Secondary skills in Heroes 3.

still, you need to level up your hero so that there are no weak spots. and he should be a warrior, able to use magic.
-the most important thing is earth. no discussion.
-logistics
-attack
-defense
-air
-leadership
-intelligence
-ballistics

in any battle, speed is applied to everyone, and if the opponent is in a castle, then ballistics does its job. this is how you take out a warrior by slowing him down and a mage by speeding yourself up. in addition, earth helps with the city portal and air helps with the dimension door. if you also find an explosion, it's a real fairy tale...

here, I've revealed all my secrets... hee hee, for the benefit of beginners)