It's the final evolution of Sandile, which you find in the Tanzan mountains (main part not any of the side caves). It is a Ground/Dark type. You will usually find them around lvl 23 or so. Which means its not too long to get it up to it's evolution at 29 but then there is the grind to 40 for the final evolution. It usually has a good atk stat with decent health and speed.