Common Ground

You channel a surge of electrical energy, forming a grounded magical link between you and a creature you are grappling. If the grappled creature breaks free, the magic is released with a shocking burst.

When you cast this spell, choose one creature you are currently grappling. The chosen creature is marked by a magical tether. While the spell is active, if the marked creature breaks free from the grapple or is forcibly released, it immediately takes 3d8 lightning damage.

The spell ends if the concentration is broken, the grapple is released, or the duration expires.

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.