The fusion with the Mindscape is something that only the god of telepathy has to go through. But the creation of outer bodies is something that every god with more than three souls can create.
Outer bodies are layers of existence formed by divine energy. One outer body will be created for each extra soul above the three needed to uphold the foundation.
These outer bodies can be used as shells around the god. The shells have to be destroyed before the true body of the god can be harmed. This will drastically increase the difficulty of killing a god.
Each outer body has the same amount of durability as the true body of the god. So a god with 9 extra souls, like Legion, will have to be killed 9 times before their true body can be harmed.
