Counter-heroes in duel mode (3.1).

Cast spells: Plague 4 times, Mass Acceleration, Shriek, Vampires (if the Adepts are dead; if they are alive, finish them off with a direct attack). Berserk is a mistake in 90% of cases. Under no circumstances should you approach the crossbowmen within direct firing range while there are many of them (even 40 in a direct firing line can kill 2-3 dragons with divine power); gradually move all troops forward, including the archers (they need to step on the corpses of paladins or archers).