So... I just failed a shard invade on Beginner. I went after Beleth immediately after it became an available choice.
I backed up my save first, because I knew that I wouldn't attempt this so soon otherwise. But I'm curious whether it makes any difference, and I'm also curious whether Master domains are random or not.
In my case, it was a bit rough. There were Mandrake and Wood in the second ring, and... that's it. Horses and Iron were both super deep in Beleth's territory. I had Brigands and Archers for almost the entire game. I went Scout --> Commander, and I got fairly deep in, but it was so hard to defend the Iron deposit, having just barely made it there in the first place, and having to run to a Storehouse every 2-3 turns.
I eventually failed after I tried to invest in Tier 2 troops to make use of my new resource. By the time I had Iron, I only had 1.5k gold saved up, which just wasn't going to do it at all. I wanted to go pikeman-horse archer-monk-swordsman, but it just wasn't going to happen at that rate. I was also hiring Guards almost every turn just to keep my borders safe and my Scout connected to home, and I had to do so without Iron.
It really sucks getting screwed for resources. If it weren't for my epic quiver/bow I found in a random shop, I never would have even made it that far.
I'm not sure what to do. I could go slower and even resort to manual battle every battle all game long, but Eador is really time-consuming even with auto-battle.
Maybe there's something to be gained from having more shards, but I doubt it. Getting a couple buildings on Turn 1 can't really make up for not having horses and iron, and I don't really need to unlock Tier 3 or the rest of Tier 2 in that case, either. I just don't see this being any easier if I come back to it later.