"How well can you control the tail?" Victor asked. Devotion demonstrated, moving the tail back and forth in a complex manner. He could even perform hand seals with the tail, or hold a weapon. Devotion summoned his Frostbrand into the tail's grasp, and swung it around a few times. He really had fine control over the entire Devil Form, like he had been this way his entire life.
"Like I've always had it." Devotion replied, sheathing his sword with his tail. "However, I can't hold this form very long. I can feel my energy draining with each second I'm in it."
Devotion switched back to his human form, the amulet returning to its dim green coloration it usually carried. When he entered the Devil Form, the amulet glowed purple, along with a small spot on the back of Devotion's neck. Victor barely noticed it, only when it flashed as Devotion left his Devil Form.