Weight of Ages

You create an aura of despair by conjuring a piece of the Shadowfell's essence. Choose a point in space you can see. A 20 foot radius aura springs into existence centered on the point you chose. Any creature that starts its turn within the aura must make a Wisdom saving throw or take disadvantage on all saving throws, ability checks, and attack rolls while in the aura. The aura's area is difficult terrain for any creature that fails the saving throw.