The war between the Four Great Malignancies, the Goblin Warlords, the Purgatory Demons, and the All Spirits of the Star Sea was none of Medivh's concern.
After the Seven Deadly Sins awoke, the potential threat posed by the Three Sources of Evil dropped significantly.
The Purgatory Demons and the All Spirits of the Star Sea no longer needed the Three Sources of Evil to restrain the Light Alliance. They stopped nurturing evil and turned against the Three Sources of Evil instead.
The Seven Deadly Sins considered themselves the true heirs of the Source of Darkness. They would never let the Three Sources of Evil grow strong enough to replace them.
The Light Alliance certainly wouldn't let the Three Sources of Evil run rampant if it had the time to intervene.
If the Three Sources of Evil showed signs of getting out of control, the Seven Deadly Sins and the Seven Virtues would surely join forces to crush them. They would deal with the outside threat first, then resume the War of Light and Dark.
The War of Light and Dark was a family matter. That was something the Seven Deadly Sins and the Seven Virtues agreed on.
There would be only one supreme ruler in this universe: the Goddess of Light.
The conflict between the Seven Deadly Sins and the Seven Virtues was an inevitable part of maintaining the balance between light and dark. Both sides wanted their own faction to prevail and become the dominant ideology of the Goddess of Light in the future.
Where there was light, there was darkness. Light and dark would always coexist.
"On an occasion like this, we ought to celebrate!"
The attack from the Primal Abyss had been little more than an itch. Medivh hadn't needed to fight in person.
A joyous occasion