Circle of Depletion

You sap the strength from creatures within a 15-foot radius sphere centered on a point within range that you choose. Each creature in that area must make a Constitution saving throw. A creature takes 5d10 necrotic damage on a failed save and becomes weakened and drained, suffering disadvantage on attack rolls for 1 minute. A creature takes half as much damage and does not suffer disadvantage on a successful save. A creature that failed its saving throw can repeat it at the end of each of its turns, ending the effect on a successful save. This spell has no effect on undead and constructs.

At Higher Levels: When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d10 per slot level higher than 5th.