Clashing Shadows

You seize momentary control of the shadows of two creatures within range that are 5 feet of each other. Each target must make a Dexterity saving throw. On a failed save, a creature takes 1d4 necrotic damage, as the other target’s shadow lashes out at them. If one of the creatures moves before the beginning of your next turn, both targets must reroll their saving throws or take the damage again, as the shadows lash out once more.

This spell's damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).