One thing I really like to be Moddable

[GFSnl]

Maybe, if we get lucky and have another version of dominions 3. And if it's possible at all and not to much work with CoE3 and all....

The one thing I would like the most to be possible, is to have,
#onebattlespell also applied when second shape triggers.

This would allow infinite loops.
Very dangerous, but a very powerful tool for all kinds of chicanery.

Anyway, my 2 cents.

[Foodstamp]

Ah, I had been meaning to test that. Did you try it with polymorph as well? I bet if it doesn't work with second shape, it is not going to work with poly either. The trigger must be the first round of combat and not the first round the unit is present.

[GFSnl]

Haven't tried it with polymorph yet but suspect it won't work.

I also have to test if spells are cast pre battle or actually on the battle field.
For example when you have #onebattlespell Fireball will it actually cast the fireball on the battlefield before combat visualization?

[Foodstamp]

Yeah, my wording is poor. I think the spells happen, then combat begins. This is why you often don't see the animations for the spells.