I haven’t develop the full idea but here is the concept.Mirror is a type of hero that can copy a hero of the oponents team. It will have the power of your top hero for PvP matching. But in game It copies everything including the power, abilities and structure of the hero it attack in the beginnig of the game. I don’t know how he/she is going to fit in other modes like in levels and raids. but I believe we could use this hero for PvP or gauntlet missions.