Nunax's dark hair whipped into the air, flying as dense tendrils everywhere possible.
Her Amras burst outward with a jarring flash of light and then the tiled space was changed in a series of ways.
Skullius had sensed her intent before she could actualise it. Thus, he expended a lot of Amras to strengthen the protection around the spectators. If he hadn't done so, they would have been caught in it, instantly.
A Fated Reef was formed just as Nunax's Amras flew out, engulfing everything.
And indeed, a Fated Reef was a naturally occurring phenomenon within the Broader Existences of Deities. It could be used as a platform for creating territories that a Deity could control, other than worlds. Many Deities had Fated Reefs in the great void where they, and perhaps their followers could rest and find refuge against the terrors of the void and other standard enemies.
