Enact a new rule with the following text:

The Dark Legions of the Abyss are preparing to invade the Heavens, but first they must invade the Earth. Often, if it has not been done in the last 24 hours, any Deity may build a Dark Temple in any city. A Dark Temple counts as a Temple to the current Incarnation of the Other, but instead of yielding Resident Worshippers of the Other’s Pantheon, it yields Resident Worshippers of the Dark Legions.

If all Cities have the Dark Legions as their Dominant Pantheon, then the Other may Declare Victory.

If all Dark Temples have been destroyed, and more than half of all Cities have the Godhead’s Pantheon as their Dominant Pantheon, then the Godhead may declare Victory.

Create a Dark Temple in every City.