|Spoilers from "Voice of the Gods"|
Emerahl uncovers the fact that voids are created when a god dies, and that immortals can create voids by removing the magic from an area. She also uncovers that you can kill gods by trapping them within a circular void created by six immortals taking magic all at the same time. The magic which is left in the middle can then be used up and ending the life of the god within. However if this is not done, slowly magic will return and eventually the void will disappear.