Element
There are 4 primary elements: earth, air, fire, and water that effect the Aetheric energies of Arkrath such as Attuned crystals, aether powered technology, and, magic throughout the realm. However, research has managed to produce synthetic aether crystals and thus two man-made elements have been created: Plant and Lightning.
These four elements form a circle with one element beating another: Water -> Fire -> Air -> Earth -> Water