Balance in Heroes 5.

Yeah... you say there can't be a race that wins against everyone, and then you say the Academy won against you and that's the only reason you consider it cheaty. You're contradicting yourself.

If I consider it cheaty, it doesn't mean it can't be beaten; after all, Inferno has a hero who increases magic immunity, and a Phoenix can be killed by Pit Lords—I just don't know how to kill it with Necromancers (i.e., I consider it cheaty not because it wins against everyone, but because it beat the Necromancers, since that is the strongest race). Nura might not even need to go back to the castle for armies and spells; arrows and the starting army are enough for her to clear all the territory surrounding the castle. She is a cheater, undoubtedly—play as her and you'll understand; it's impossible to develop faster than with her.