Sorry, I don't have one. I trained a Sand Veil Garchomp, but I can't use it. I'm not in a hurry to find one though, since I don't plan on using it anymore.
Edit: Well not soon anyway.
Luck is also part of the game! I believe you earned the badge! You have a good team. I do recommend you to get a HA Garchomp for your future matches. Kevin Garrett gets to decide whether the badge is valid, but I'll let him know that the ability was not activated and that I have no issues with giving you this badge.
Good game! Officially Garchomp with Sand Veil is not allowed, but I don't think it mattered this time since it wasn't activated. I have to double check with Kevin Garrett to make sure, however! But you have a good team!