He sees
The Sundering, and AO's fall. In that fall, he sees two godesses, rivals of light and shadow vying for control, striking into one another (Selune and Shar). And in The Sundering when so much was fractured and destroyed, the energy around these two goddesses was enough to merge them. As they stab each other in the heart, their bodies become intertwined. In their place a goddess of balance, neither good nor evil, is formed. Aurora awakens with intense purpose, alone on a shard in the Aether. One eye bright blue, one deep purple. The shards and the stars and night all bend to her will.