Came across this question, as well as a few others, while perusing random HSE topics :
Concept of shape-shifting snakes in Hinduism
Do Tantras discuss being a shape-shifter as a supernatural ability type siddhi ? There is quite a bit of folklore with snakes for this, obviously, (all those Naagin tv shows and such.) However, beyond only snakes, I’m curious if shape-shifting as a specific thing is formally discussed in Tantra texts.
I asked a related question here but unfortunately didn’t receive answers : Siddhi Of Assuming Any Form You Wish