I really like Phoenixes; there are many of them, they are fast, it's easy to build a bonfire, they are incredibly cheap, and they are immune to fire.

Unit morale is the probability of a unit repeating its action in battle. With a positive morale value and some luck, a unit can act twice in one round, and with poor morale, it can do the opposite – become inactive. (Note: Morale is often referred to as the troops' Battle Spirit). The army's Battle Spirit is modified in various ways: by the hero's "Leadership" skill, by artifacts, by visiting locations that increase (or decrease) morale, by the presence of a tavern in the city (for the garrison), by the presence of hero (or enemy) creatures in the army that increase (or decrease) Battle Spirit, and also: +1 if the army consists of units of one race; -1 if the army contains undead (excluding Necropolis armies); -1 if the army consists of units of three different races; -1 for each different race unit after three (For example: three different races - morale -1, four -2, five -3).

The magnitude of morale (+1, +2, +3) gives the probability of repeated turns in percentage terms, respectively (4.2; 8.3; 12.5)%.

But if one player has Leadership +1 and the other has +3, then in battles it sometimes happens that the one with +1 gets a repeated turn more often. This can sometimes be very frustrating. :).
It's just that the machine calculates the "probability" percentage, which is impossible to predict.