User blog comment:BlueLantern1995/The Prophecies: What We Know and What is Logical/@comment-71.70.160.157-20121217232857

I think it may be annabeth, nico,chiron or reyna

Annabeth-Because she made a promise to chiron to protect percy

Nico- Because he made a promise to percy at the end of MoA to lead the others to the doors

Chiron-Because he has all kinds of oaths and promises

Reyna- Because of her talk with aphrodite