Cthulhu's Grasp

Choose a creature that you can see within range. The target must succeed on a Strength saving throw or have the Paralyzed condition for the duration. At the end of each of its turns, the target repeats the save, ending the spell on itself on a success. Additionally, the target takes 1d6 Psychic damage every failed saving throw. 

Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 2.