What Gaven and his party need to do now is to preemptively clear any forces in other directions that may react to this, once and for all.
Slay all the undead, extract all the soul power, and leave or destroy low-level undead lords and soul pools at your discretion.
With enemy forces preemptively annihilated, the Plains of Bone's ability to respond will be relatively limited.
Gaven and his party can then concentrate their advantage forces on dealing with enemies from one direction, reducing pressure and increasing the success rate.
During this time, Gaven himself has not been idle.
On one hand, he continues to enhance his combat power. The Shapeshifter's primary ability—Advanced Superstate Transformation—is most compatible with him and easiest to master.
