Please add a way to add to Each Town-Type a godly creature, which would be summoned on siege if city is capital (has built capital). Of course there should be switch on/off for the feature. Idea taken from Disciples II, and already incorporated in my ERA based mod.
If you incorporate this as an option, you may also add summonning-on-siege for other building and other creatures.
Note: Creature count should be based on day-of-game. I used for my mod those math:
but later it should allow any math based on “day” variable