User blog comment:BlueLantern1995/The Prophecies: What We Know and What is Logical/@comment-4509745-20121230225508

I feel like the only oath made so far was Hazels to protect Franks piece of wood. Anything else is pure speculation. Hazel may die protecting it, don't forget she was born before her time, and she was brought back for a specific purpose. Think about what she represents...she has no real purpose except that she is holding the wood. She is Franks protector, and was brought back to keep him safe, We already know she has a large role to play, and hers will be to protect franks wood no matter what.

Secondly percys fatal flaw could apply to anyone, but i think that someone will have to close the doors of death, and they need to be closed from both sides, which means someone isnt going home. Everyone can say percy or annabeth but i dont think so. If either of them are to die it wouldnt be appropiate here in the story. Maybe Nico, maybe a soul from the underworld, maybe anyone but i doubt one of them.