You create a cloud of grey dunamis energy around creature within range. Make a ranged spell attack against the target. On a hit, the creature is touched by the moment of its death, it takes 1d8 necrotic damage, and its speed is reduced by 10 feet until the start of your next turn.

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