It seems the reason the Chroma attacked Gematria with the God of all endings...

...was to obtain Gematria's secrets and experimental findings.

The path of Decagrammaton,

the secret of Mimesis,

"Communio Santorum",

the Library of Lore,

the power of the nameless gods, and abilities of the unknown guardians...

...and now, the Guide of Chroma owns them all.

The "Guide of Chroma"?

Yes.

A being that represents the will of the Chroma...

...and which dictates all plans and purposes...