Ethereal Energy

Energy exists in three forms: material, conventional, and ethereal. The mass of objects is what's called material energy. This is the most stable form of energy. The term conventional energy refers to a collection of interchangeable forms of energy. Heat, kinetic energy, and gravitational energy are just some examples of this type. The third type is the most mysterious, and latest to be discovered. Ethereal energy can best be thought of as a field permeating reality. This is imperceptible due to exceedingly low reactivity with the other types of energy. Some materials can transmute energy between the other types and ether, most notably izer crystals.   For most materials, the ether in objects is strictly proportional to their mass. The proportion of ethereal energy to units of mass, is the ethereal density of a material. Interestingly, a couple materials have an ethereal density of precisely zero, like air, ice or silver for example. These materials form a type of insulation against the effects of ethereal energy. Other materials can vary the amount of ether in a fixed object, most notably izer. Crudely speaking, this means that mass or conventional energy can be stored into an izer crystal as ether, and later released. Izer crystals do have a preferred ethereal density. An empty izer crystal is volatile and will try to evaporate, (technically transmute,) any mass it comes into contact with.  

Applications

One use of izer crystals, and by extension ethereal energy, is in a battle wand. The wand is simply a silver stick tipped with a depleted izer crystal. Wherever the crystal touches a person, flesh and bone will disappear leaving gaping wounds in its victim. The effectiveness of the wand gradually decreases as the crystal fills up. Battle wand wielding wizards generally carry multiple wands for a single battle. Izer tipped arrows would function just as well, however losing any crystals is too costly for arrows to be viable.   Fire crystals are crystals with an abundance of ethereal energy. These are created through coldburning, the process of burning stable izer crystals on an silver grill. When done right, the fire never produces heat, hence the name. A filled fire crystal will try to release the heat it was fed as fast as possible. This is widely applicable, from rapidly heating up a pot of water, to heating up a room in winter. The real trick is slowing down the reaction, and preventing fire, by limiting contact to non-insulating materials. A fire crystal can be ground up to produce fire dust. This is the secret behind fire breathing. To perform the trick, a wizard sprinkles fire dust on their silver gloves, and blows the powder into the air, igniting it with their breath. This trick also has some application in close combat, and indeed a wizard would make for a fearsome foe, but is mostly used in demonstrations of power.   Healing crystals can also be used to deposit skin over a shallow wound. To prepare healing crystals, start with crystals in equilibrium. Coldburn the crystals in silver pot with a mixture of blood, skin and flesh, preferably from the wounded subject. Throughout boiling, the mixture should remain cold, when the fire starts giving off heat the crystals are filled. If the contents of the pot transmute before the fire feels hot, immediately remove the izer from the flame. Depending on how much heat these crystals have absorbed, they might burn the patient. In any case, successfully filled healing crystals should be applied to the wound gently. Variants of this technique exist for all types of damaged tissue, including bone, muscle. Even limb transplantation is possible, however incredibly difficult.