Valley of Seers

Valley of Seers is the 4th, 13th and 15th of.

Overview
When you visit there the first time, you are greeted by Cia who, in turn, summons Manhandla to finish Link, Impa, Sheik and Lana off. She takes the Triforce of Courage from Link and the Triforce of Wisdom from Sheik, using it to create a Gate of Souls in three eras of time:,  and SS undefined. When you visit there for the second time, you find Cia using all of her strength to power up Volga. After you defeat Volga, you focus on Cia. Defeating Cia will reward you with a cut-scene where Cia passes the Triforce of Power down to Lana. When you visit for the final time (playing as Ganondorf), you're objective is to find and defeat Lana, who tries to clone herself to escape. Defeating her will reward you with the Triforce of Power.