Which God?
My first reaction would be that they summon, permit it to enter our world, and are the first ones to die as the entity/god just doesn't care.
Inspiration could be found in End of the world: wrath of the gods, or Fate of Cthulhu.
Or the original followers become their ennemies to be the first to summon the gods.
The sparkrunners will do an entry in tonight's game 🙂