Forum Reg of sorts
That isn't a bad idea. That would certainly make him/her (it?) unique.As an idea that both keeps the self damage and rewards pichu for doing well, have the self-damage from pichu's electrical moves be put into a buffer. When pichu connects with an electrical move have it heal pichu for some of the damage in the buffer (in terms of flavor pichu builds up static by using moves and dealing electrical damage removes some). To expand on that you could add bonus damage for removing more static, give a way to turn normal damage into static, or even grant new abilities only available (or only after removing) over some amount of static.