I would like optimization advice and fluff/flavor advice. When using the Bladebound archtype, I cannot add abilities to my weapon, its minor-ly prepackaged... if you like pathfinder, I would a look at it, it is really cool, almost as fluff open ended as synthesist summoner. And this will be my first Pathfinder only campaign, so no 3.5 unfortunately.
I can change the what the black blade looks like to fit a new theme, but I am dead set on the non lethal at almost any time.
Anything on ideas and such can be helpful. Brainstorming can lead to a dramatic rewrite if people have an idea I didn't think of that fits my general idea more.