Is this OC too overpowered?
I came up with a new OC idea, basically, some carved stones with some burning ashes inside the middle one (torso), it would work because the forever-burning ashes of my old body keep the stones close to each other and make me able to move. I'd be basically immune to most spells and attacks but swimming would be basically a death sentence for me, I'd also have a very low stealth and speed (could depend on what materials I use for the body). I also thought that maybe, if some of my ashes are put inside of a closable item, and they get lit, I could basically come back to life, maybe even have different characteristics for different materials used. Is this too overpowered?
(Also note that I have never played DnD before and have absolutely no idea if I can even make an OC that isn't one of the "known" races) Tell me if you have any suggestions or questions:)