Carbink's great, but if you're going for obscure, try Eviolite Rhydon. Even with minimal defense EVs, its defense gets up to 210 with Eviolite. Combine that with a high HP stat, and it can take Brave Birds and Flare Blitzes all day. Then, with its 200 attack, OHKO Talonflame with a rock move of your choice. Give it Earthquake and some coverage moves like Hammer Arm, Megahorn, or Ice Fang (egg move) to round out the set. Consider breeding Curse onto it to further improve Rhydon's attack and defense. (Note that these stats are for level 50s)
I'm gonna test this out on Talonflame tomorrow, but this should be an amazing counter.