Despair

You form a large, 30-foot diameter sphere of black energy on a point you can see within range. Any creature within that sphere must make a Wisdom saving throw or suffer 1 point of Exhaustion. This spell cannot reduce a creatures exhaustion below the 3rd level.

For every level of spell slot used to cast this spell beyond 1st, the sphere expands another 10 feet. If you cast this spell at 4th level or higher, affected creatures suffer an additional point of Exhaustion.