I am painting a Horde symbol for my son's Christmas gift. I am not a player, but I have most of the symboligy figured out except for one part (well, actually three parts, lol). On the main Horde symbol there are 3 purplr looking things right above the main hooked Horde symbol and below the chains hooked on to the bones arching over the top. So that I know what I am trying to make these things look like in my painting, can someone tell me what these purple things are?

Thanks