User blog comment:B214/Question & Answers 5/@comment-108.224.166.119-20150702164846/@comment-24502975-20150706002259

I don't remember it being directly mentioned, but to me it felt like his use of Dragonification improved if you compare v14 and v18. Then there's the v19 thing with him learning how to use his body better, but that only directly mentions the wings so it's just speculation.