Ceresa with her binding has a problem. She is NOT WEAK at all, but the problem is that she forces the same tactics every game (its a fun tactic though). I play medium/large maps, hard difficulty and dense monsters
My games with Resoln goes like this:
1. Get shards and corrupt them
2. Get the demons of the corrupted shards (now death shards matching her death magic nicely)
3. Attack bandits, mites and wolves to split them to 9 units each. Careful now, they are very weak until their first kill.
4. Attack some stronger stuff to level the demons
5. Crush every AI you see.
I played a game like this yesterday and got an isolated start. When I finally met Gilden he had about 6-7 cities and I had 3. I took my two demons and my Sov and easily took 3 cities from him. Each demon group has over 200 hitpoints and does quite nice damage (they have 0 defense though so you have to be a bit careful).
An Umberdroth came and razed two of my cities, but met his death when my demons arrived.
The good part. This is FUN! You have to nurture your demons carefully and they will reward you. The death shards matches the Sov perfectly.
The bad part. All the spiders you can produce and the other units you get from shards are totally useless, and I dont ever need them. You will always have to go death magic so there is little strategy there as well. In other words: My strategy is always the same, and that is not fun.
The solution. Make the other shard units a LOT better. Make spiders cheaper or stronger (maybe being able to group them).
