Hydaelyn

You choose a creature you can see within range and they must make a Wisdom saving throw. On a failure, they gain a damage vulnerability to one of the following damage types: bludgeoning, cold, fire, lightning, necrotic, radiant, or thunder. If the creature is immune to the damage type, it instead becomes resistant to the damage type instead. At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, you may enfeeble one additional creature for each slot level above 4th.