Nightfall Cataclysm

Drop crushing night across the emanation. Creatures of your choice in the area must make a WIS save, taking 16d10 necrotic or psychic damage and becoming blinded and frightened until the start of your next turn on a failed save, or half damage only on a success.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.