Which combined artifact is the best? Auto-translated

My great-grandfather's armor...
It has so much negative impact that the enemy's morale drops, plus it doesn't have many parts for assembly (compared to the Power and Haven factions).

And what if scrolls and Armageddon's Blade are disabled in the map settings, and you won't be able to get this spell at all?

Excuse me, where did you see forbidden artifacts and spells in Heroes 3, except in the editor? And who will let you mess around with that in a tournament? :) :)

Added after 18 minutes
If I have a lot of mana, Castle, Armageddon spell, and expert in fire magic, then there is simply no equal in power!!! (I must note that these are builds, and Armageddon's Blade is not a build!!!! but it is undoubtedly the best artifact in the world of Heroes =)) In general, I voted for the Alliance because I like Prayer, and morality doesn't decrease from worldviews, except for the undead, and there's also +21 to primary stats, while Power only gives 17. The Cloak is great, but if you're not a Necromancer and don't have the Zombie enchantment, it's useless, except for lowering morale. And if you take all the slots for artifacts on the hero, you can wear several: Elixir, and then it's up to you: Alliance, Cursed Armor, Thunder. P.S. Armageddon's Blade is the best artifact in Heroes 3 and WOG!!!!! Small and useful!

If we approach the voting objectively, then the King of the Dead's Cloak is in a league of its own. Although I don't enjoy playing as Necromancers, this artifact is unmatched.

It's unmatched for 2 reasons:
1 - It requires 3 artifacts to create.
2 - They can be found on almost any map.

I'll say it again: "Why would anyone other than Necropolis need it?"
So what if there are skeletons?

I'll repeat myself: "why would anyone need it besides Necromancers?"
So what if there are skeletons?

It's useful if the Witch has received the spellcasting (Necromancy) perk. It might also be used to guard the castle while accumulating resources. I wouldn't give it to a Knight without Necromancy; my morals are more important than undead.

That’s exactly what I was thinking.

For Necropolis, the King of the Damned cloak is a must. Raising liches is incredibly powerful. As for the others, the Angel Alliance is a good choice.

It's strange that not much has been said about its power. And if the starting castle is also a Conflux, then that's your first move. You need to slow things down, and then deal some damage to the enemy with Armageddon. It's quite strange that Armageddon is a level 4 spell, in 1 and 2 (I'm not going to talk about 4 and 5, not for fans of the third game; these are different games). It's a level 5 spell. But in general, each artifact is good in its own way, for example, the Mage's Well, the Horn of Plenty, and even the Mage's Ring! The Legion Statue is generally great – you gather it, put a hero with it in the castle, and the main thing is to have enough money! And the Titan's Thunder for a warrior hero?
P.S.: Everything written above is IMHO; they are all good for certain circumstances.

it's still a bit disappointing about the admiral's hat:
only two artworks, but what strategic help they provide.

Yes, they forgot about the hat, which saves moves and allows for more moves on water, and provides immunity to whirlpool "curses" (and everyone is happy with the army's integrity, and it's very annoying to lose it when crossing whirlpools, which often have an unlimited number of uses).

They forgot the hat.

Yeah, I agree. To be honest, I never use whirlpools. It's not efficient. And when the computer plays, it just wanders around (apparently, it doesn't lose units). But as far as I remember, I've only found it once, and that was already assembled.

It's especially annoying when only one cell remains until the ground, but the turn ends, and you have to lose an ENTIRE turn just to land. This happens to me quite often. Also, I have a question: is it possible to make the random map generator create normal maps with water? Because sometimes it creates maps where the islands are simply filled with objects, making it impossible to even land on them.

Elixir of Life, because all troops gain +25% hit points. As the army grows, the artifact becomes increasingly important. Moreover, it is easy to obtain, requiring only 3 components.

Elixir of Life, because all troops have 25% more hit points. As the army grows, the artifact becomes even more important. Besides, it's easy to acquire, requiring only 3 components.

What about Necropolis and Elemental creatures? They will only have 4 hit points and regeneration, and the same goes for fairies and phoenixes, as they are living creatures.

is more beneficial to stronger creatures than to weaker ones.