Devour

Massive, black, throbbing tentacles erupt from under the victim and attempt to pull them back through where they came from. The victim must be Small or Medium, and must make a Dexterity Savings Throw 13 to wriggle free of their grasp. The tentacles belong to a Grell, and if cut off, never appear again. After cutting off the tentacles, you can get a new Aberration to fill the void and make the spell work again. Doing so would be very difficult, however.