It began with his skin.
Exedra's skin that was always an immaculate bronze suddenly became as black as the night surrounding him. His bones stretched and popped as he grew to match Helios' height of seven feet.
His long, dark hair suddenly grew even longer and returned to it's previous blood red. Three proud black horns jutted from his hair like a king's crown. In the center of his forehead, there was an ominous black eye with golden sclera.
The tattoos on the left side of his body suddenly began to glow with an odd purple light.
Though these changes were indeed impressive, no one was really able to notice them at the moment.
Everyone's focus was currently on Exedra's arms.
Or more specifically, the second pair that he'd grown right underneath the first.
If Exedra's previous transformation made him look like an angel of the abyss, his current one made him look like it's greatest warrior.