[Endoperez]

Actually, you can reference a custom spell via #onebattlespell, but you have to do it via the spell number. The first new spell created in mods will be 829, the next 830 etc. Your mod will only work if it's the only mod to add new spells, or the first read mod that does that.

The order the mods are read changes from installation to installation, and seems to be dependent on the order the mods were put into your Dominions folder, and possibly alphabetical order as well. Because it probably won't work for others, it's simpler to just say that your mod won't work with mods that use custom spells - like Conceptual Balance, or any mod that uses national summons.

So yeah, boo.