The once-empty night sky is filled with astral phenomena known as the Celestial Presence. Each of the Outer Gods has some sign that appears in the air above centers devoted to their worship. The stronger the prayers, the stronger the Presence. In places where many Gods claim hold, the night sky is filled with awe-inspiring show, but it's said nowhere holds a candle to the sky above Hallia, the capital of Calaria. The Host's aurora brightens the sky during the darkest nights, and the rainbow hue can outshine even the suns on days of particularly fervent reverence.