[@Chevaleresse] Magical girls are girls with magic.

The original RP was pretty lax as for what counted as a magical girl. If you look at the character tab you can get an idea for what's in the RP already, but we have just about everything. Tacticool girls, cyborgs, yokai, professions, folklore, moeification of anything, etc. So long as it's a girl and her abilities are granted by magic, it's pretty much allowed. They just need an emblem, sweet arm, and a theme for her magic and she'll fit right in.

EDIT: As for powers, I recommend being a bit nebulous with the exact destructive potential of your abilities. Things aren't quite city buster level yet, but there is a bit of a power creep, so who knows what will happen?