Can' other people build their own mirror box, and trick a Wisdom's Asp into it? Where it will either escape or die and bleed out the energy? We were initially going to get like a gallon of the stuff if it died, but we got lucky and Boney didn't decide what happened on a direct 50 which was rolled, so it was in between. (Which... theoretically could happen again if enough Wisdom's Asps were caught... though Boney might just not allow that for balance reasons.)