Added 36 minutes later
If it's this option: Hero: Orson. Dark Mastery: Curse, Pain, Dark Regeneration. (Dark skills to cast Dominate, Berserk, and mass spells.) Arcane Mastery: Distraction. (To quickly Dominate and etc., and to stun the enemy hero if they cast spells.) Attack Mastery: Tactics, Battle Fury, Magic Resistance. (Increase attack, position units as desired or negate bonuses, increase damage, move faster.) Defense Mastery: Resistance, Stone Skin, Dodge. (Defense is very, very important, +9, -20%.) Advanced Education: Lord of the Dead (Increases main stats, +2 spells, +1 knowledge.) This is right before the battle. Before that, I think I'll take Logistics and Pathfinding instead of Arcane Mastery, and in education, go up to Mentoring. Then, transfer skills to a Mentor and re-spec. More heroes trained with Mentoring for Necromancy. So, something like that.