beam, capable of effortlessly leveling trees to the ground. Brago can control this attack with his arm, spreading the field around him wherever he moves it.
The range of this spell is varied based upon what form is used. As a beam, it can extend a fair distance away and when swung can cover the radius of an entire forest. As a simple, wide gravittional force, it can still cover a large area. The force of this attack has the ability to neutralize multiple spells at a time, as shown when it was used to crush the attacks of Zofis's Ancient Mamodo.
|Brago's Other Spells: Reis, Gravirei, Gigano Reis, Dioga Gravidon, Baber Gravidon, Bidom Gravirei, Rior Reis, Oruga Reis, Diborudo Jii Gurabidon, Nyuuborutsu Ma Gravirei, Nyuuborutsu Shin Gravirei, Zangu Mareisu, Borutsu Gravirei, Amu Guranaguru, Berudo Gravirei, Digou Gurabiruku, Shin Baberuga Gurabidon, Kueaborutsu Gurabirei, Gravidon|