Fire Effect Switch

Hi, I currently need help with a project that I am currently working on. I’m trying to accomplish an effect where you can turn into a human torch. I’ve seen a game like this before a while back but I’m not sure where I could find that sort of Roblox Technology. An effect where pretty much you just either press a button on your keyboard or a button on the screen and turn into the character. Does anyone know where I can find this or who can maybe help me out?
This is pretty much what I’m trying to accomplish, and maybe not a gradual fire consumes body effect, but perhaps instantaneously:!.gif/revision/latest?cb=20190228003512
Thank’s in advance.