He had created the Helm of Domination so he could temporarily leave the battlefield at a critical moment, allowing Arthas to take his place and plunge into darkness to fight the Seven Virtues.
You capture one of mine, I seal away one of yours. The Seven Deadly Sins and the Seven Virtues grew fewer in number with every battle.
Medivh would emerge at the final moment, capture the last Dark Avatar and Avatar of Light, then take the Seven Deadly Sins and the Seven Virtues to meet the Goddess of Light, Athena, and carry out the final plan.
"There are only seven layers of the Dark Domain World left. If they still don't retreat, we'll decide the victor ahead of schedule!"
Another hundred years passed in the blink of an eye. Under the Light Alliance's all-out assault, only the final seven layers remained of the thirty-six Dark Domain Worlds, and the Seven Deadly Sins would be driven back to the Primal Abyss.
After fighting to this stage, both the Seven Virtues and the Seven Deadly Sins had suffered serious injuries and were in poor condition.
The Seven Deadly Sins could have abandoned the Dark Domain Worlds, retreated to their home ground to recover, and then fought the Light Alliance in a decisive battle.
The Seven Virtues realized that the Seven Deadly Sins had no intention of retreating. It seemed they wanted to fight the final battle in the last seven Dark Domain Worlds.
If the Seven Deadly Sins wouldn't retreat, all the better. They would fight now and decide the victor.
The Seven Virtues split up, each leading an army to attack one layer of the Purgatory World.
One force was exceptionally strong and well-equipped. It was the main force tasked with defeating and capturing the Dark Avatar.
The other