Shadow of war, what is the impact of the Lord of Light mission?

Players will be betrayed by the King of Light, and then the King of Light and Sauron will merge into one big eye. Talion will be resurrected with the Ring of the Rings, and capture the cave to fight Mordor. With the power of the Lord of the Rings, Talion fought Mordor for 60 years to buy time for the Sino-Turkish Coalition forces. After 60 years, Talion was finally corroded by the Lord of the Rings and became a nazgul.