Pet Enderdragon has been re-enabled.
Many users bought it in the past and it's been gone for years. It's now in [VERY BETA] stage (and this warning is pasted onto the store before buying!!!). We don't have an ETA on when we will get it working right, in fact we just might use a different plugin for dragons completely in the future, but for now here's what we got: (works best when riding)