I know that the Cloak of the Undead King, the Armor of the Damned and the Angelic Alliance all play the important role in the Shadow of Death campaigns, and are all assembled and used throughout them. I also know that the Elixir of Life and the Statue of Legion are assembled in the campaigns too, even if you don't get to actually use these artifacts, as your mission ends at this point. And I vaguely remember that the Titan's Thunder can be obtained for a single mission, but I'm not 100% sure.
I was curious if there are any other combination artifacts that can be assembled in SoD campaigns, even if just for a single mission. I know they can be assembled in Heroes Chronicles (playing through them right now), but I'm not so sure about SoD. I got the impression that the other ones can only be obtained in standalone maps. Is that indeed the case?
I'm particularly curious about the Power of the Dragon Father, I'm somewhat disappointed that I didn't get to see it anywhere.
Best Answer
Yes, it is possible to assemble other combination artifacts in Shadow of Death. In "Fall of Sandro" in Unholy Alliance, you can trade in the Elixir of Life for other combination artifacts at a seer's hut underground. Here is a map of that mission:
Legend:
Source: https://www.celestialheavens.com/viewpage.php?id=307
There are seer huts not marked on the map in the other underground chambers, each one gives you a different combination artifact in exchange for the Elixir of Life (Which can be obtained in that mission). According to Celestial Heavens:
Now, you can also assemble other combination artifacts outside of that mission. 90% of the artifacts on each of the maps are random, except for ones that have been specifically specified by the developers. In the first mission of "Elixir of Life" (Gelu's campaign), I have actually assembled the Ring of the Magi because one of the enemy heroes that was trapped underground had two of the three components, while I happened to get the other one. Unfortunately, I didn't get to put it to good use, since I was then able to finish the mission by capturing the last town.
Now, whether the components of the various combination artifacts will appear in YOUR playthrough of the campaign is heavily dependent on whether the developers chose to specifically exclude certain artifacts from appearing in a map and whether the RNG will spawn the needed components.
TL;DR: It all depends on luck.