"So you want strength and immortality, huh?" Zarathunathis laughed out loud, "Hahah, now this is something you should ask from a demon of my level." He snapped his fingers, and Edward floated gently towards him, stopping in front of his face. A contract surrounded by a dark demonic aura appeared before him, something anyone with a normal mind would recognize as ominous, and not a thing they should go near.
"Sign this contract, my child, then I can give you what you desire," Zarathunathis said gently, but the smile on his face clearly indicated he was more excited to grant Edward's wish than Edward himself.
Edward looked at the contract. Except for a single line in which it was written that Zarathunathis would grant him power and immortality, the other things he couldn't read at all. The problem was that there were more than twenty lines in total, and he had no idea what was written in them.
Creation is hard, cheer me up!