The Depths
Aldrich looked ahead at the pillar of chaotically flickering green light that would make him come face to face with the deepest core of his being. Within it, like being bathed in a waterfall, Rella stood, the light crashing around her. Her whole body lit up with a great many circuit like white patterns, showing that she was channeling the power through her.
"Come now, Usurper," said Rella as she nodded towards Aldrich. "Take my hand. Or are ye shy?"
"Give me a moment," said Aldrich as he manifested his Materius again. A red flash spread over his body, indicating he had sacrificed health. Creating his Materius took up 20% of his maximum health, but costs like that did not matter much in non combat scenarios like now.
The organs, flesh, and skin of his human body all wrapped up around his grey bones, padding his frame out until he was whole again. He had Medula's training garb pants still equipped on him, so he was not flashing the world.