I experienced something while playing today, and I wanted to have confirmation that it is not a bug:
I was playing the campaign 2 - mission 4 and leading a big sylvan army with my Agrael hero(no inferno creature in the army).
I noticed that on each passing day, I had some creatures dying by themselves.
Exemple: day after day, my number of blade dancers went like this : 36-31-27-22-....
Same thing is happening with druids, and sprites. However I did not lose the same numbers of creatures each day and there were some days when I did lose druids, but no sprites, ... and so on.
It's less noticeable with higher level creatures but I lost a green dragon that way too.
As soon as I gave that army to a sylvan hero, the dying stopped...
So I'm now building up the inferno town on that map instead of the sylvan ones.
Can anybody confirm that 'feature' ? what do you think about it ?
I find it harsh to lose very expensive dragons like that
Maybe my Agrael Hero was just hungry ...