Besides, the "magical chains" skill is more related to combat, as the damage when a unit "breaks" them increases with the hero's attack. As for the battle with the Necromancer, there was such a case in the test: after applying 4 combo points with Assassins to skeleton archers, I finished them off with black dragons, which have opposite elements. The result was: 15 black dragons took out about 3100 skeletons (out of 4000) - I hope that's enough?;)
Besides, the "magical chains" skill is more related to combat, as the damage when a unit "breaks" them increases with the hero's attack. As for the battle with the Necromancer, there was such a case in the test: after applying 4 combo points with Assassins to skeleton archers, I finished them off with black dragons, which have opposite elements. The result was: 15 black dragons took out about 3100 skeletons (out of 4000) - I hope that's enough?;)