Empty promises

The oracle of Delphi gives a prophecy.
'The children of death and daughter of wise
must save me from utter demise
all better judgment must they defy
Follow the weeping trees
To a trial of Hercules
Fore my new prison lie ahead
The cage will open when the marsh runs red' Percy wants to go, but prophecy's go in three's only Nico, hazel, and Annabeth can go on this journey. (Ps, I made this idea b4 trials of Apollo came out so imagine Zeus doesn't blame Apollo for the whole thingy and demigods have to deal with the oracle) (pss, the first chapter is short as hecc but they get longer) (psss the title and the cover won't make sense till the end of the thing just wait for it.) (pssss it's like hecca sad imma tell u now)
(Eeeehhhh might finish might not)