Which faction do you like the most in Heroes of Might and Magic IV?

What will you do against 80 vampires with your Disintegrate spell? It's very easy and quick to deal with them using Necromancy, but what will you do if you don't get that spell? Although, even if you do get it, it won't help much, as its damage is too low. Against such a large number of vampires, even Locusts, which stun and debuff their attack, won't be effective. It's just a flaw in the game that needs to be fixed.

80??? On what map? L or XL? You should have mentioned that from the start. It's hard to imagine 80 vampires on an M map, considering you can only recruit 2 per battle. And in any case, it seems your troops haven't used Disintegrate yet, because one cast will destroy more than 10 vampires, and as Lars correctly pointed out, they won't be able to recover. If we consider the scenario with 80 vampires, and it seems to be a large map, then creating 2-3 Greater Elementals of Chaos and finding the spell won't be difficult, because on such maps, you can find any necessary spell. Now let's calculate:
We take the damage from Disintegrate as 1000 HP. From three Chaos Elementals, that's 3000 HP. A vampire has 75 HP, so that's 40 vampires gone immediately! Half of what you gathered. And the remaining army will be well-protected by Black Dragons with a tactical stance, with attack and defense parameters of 60-70, making it painful for Devils or Skeletons to attack.

It's already been fixed. Install Equilibris, and your vampires will be as weak as kittens! And Necromancy has been significantly nerfed... In general, after installing the mod, you should reconsider your opinion about your favorite race!

That's why I hate this mod! Good job nerfing Necromancy, but the vampire stats...:( Sigh...