Worldtree
Oefa says that a powerful undead necromancer released the ghouls and the soul eater on her so it could continue to the holy site, a worldtree like the one on mount ascension.
We are in pursuit following the tracks of additional ghouls plus skeletal footprints (presumably the necromancer)
Reaching the grove, we find that it as been corrupted by the undead energies and Ty darkness surrounding us.
Goblinoid skeletons have been pinned to various trees by ice spears and the heart tree was also pierced by similar spears. As we approached, the goblin pulled themselves from their trees and the heart tree lurched into a parody of false life.
We have dispatched this threat and Baern has planted the tree which is weakened by the energies of the shadowfell. Baern aligned the tree to the Mother's bore civilized aspects.
We have bolstered the tree with as much energy as we can.
There is still a necromancer in the vicinity