"Wrixia? But why?"
Hex didn't expect the one known as the Oldest One to be the one to influence Medina. Didn't the cat say the tree helped absorb and, as such, contain the Divinities from destroying all life?
For power. What else?
"I still don't get it. The Oldest One is at the Taboo Stage, it controls the center of the world, has the most variety of lifeforms…what power does it seek?"
Power, no matter how much one has, never seems enough. You believe the Old One has enough power? What about the Godking? Didn't he have enough power? He helped create everything and ruled everything within creation, yet sought power. Power of eternity. The Gods, the Divine Lord, the Taboos, all seek that same thing. Eternal power.
"So they are afraid to die. Even with a life spanning Ages, they wish to exist through Time."