Ore o erabe (S02E24)

After completing the final trial, Emilia emerges from the graveyard into a blizzard heavy enough to block her vision. The people of the Sanctuary and the villagers of Arlam huddle together behind a giant wall of ice, created to shield them from the bitter cold by none other than the great spirit who was once contracted to Emilia. When Emilia touches the ice wall, something flows into her from within it. With a nod of acknowledgement to the voice she hears, she finally takes action. (Crunchyroll)