I believe that we will get a Soraka lore update with Kayle and Morgana, but well I did say that we would get a Soraka lore update with WW, Zoe and Akali release so...
But anyway, so far those two quotes are all the lore we have about her:
Kalan knelt, motionless and silent, as he waited for the seer to speak. She was a curious creature, violet-skinned, and with a pearlescent single horn growing from her forehead. Some may have mistaken her for one of his bloodline, the children of the Vastayashai’rei, but any of the kin would know otherwise.
The seer was of a people older even than his ancestors.
When she opened her eyes—those strange, kind, golden-flecked eyes that saw far more than they should—he saw they were tinged with sadness, and his heart sank.
“You are faced with an impossible choice,” she said, her voice as quiet as the rustle of autumn leaves.
“Then tell me what I must do,” said Kalan.
“That is not for me to say. Two paths lie before you, but you can only take one. I warn you, though—both lead to tragedy and sadness.”
Kalan didn’t blink. “Tell me.”
“The first path. You fight the invaders. At the Placidium of Navori, a great battle will be fought. While it will be bloody, you will be victorious. You will be proclaimed a hero. You and your heartlight live in peace for many years. You are happy. And yet, you are destined to outlive both your cubs, who will be taken before their time.”
Kalan took a deep breath. “And the other?” he said.
“You fight alongside the enemy. You never see your heartlight again, nor your children. They call you traitor, and curse your name. Your path is one of darkness, and bitterness, and revilement. You will be hated by your kin, and despised by your invader allies. After they are defeated at the Placidium, you must stand vigil on the isle of Fae’lor, guarding over the place of dreaming. And there you will stay.”
“And my little ones?”
“They live. They prosper. If not in this land, then another. But you will never look upon their faces again, and if you ever deviate from this dark path, they will be lost.”
Kalan nodded, and pushed himself to his feet. Sadness threatened to drag him down, but he suppressed it, pushing it deep inside himself.
As he looked around, taking in the details of the seer’s shrine, he felt that there was something strangely familiar about it… a vague sense that he’d been here before, that he’d felt this awful sense of grief and loss more than once.
He shook his head. To be trapped in this accursed moment forever? Now, that would be a fate far worse than death.
“I am sorry, my child,” said the seer. “It is a terrible choice you must make.”
“No,” said Kalan. “The choice is a simple one.”
