Wild Lock

You touch a living creature that has shapeshifted or been transformed into another living creature. The creature cannot return to its original form. The creature then assumes the alignment and personality of the shape it was in. For instance, if it was in the shape of a raven, it will then act like a real raven instead of another creature taking the form of a raven. If the creature drops to 0 hit points this time, it dies. After it dies, it will return to its original form, still at 0 hit points. Once you have used this spell, you may not use it again until you have completed a long rest.