Thank you, Jack, for explaining it so clearly. It turned out that the function wasn't working for me not because I misunderstood the principle, but because I made a spelling mistake... it happens. I have a question: can the amount of Dark Energy a Necromancer has be influenced in any way (or at least simply counted)? Also, is it possible to influence the number of creatures available for training for the Knights in any way, perhaps by changing it with scripts?