With all due respect, black knights and bone dragons are the most viable units for a no-loss game. Evlin should be nerfed becaused it is only 35 mana and can ress over 150 BK's/15-20 Bone Dragons in one go, and that's some mana that both warriors and paladins can spare and regain on the next turn with calm rage.
Inquisitors are squishy for a no-loss game. Only 70 health is pretty low. Even though the can generate rage, in boss battles, where a no-loss game is decided, the AI usually goes after them first and they may be gone before you even know it, and casting time back over and over as a warrior or paladin will drain them of mana in record time.
Although I admit that I made my first no-loss mage game with humans (paladins, knights, horsemen, archmagi, demonologists), it was touch and go for a while. 1 more hit from baal and I wouldn't be able to ress my losses (even with phantom at 93%). So I consider myself lucky
