Medivh knew what mattered most and didn't seize the opportunity to expand his territory by conquering more levels of the Purgatory World.
The top threat right now was the Seven Deadly Sins of the Primal Abyss.
The fact that the Seven Deadly Sins had made no major moves recently didn't mean the threat posed by the Abyssal Demons could be ignored.
Acting on impulse and provoking the Purgatory Demons and the All Spirits of the Star Sea would put the Light Alliance at a disadvantage.
If the Purgatory Demons and the All Spirits of the Star Sea joined forces with the Primal Abyss to attack the Light Alliance, the alliance would be in a very difficult position.
Even if the Seven Deadly Sins looked down on the Purgatory Demons and the All Spirits of the Star Sea and refused to work with them, letting the Wrynn Family fight those two factions would still be unwise.
Medivh hadn't forgotten the Three Sources of Evil—Tzeentch, Khorne, and Nurgle—or the Necromancer Council.
If the Purgatory Demons and the All Spirits of the Star Sea were badly weakened, the Three Sources of Evil and the Necromancer Council would rise in their wake, growing stronger by devouring them.
Then the Wrynn Family would face even more troublesome enemies, even harder to wipe out. It would be a net loss.
It was a good choice to let the Purgatory Demons and the All Spirits of the Star Sea focus all their strength on suppressing the Three Sources of Evil and the Necromancer Council.
Medivh only needed to keep a close eye on the Primal Abyss.
The less the Primal Abyss did, the more it suggested that the Seven Deadly Sins were preparing a major move.
The longer the Primal Abyss had to grow and build up