Champ based on drawing Calligraphy for reward in power? Several Scripts range in difficultly/effect.
The type of Calligraphy would depend on the Champs origin or maybe it could be it's own style.
My thoughts are it would be an active ability that draws a line as the champ moves within a certain range of original cast position for a set duration, and gives a different spell or effect based on what is drawn, with higher movespeed enabling quicker and more difficult "Scripts".
Think it would be fun and a nice alternative to "this stat=that stat".