I don't want to give up just yet though. If the 3ds is an issue, how about the Nintendo Switch? I may not have a switch myself, but that doesn't mean I have no options. Fortunately we have more than a few trusted friends here on the forum that use both 3ds and the Nintendo Switch. I could trade the Wartortle to a mutual friend like maybe Jo or Shawn (both whom I have traded shinies with before) and they could give it to you for me. If a switch would work okay, I'd be happy to do this extra step and send you Wartortle by a proxy if you have any trade capabilities. Let me know!