I say call it a phantom potion. You are the first to publicly produce the snake and tell what made it so in my eyes you should name it whatever you want to. Due to the fact that phantoms and mystics are more or less the same snake (even though others argue against it) putting Phantom Potion would fit it perfectly. Just my 2 cents. Phantoms and Mystics do almost the same thing so if I were you I would call it a Phantom Potion and I would run with that name. Thanks
Joe Ellis