In two out of three games, the devil is an idiot =(
I agree with you, teleport is not a luxury, but just a means of movement :D. It's the same type of movement as flight. Therefore, it shouldn't be better than other types. If dragons can only fly to the unit standing opposite, why should devils have the advantage of attacking any unit at the beginning of the battle? Then they should be made as strong as bone dragons. And I think "summoning the lords" won't be a thing anymore – it's a different part of the game, after all.
Overall, several types of damage will diversify the gameplay, but I really can't imagine poison damage.
Цикл "Закадычные враги": "Особенное гостеприимство, "Супероружие", "Меж молотом и наковальней"
"Падение Шантири"
Кампания для "Кодекса Войны"
"Выбор Сагиттеля"