Ensnare

Call forth your magic from the Shadowfell and restrain any creature within a 10ft radius in shadowy tendrils. The creature must make a Strength saving throw, or be restrained and take 1d6 necrotic damage. Target has disadvantage on the saving throw if they're making it in the dark. A creature restrained this way is considered grappled, and any Vampire can spend an action to Draw Blood.