((Oh no you didn't. I vote against sealing Yaven'Gan in anything. Not let him perform any actions next turn; acceptable. No actions ever; no.
Meanwhile, back on the surface of primordia))
Insurgo was pleased, for his citadel was inhabited again. In it’s ruined halls, the Corrupted eat, slept, and brewed.
Insurgo had nothing better to do, so he went forth to the Corrupted, and spoke unto them:
“My children, your home lies in ruins. But come, we shall repair it.”
So the Corrupted planned, and felled the overgrown tevorim plants, and made of them ladders and platforms against the fortresses walls, and hauled great chunks of stone into position. When a stone was put in place, Insurgo joined it to the whole once more. The wrecked interior was carefully reassembled in the same way. After years of work, the citadel filled the cavern with a red glow once more, and Corrupted strode through its interior. Teachers worked on deciphering texts in the uncovered libraries; brewers were delighted to find that some rooms had been designed as distilleries. Everyone was given bedrooms; the tribal peoples were delighted at this luxury.
Only the rear of the citadel had been modified in the repairs; once a simple gate, now a three-layered defensive structure, with extra gems taken from all over the structure.
Insurgo saw the work, and it was good. He spoke unto the corrupted also; “I will take residence within my citadel now, but you may act as you will. However, I have some advice: do not travel down to the underworld; the gemchildren, whilst good people at heart, are ruled by a cruel leader, and will attack you on sight. If I were you, I would indeed prepare for war, for Zyenild may not appreciate my retaking of this place.”
((1PP: Repair the citadel; same as it was before someone threw magic at it. No PP left now.))