User blog comment:Crimson Storm Mich/Future Units Preview v2/@comment-27362456-20161203170803

I might be over thinking things here, but I believe Maxwell OE will be Water and Cardes OE will be thunder. Reasons being their disciples or in Afla Dilith's case the disciple he went up against. The Gods shown had the weakerer element to the corresponding disciple.

Afla Dilith (Fire)   VS   Tazer (Water)

Zevalhua (Earth)   VS   Alpha (Fire)

Meaning most likely

Maxwell (Water)   VS   Kanon (Thunder)

Cardes (Thunder)   VS   Tora (Earth)