The Job.

The will of the plane thanked him. Then it broke apart and fused with him. The tiny motes of consciousness that make it up became connected directly to him. He became the child of the plane just like that. There was no light effect or anything. He didn't even feel any different except for the connection to the plane. 

The connection will empower him if it had any power to give. That's still a long time to come. Then there's the feeling that he will share in the fate of the plane good or bad. He can break it off anytime so he has nothing to worry about.

He shook his head in pity. "This plane is too weak."

He didn't know how malnourished the plane was before but now he knows. It is normal for life to die every moment but there's a problem when the death rate is higher than the birth. Zargoth plane has gone beyond that point where there is a problem. It is doomed.