Eskil was the guardian of the White Woods, the great-great-grandson of Archmage Xarl Angel-Keeper and Eska from Golthonor, and the adopted son of the wizard that corrupted the angel Trine.
He summoned the Serra Angel Rahel to fight Trine and free northern Corondor. When Trine's blood splashed him, he was blinded, his skin and hair were bleached white, and he ascended. He thereafter styled himself "Eskil the White."
As a planeswalker, he saved the people of Golthonor during the Blackblade–Dihada War. He settled in, and became the guardian of, the White Woods, where he was Mangara's mentor.