Elemental being. A creature of pure elements. They possessed immense elemental power.
Eilan became a host for one such being. Due to Eilan's unique constitution, he was compatible with the elemental being, which also prevented him from succumbing entirely to his illness. If the elemental being were separated from him, Eilan would die, as their bodies had fused into one.
Using data from the witch's experiments, they planned to integrate the elemental being controlling Eilan into the Walpurgis Night, similar to how experimental subjects were bound to the Dream Palace.
In this way, the elemental being would gain the power to control the entire land and harness all the Dream Power that sustains this place. He would merge with the core of Walpurgis Night, gaining the strength to end this game.
He would become the true ruler of Walpurgis Night and save the countless lives hanging by a thread.