Background Pony #15BF
That’s good you wrote in your description that it’s a crystal hippogryph because otherwise it wouldn’t be noticeable at all. Some more sparkly mane and tail would help.
I hope it’s somewhat resembles a “Crystal” Hippogriff xD with the mane and the crystal crest I tried.
Also, I kid you not, the picture on Bulbapedia has brown eyes xD
Articuno (c) Nintendo, Pokemon
MLPFIM (c) Hasbro