Also known as: トリニティフォーム
It is one of the forms of Kamen Rider Agito.
Based on the Ground Form, the right arm is in Flame form and the left arm is in Storm Form.
In this form he holds a Flame Saber (Kamen Rider) in his right hand and a Storm Halberd in his left.
His finishers in this form are the Fire Storm Attack, in which he slashes the target with a weapon in each hand, and the Rider Shoot, in which he unfolds his horns like a fan and then performs a Dropkick