What balance do u want? Knights and paladins have highered weapon dmg, what more do u you want? Only druid buffs could be justified since they are the worst vocation here considering runes are 2x but sio still costs 70mana, making it useless because its better to just make an UH for 100 mana and heal twice. So maybe buff sio to 50 mana to make it atleast equal to uhs mana wise.