I haven't gotten it yet. But due to RNG abuse, I can get it (kind of) easily.
It won't have the pentagon, but it should still work for Free Battles in Battle Spot on XY, just not Rating Battles. I can have it for you tomorrow.
Just got Shiny Cobalion, it's Timid (I wanted a special attacker), and it's IVs are 30/xx/29/31/31/31. Do you want them? I can give you all three no problem.
Also, you have Pokemon X right? Apparently, you can use non-Pentagon Pokemon in Battle Spot in XY, just not in ORAS. So do you still want the Latios and Kyurem, because I can easily RNG them and have them for you tomorrow.
I actually already got Virizion and Terrakion Shiny with good IVs, and I'll be adding them to my shop as soon as I get a good Shiny Cobalion, which will hopefully be soon.