A black beam of enervating energy springs from your finger toward a creature within range. Make a spell attack against the target. On a hit, the target is weakened until the spell ends. At the end of each of the target's turns, it can make a Constitution saving throw ending the spell on a success.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can target one additional creature for each slot level above 2nd. The creatures must be within 30 feet of each other when you target them.