Eden Era wasn't the only rationale for their being damage in that instance, nor would it have been my basis for determining damage.

Again, the battle didn't establish parameters and I'd disagree with rigid enforcement of original Eden Era rules (especially since they've rightly been enhanced throughout the years and the material that originally shaped them also developed to incorporate far more nuance). Many of the later adaptations to both the Eden Era's and the chat rooms generally accepted guidelines and principles didn't necessarily strictly enforce the one prep per turn (depending on the tier, characters, etc). So, as much as I'd love to use 

However, [@Dazsos] in that instance with what you are referencing those aren't necessarily prepped spells.