Double-bugged Personality happiness.
Can't say how useful it'll be next arc, but I can say that it will be...kinda useful this arc. A 4F/3C Samurai Duelist Kensai can work very well with several decktypes. Unfortunately, I don't think any of those decktypes are Lion, but I could be wrong.
I like your reasoning.
I am proud to be a Black Lion. One of many...
What am I playing now? [still in development]