One thing was certain, their life was guaranteed with their current ability; Kluster is the King of the entire human kingdom and will make sure that Yuriel and Isaac succeed in their life.
This decision was hard and obviously not the one that Gremory wanted to take, but for him, all the evil that happens to the surrounding people is always his fault somehow. The effect of evil, rotting everything he touches.
Even though this was not necessarily true, he couldn't think otherwise after everything that happened, and Layren specifically asked to make sure they have a great life.
So the plans have to change, Nature liking or not. The Oracle would continue the plan even without Gremory, there was no doubt about that, and he doesn't have the power to face her right now.
