When it comes to handling souls, Rod is already very familiar.
The Soul Altar can easily separate most materials contained within a soul, and for those difficult to separate, like the Source, the Obelisk can perform Source Stripping.
What remains in the end is a pure soul.
If it isn't at King Level, generally it would be directly sacrificed, broken down into various soul resources for use in the Dream Realm.
If it is at King Level, it is preserved within the Crystal Wall, awaiting the ignition of the next Star.
As for the [Ultimate Dominator's Soul], it's the soul with the most additional material Rod has ever seen, containing 3 portions of Strong Source, 11 portions of Source, Dream Fragments, Source Material, Time Heart, Time Stone, and Source Tree Tentacles.
It's quite a treasure.
