Sorry, to respond so late. I have been a bit tied up juggling different things, and haven't been able to shiny hunt in awhile. I wanted to respond though, to mention that pawniard is one I don't have, and would enjoy turning into an indigo bisharp. My cupboards are a bit bare right now in gen 6, since I have been playing older games lately, but I have a whole houseful of shiny lillipup, also have an extra ponyta, gabite, wooper, camerupt and electrode if you can use any of those. If so let me know, if not though hold the pawniard, and I'll get back to you when I have some fresh mons in stock to trade.
The dexnav was my favorite shiny hunting method for years, and still might be. I got a lot of my favorite shinies that way. I'm cheering you on your quest for Deerling! I am sure you'll find it. In fact, you probably have it by now. Tell me of your shiny adventures!