Archmagi, Priests, Inquisitors, Necromancers, Demonologists (against demons), Shaman Blade Dance, Lake Fairies, Tree Fairies, Dryads, Druids, White/Black Unicorn (horn of light), Gorguanas, Beholders, Evil Eyes, Emerald Green Dragons (mana drain). Zilgadis also has a mass attack, magic based.
That's a nice list, don't you think? I know physical damage is 80% of the game but the other types of damage can't be dismissed