Death's Grasp

You raise your hand toward a creature of Large or smaller size. Dark, gravitational energies swirl around them. You force them to make a Strength Saving Throw, on a failure the dark energies grasp tightly around them and pull them towards you. They stop within 5 feet of you. You can then use your reaction to make a melee weapon attack with advantage against the creature, any of your allies within 5 feet of the creature may use their reactions to attack also. Upon a success, the spell does nothing.

At higher levels: Upon casting this spell with a spell slot of 4th level or higher you are able to increase the size category of the creature you can pull. At 4th huge, at 6th gargantuan and at 8th colossal. Also granting advantage to all other allies at 5th level casting.