Garnet, you are wrong. "Magic of Fire" is not just a fire arrow! It's "Fury," which greatly increases physical damage! And what about BERSERK!
"Magic of Air" is Lightning and Chain Lightning. I won approximately 80% of the battles in the first month at the highest levels with these two spells. And for archers, "Rain of Arrows" +60% damage and no penalty. With the hero's passive skill +10% damage and +3% for each subsequent shot and +25% to range, archers decide the outcome of the battle.