Yeah, I missed that upgrade. Thanks for the info.
Looking at these upgrades, you wonder how it's possible to maintain balance, right?

It will be balanced, considering that they changed all the creatures and all the classes. Something must be done to maintain balance. For example, the unicorn, unlike the war unicorn, lost its magic resistance aura, and the poisonous hydra lost its regeneration. The hell mare lost its fear aura. The djinn vizier now controls luck, the lich-master now deals damage not with death rays, but to those around him. The guardian of Arcat lost 50% magic proof, gained fire immunity instead, and explodes upon death, dealing damage to all enemies around him. It also casts a fireball instead of a wall of fire, and it also lost crossfire. So, there is balance.