Advantages of Mages over other races.

It's a one-sided race, and that's correct! That's why they need those artifacts! With their help, you can significantly boost the stats of your troops! Both attack and defense! Even if the hero's stats are low... this ability is one of the best!

Added after 7 hours and 54 minutes
To perform the maneuver, there must be free spaces around the cell! You can't place them in the middle of the field! I played as the Stronghold, and they simply can't run through, their own units get in the way (at the beginning of the battle), but towards the end, you can just stand in front of them, and that's it.