From publisher blurb: Aether - a small particle in the air that allows light to travel though it - is a wonderful source of energy when gathered together. But it's much more than that: with our new Aether crafting supplement, you can build Aether Resonators (engines that gather aether) and use them to shape super-heated aether into all sorts of weaponry. From aetherial blades to aether-based rifles, this crafting system has it all! This PDF expansion includes 7 specialties and 23 augments. This lightweight crafting system gives you all the tools you need to manipulate aether, one of the most powerful forces in Tephra.