Chain Pin

The caster hits a creature and grapples them with a chain of necrotic energy. Make a melee attack against one creature in range. On hit the target takes an additional 1d8 necrotic damage and is grappled against your spell save DC until they break free from the grapple or the caster dispels it.

At higher levels. This spells damage increases by 1d8 at 5th, 11th, and 17th levels.