[@Drifting Pollen]: Anne fine. Accepted.

[@VitaVitaAR]: Lily fine. Accepted.

[@DracoLunaris]: Few things.
[list][*]I'm going to be honest, I'm not going to be super nitpicky as to exact mana costs for skills and abilities. Going to be very hands-off on people doing stuff under the assumption that I can trust that they're not pulling some insanity by dumping all of the everything out at once. To that end, costs don't really need to exist in this context (beyond any translation of mechanics like you suggested for the card system). That being said...
[*]Mana exists within the world as its own... Thing. Would that mana and the mana that the character uses fall under the same umbrella and, if so, what effects does that have in turn?
[*]Dashing as you have it is a very literal translation of game mechanics to prose, which I don't think would allow for anything like "abusable iframes" in this context. Could do well enough to remove it or rephrase it to be more of a general movement option.[/list]