The end of the Elder Wars. With the final Elder Gods trapped and the Soulless looming in, they did the only thing they could - sharded their essence, creating the mortal races. Particularly heatbreaking as it's narrated from the perspective of Bollikin, the first of the Elders to die.
"I love you, dear Tae," I whispered. "I must leave now."
"I love you too, little friend," said Tae, "but where are you going? When will you be coming back?"
I didn't answer. I couldn't answer. A deep peace filled me. I would join my creations. It would be my last, final gift to them, to join them in their fate. Tae's booming voice was hammering at me but his words became a blur of sound. Other voices were joining his, but they meant nothing to me. I felt the force of my children's love surge within me. But I was helpless to do anything.
My heart breaks for I cannot take you with me, dear Tae.
- Tae's reaction in the next book makes this even worse.
When Bollikin splintered, the scream of Tae shook the entire First World, even driving the Soulless away as they thought we had unleashed some new weapon.