Welp, this has been a long time coming! I've been slowly commissioning the magnificent Sir-Dancalot on FA to draw all of the cute mythical pokemon (so in other words, no Deoxys, Genesect, Hoopa Unbound, etc) shiny, and in messy diapers. Obviously these are all posted with his permission. Finally, bask in all their squishy glory!
So, in order, we have:
Mew in a disposable Celebi in a pull-up Jirachi in a goodnite Manaphy in a swim diaper Phione in a pull-up (not sure if it actually counts as a mythical pokemon, but here it is) Land Shaymin in a disposable Sky Shaymin in both cloth and disposable Victini in a pull-up Ordinary Keldeo in a swim diaper Resolute Keldeo in a waterlogged disposable Aria Meloetta in both cloth and disposable Pirouette Meloetta in a pull-up Diancie in a disposable Mega Diancie in both cloth and disposable Confined Hoopa in a waterlogged disposable (def not doing Unbound Hoopa) Magearna in both cloth and Disposable Marshadow in a goodnite; includes their regular form and their Zenith form (the one they get when they use their Z-move).
Note that for Megearna, I only have them in their (currently unreleased in the games) Original Color form (shiny, of course), as opposed to also having their shiny regular form. I'll probably have a pic done of their regular form eventually, but it won't look that distinct from their normal palette. For Marshadow (regular form), the shiny palette is *very* similar to the regular one (only diff is the purple topknot on their head instead of the green one that the regular one has), but I figured that was a distinct enough difference.
Anyway, enjoy this awesome collection, birthed from a marriage of Sir-Dancalot's talent, and my money.