So one of my players came up with the idea of taking negative characteristics as a power and then grabbing the Usable as an Attack to transfer the negative characteristics to other characters. As an example... Character has STR 60 with Negative Characteristics of -40 STR as a power that's usable as an attack, so in reality he has 20 STR but can make other characters suffer -40 to their STR without taking the Drain power. In my mind this is more so him trying to game the game by not building it as a Drain but as far as RAW I couldn't see a reason as to why not. So is this a legal combination?