Add a way to undo polymorph

[Lady Birb]

I feel like bringing this thread back up on a kneejerk because polymorph still is an instantaneous and irreversible way to incapacitate someone. In the past few months after it was added every round that has a wizard at least one of them is packing it. As mentioned in other wizard complaint threads, it is basically pre-nerf shocking touch and needs a way to be countered or reversed.