As with all Quincy crosses, it is designed as a focal point for the user to gather ambient spirit particles in the air. Unlike most, however, the form created by the cross is instead immense wings that which hover off of Rudo’s back when manifested. Spanning fifteen feet from tip to tip, the wings are massive yet are surprisingly dexterous. In actuality, the primary mechanic involved in locomotion is the intensely-precise displacement of reishi particles gathered around Rudo; instantaneous acceleration at any angle is possible.
That said, the laws of nature are not easy to defy, and so any inertia on Rudo's part is retained should the wings deactivate or attempt to decelerate, with the speed of movement (including deceleration) being determined by his Douryuu stat. Similarly, reishi cannot gather so thickly in the skies, limiting Rudo to a 1km height while the Kreuz is in use.
Activation of the Kreuz von Erhabenheit costs 1,000 Shuuhaku per round, and cannot be powered by Reiatsu. Should the wings take significant damage, they dissipate immediately, and require an additional 500 Shuuhaku to repair in addition to requiring reactivation.