Celeste’s Starry Glare

Your eyes start glowing with a glittery shine. A creature you can see within range gets an eery feeling. The target must make an Intelligence saving throw. On a failed save, the target takes 3d6 psychic damage, and it can’t take a reaction until the end of its next turn. Moreover, the next time that creature is forced to make a saving throw you roll a 1d4 and subtract the result from the saving throw. On a successful save, the target takes half as much damage and suffers none of the spell’s other effects. 

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.