A Sadly underappreciated field of Magic. Spells of this tree can effect the way a person perceives the world around them, or even themselves. Though not deadly on it's own this field of magic can be coupled with others to make for deadly combinations.
Illusionary Arts: From small doves, to detailed environments the user can for visions and sensations into their target's mind. Most mages consider this realm of magic to be parlor tricks rather than a real field of magic. However while most mages strive to create their own dimensions and creatures, and Illusionist can whip up anything with little effort at all.
Memory Manipulation: Far more feared amongst mages than it's sister tree, this Field of magic is just on the cusp of being taboo in the magical world. Mages of this tree can manipulate the way people perceive the past. This makes them capable, of erasing or even creating new memories. They also have the ability to read through the memories of others.
While the memory of a spell can never truly be erased from a mages mind. (Due to their magic crest.) It can be suppressed for a time. Mages of this tree always make sure to capitalize on that lapse of concentration.