Heart of the Night

I started playing for the first time and Karlom picked up the Dragon Eye artifact, so I lost the first undead attack. I had to replay the scenario from the beginning. The second time, Gerta got the artifact and repelled the first attack, but the surprise in the form of a destroyed city wasn't great, as there were a lot of losses and no time to replenish them before the second attack. I gathered 80 nymphs, dancers, and archers, 70 druids, 30 unicorns, and 20 ents. It turned out to be not enough, as the necromancer summons phantoms, and whenever I kill someone, even slightly, he revives them without a spell.