Types of Magic
According to Sizemore Rockwell's explanation of Erfworld magic to Parson Gotti, there are eight major classes of magic, each defined by one of the eight combinations (either present or absent) of the elements "Life," "Motion," and "Matter":
These major classes are:
Each of these classes is divided into three types, each of which is aligned on one of the three axes "Erf," "Fate," and "Numbers":
Parson is skeptical of whether this represents the real theoretical basis of Erfworld magic (it reminds him of "that crap about the four basic elements that people believed for centuries just because Aristotle said it"), but it is the best available systematic description.
See also the Mechanics section on Natural Magic
Natural Magic describes powers that are not initiated by a caster, but are rather an intrinsic ability of Erfworld units, such as flight or digging. For example, a scout unit's ability to report information (such as a Doombat's ability to relay its sightings to Vinny) is a function of Natural Thinkamancy.
Known Magic Items
Stanley the Tool and his main subordinates (Wanda Firebaugh, Sizemore Rockwell, and Parson Gotti) carry eyebooks. They resemble ordinary hardback books, of variable size (see below). They were created by Stanley's trio of linked casters, using the three disciplines of Eyemancy (Lookamancy, Thinkamancy, and Foolamancy). Once created, they function under their own power, and continued to do so after the trio was unlinked.
An eyebook is able to transcribe messages from the user's thoughts and send them to another user's Eyebook. Parson also uses his to keep a journal (called a "Klog", derived from "book log", in the same way that a real-world term "blog" is derived from "web log"). Eyebooks also have the ability to change size, conveniently shrinking to be easily carried and growing to a size suitable for Parson.
The name is a pun on the iBook type of laptop computer.
Prince Ansom has a flying carpet. It resembles a conventional carpet, either rolled up (which is Ansom's usual style of riding) or spread out. The type of magic it uses has not been specified.
The carpet is able to carry at least two riders.
Ansom has a pair of message hats. They resemble fancy-dress top hats. Presumably, they use Hat Magic, but this has not been specified.
A written message may be placed into the sending hat and transmitted to the receiving hat (which rumbles to alert the owner). These particular hats only work in one direction; however, other hats capable of two-way communication may exist. (Upon being given the sending hat of the pair, Jillian Zamussels asked if it was "dual use" and was told that it was "abjuration only". This appears to imply that the former term describes a two-way hat and the latter describes a one-way sending hat.)