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Berserk. Nuances of attack and defense. - Did you watch it?
It is known that creatures under the Berserk spell sometimes behave quite strangely, namely: they skip their turn when they could attack. This is because any unit under the Berserk spell can only attack the right (for the attacking side) / left (for the defending side) cell of two-cell units. In the screenshot below, the Champion, who is under Berserk, can attack both the Cavalier and the enemy Champion (the distance to both creatures is the same). The target is chosen randomly. So, if the Champion is chosen, the attack will be made (the right cell of the Champion is available for attack). If the AI chooses the Cavalier, then our Champion will simply skip his turn, because the right cell of the Cavalier is not available for attack in this case (the Champion does not have enough speed). If you remove our second Champion, the skipped turns will disappear (with a 50% probability, the enemy Cavalier will be attacked and even with a decent damage bonus).
Attention! This technique can lead to a battle loop, when 2 units under Berserk remain within reach of each other, but neither unit has enough speed to strike at the "tail" of the other.