BCalchet
Human, all too human.
DO you really consider Elohim THAT weak?
Not at all, I just figured they could use some mana for the very last stages of the game if they haven't gotten their hands on them by then - and being a defensive civ, they might be less likely to go out and conquer someone else for their mana needs.
It's just a rough outline in any case - push the required tech up to armageddon, remove a mana or two, replace it entirely - whatever works.