I've seen many wizards asking for Balance Prism, so here's my thought. Instead of a "Convert next Balance attack to ______ attack," how about it reduces an enemy's resist to any school by half for the next attack? These can be used by any school spell, like Balanceblade or Hex. Fr example, if someone is fighting a Fire boss who has 80% Fire resist, one player uses Balance Prism on the boss. The next Fire spell that hits the boss will only be resisted by 40% (any other school spell would have no effect.) How does this sound?