Tactics for Necropolis.

Lider1
1. The Sphere of Inhibition makes this option impossible, and the Cloak of Negation significantly weakens him.

You're telling *me*! :D

2. Specifically against Armageddon, skeletons are better than troops from other castles - one super stack suffers less from Armageddon than many regular stacks.

Undoubtedly, 1 strong stack of skeletons can withstand a hit and even several rounds. Everything depends on the parameters of the attacking hero and the strength of the skeleton stack itself. BUT again, you can have strong parameters (strength), 7 level 1 Phoenixes, and attack for 6 rounds, for example, and retreat on the 7th. Of course, you need to take into account what the opponent is casting in order to have time to react. In any case, you lose 2500 to ransom the hero and 1500 (or so) to ransom the bird, while the enemy hero effectively loses all his troops. And it's even more of a hassle to gather demons than skeletons, plus it takes a long time, in real time, with tedious, long turns.

3. If the attacked hero doesn't spend the night too close to the enemy castles, it won't be possible to attack him many times in a row.

Obviously! But. You can attack not with 1 hero, but with several, strong mages. And then attack with the main hero and kill with an explosion, for example. And that's very annoying, when you can't do anything. Even move anyone. Although you supposedly had a strong army. It would seem... But it's not always possible to approach a castle to capture it + you need to know that it's not there. And how do you know everything? Either by using the "Eagle Eye" spell or... you know what. And you don't always have that. So you can get ambushed from the darkness.