what prevents a player to always revert to the same ring for a type of action.
I'm only talking about mechanics here, don't answer with stuff about RP, or diversifying. I get these points already. Diversity adds flavor and makes RP more pleasant. But there are some one-dimensional charas.
like, I'm a brash daredevil Matsu,I only use the fire approach for striking and in most things I do.
Even with descriptions, savvy players will use the same kind of description to get a "template" mechanical effect.