Soulfire

              A Soulfire is a powerful and deadly flame that is the soul of a demon; a parasite. It burns inside the body, uncontrollably, and strongly. The world they live in, Aurama, is unlike ours; there is no sense of time.  The Soulfire of Ego was trapped in a sycamore tree, the fruit was that of balls of fire. The Soulfire was there due to treason, and a crime that went against many laws in Aurama. He was put there till death, but someone just happened to come by.  When a Soulfire goes into a body by force. The body will have a hard time to remain stable, the Soulfire must find something to use to hold some of their power back, something their people have touched and blessed. If it doesn't stabilize in time the body becomes a walking flame and loses control, or will die. The body will show cracks in the skin and a hole in the chest, or this hole can be located anywhere, but it has been mostly seen in the chest. Now a Soulfire can be summoned willingly by a host that is performing a ritual of some sort. The host will carve a symbol onto their forehead, chest or neck. That symbol will be what binds them together and gives the Soulfire stability. Though the cracks will still remain on the body. Depending on whether or not the Soulfire was put in forcefully or not is how their bodies are. If not put in forcefully they will seem more Human-like, but if done by force they will be Demon-like with horns and a tail. Every Soulfire does burst into flames every once in a while. Some have triggers, others just do it when they are making headway in battle. No one can control the Soulfire, not even the Host. The Soulfire if summoned will heed warnings and listen, but will not let them take control. If done by force.... The host is already dead and it is just the Soulfire in the body.