Monadic vs astral deva choice?

[MightyMouse]

I'm in the endgame as an angel just basically crafting relics while waiting for the magic date for the secret ending to arrive. Targona came and got me to listen to a monk and a warrior tell a story, at the end of which I get to choose between Power and Knowledge. I chose power, but cannot find the benefit I received from this choice. Anyone know what is happening here? The game is usually so transparent about your buffs...

[The Cystocot]

Been a couple months since my Angel run, but this sounds like an event that would lead to a crusade recruitment card, I distinctly recall getting one to recruit 4 or 5 Movanic Devas, back when their tool-tip was buggy as all get out, displaying no info on their damage levels.
If one turns up, there you go.
The unit was only so-so in my experience, did okay damage, but due to the limited number you could get per card use, and it's lengthy downtime, they never became a regular member of my army roster(though there is the possibility of a late-game card turning up to recruit an "Army of Heaven", which gets a decent sized stack of both Movanic & Monadics, but by that point, my armies were pretty much set, and every demon outpost cleared, so i never tested them at "full" strength)
Also, even as a basically free unit, their individual cost must be set pretty high, another reason i never really bothered was that losing even one would fill up a low level general's infirmary bar about 50%, but in the late-game, that would be less of an issue.

[MightyMouse]

Thank you