Ciro's Eldritch Shackles

A spectral chain bursts through your chest in pursuit of the designated enemy. When it reaches the target, it spiritually binds around its soul while physically attaching to the body, dealing 3d8 necrotic damage on a failed Dexterity saving throw or half as much on a successful one. At the end of the turn, the binded target must succeed on a Constitution saving throw or have 1d6 + 1 hit points sapped through the tether. Moreover, until the shackles are broken, the target has disadvantage on any attack rolls. A creature affected by the chain can use its action to make a Strength saving throw against your spell save DC to try to brake the chain. If it succeeds, it is no longer considered under the effects of the spell. 

You can use your bonus action to pull on the chain and yank the tethered target 5 feet towards you whilst using the stolen vitality of the creature to restore the hit points of anyone in the vicinity, including yourself.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the spell creates one more chain, deals 1d8 increased necrotic damage and can steal additional 1d4 hit points for each slot level above 3rd. One creature can only be affected by a single tether.