Deteriorate

You move your hand in a clockwise motion towards an enemy and say your arcane phrase. The targeted creature must make a Constitution Saving throw. On a failed save the target takes 3d12 necrotic damage and is suddenly aged to the point of being elderly, until the start of their next turn they gain three levels of exhaustion. On a success they take half damage and suffer no points of exhaustion as they resist the effects of the aging.