Williby's Wupture

You make a slicing motion with your finger, and you immediately break the grapple of the creature grappling you by magically entering their body and exiting them on the opposite side. The creature must make a Constitution saving throw, taking 3d10 necrotic damage on a failed save or half as much damage on a successful one. If the save fails by 5 or more the damage increases to 3d12, the target also can’t regain Hit Points until the end of your next turn.

If cast in response to being swallowed, you exit the triggering creature’s body, regardless of how much damage you deal to it, and fall prone in a space within 10 feet of the triggering creature.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d 10 or 1d12 for each slot level above 2nd.