Interesting notes.

1) Many probably know this, but I'll write it down: Barbarian Luck doesn't work as it should. Instead of reducing damage by 5% for each point of Luck, it simply reduces damage by 5%, which makes this skill useless. 2) If your unit has been affected by Berserk, you can cast Teleport on it and teleport it away from your other units, so that the unit under Berserk doesn't deal damage to your own units.