Umbral Grasp

You extend a shadowy hand toward a creature within range. The target must succeed on a Strength saving throw or take 1d8 necrotic damage and have its speed reduced by 10 feet until the end of its next turn.

Cantrip Upgrade. The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).