Kothraki

The Kothraki are a tiny humanoid race that live beneath the mountains of the Kothrak Wastes. Their economy is heavily based on the mines beneath the mountains, where they get the makings to create the most magnificent and exquisite jewelry, weaponry, and basically anything else that can get shipped overseas. But don't let their shining appearance fool you, as anyone who looks beneath the surface of the riches and vivid bazaars will soon realize the misery of the common folk. Most of the population lives in the dank caves beneath the mountains as miners and craftsmen, barely getting by with the terrible pay and support they get from their overlords. A strange and unexplainable part of their species is that the ones with magical abilities can use them unlimitedly without becoming corrupt, with the exeption of not being able to cast spells on oneself or any other living being. The way their folk have been able to work around this is through releasing the energy into magical batteries, what the call Grungi Catalysts. With this invention they are able to power many otherwise impossible mechanical contraptions such as gargantuan city guard made of stone, as well as the ships that they use to cross the distances of the desert quickly.