While certain physical traits of Mastemyr are permanent, this Mortal Born can knowingly enhance his body to that of his feline counterparts and eventually become one. These differences could appear subtly, such as changing his eyes to cat-like slits for enhanced night vision or sharpening his claws while rough pads harden his palms for added silence and traction. Mastemyr can push these boundaries, fully utilizing this ability to transform his body into a feline of his choice at the risk of losing his mentality. Mastemyr cannot push past the physical limitations of either form and transforming is exceptionally painful. Because of this, he often favors a simple house cat for its simplicity and familiarity. Mastemyr may pick only three feline forms a season. Disease, fatigue and injury also transfer with him.

The longer he mimics a feline, the more instinctual his mind becomes, with the possibility of leaving him feral when he returns to humanity. If more than a few trials of time have passed as a cat, Mastemyr begins to lose memory of his former self and risk becoming stuck until triggered through physical or emotional shock. Afterward he is not only dangerous and unpredictable, but teetering on the brink of madness, taking anywhere from breaks to entire seasons to recover. In some cases, Mastemyr may never return to who he once was and can lose himself to the imitation.

Current Favored Form: Domestic Short-hair (Black)

Drawn to areas where crises happen often, Mastemyr is capable of feeding off the sensation of crisis in others, giving himself boosts to the event at hand. A collapsing bridge might give him better capability in swimming, or a burning building could create a resistance to smoke inhalation or a tolerance to high temperatures. He may only keep these boosts for a single trial before chaotic poisoning sets in. When this happens, he struggles to maintain and control a form, with situations around him altering in strange and unpredictable ways. Physically, he risks exhaustion from overuse, which could result in loss of consciousness or death. To get rid of these boosts before the negative side effects can kick in, Mastemyr must find someone to pass the crisis too, often tormenting them in the process, as they become fully convinced they are about to experience the originating trauma. Those with higher discipline may resist this ability, although they might have a creeping sensation that something bad is about to happen if nothing else.

Mastemyr lives in a state of a sort permanent sleepwalking, where reality and fantasy mix together in the waking word for the eyes of the MB only. Through touch, the MB can steal bits and pieces of the victim's personal domain in Emea or dream-scape and replace them with its own. The stolen pieces manifest in the waking world for him, allowing the MB to explore the unconscious mind of the victim. The MB will be able to comprehend the extremely vivid fantasy like no other can, allowing the gathering of information and deeper understanding of the victim’s psyche. At will, the MB can draw his victim into the waking delusion, choosing to grant understanding of his visions or not. Stolen pieces from Emean personal domains or dreamscapes last only 15 trials, and the MB must wait a cycle before stealing from the same victim again. Overuse of this ability manifests by a growing difficult to decipher the real from the fantastical - a dangerous consequence depending on who or what he steals from.