I think that is where the arbiter idea comes from? She knows alot about Zeal perhaps because her "father" knows. You know Lynx has a good collection of books/tomes...or perhaps Viper himself was also an Zeal expert.
It reminds me of some odd story. For example, in Splatterhouse 3 (an video game if you don't know), the minions of the Evil God plan to resurrect him with the power of the Dark Stone, they also need a child with psychic power as a key, otherwise the "rite" won't work.
Though that is not something famous, but I wonder such kind of stories are not uncommon, a writer like Kato might have read a lot, so there's a chance the idea slipped through his mind...
