There is one unspoken rule within the walls of The Equestria Trainers’ Society: The dominant must dominate. Every official member, every trainer, every hunter, must always present themselves as an unconquerable force of will, and never allow anypony to treat them like one of the slaves. On occasion, a slave might be allowed to join in on the training or tormenting another slave, but no slave owner shall ever reduce themselves to the role of a submissive. This unspoken requirement is shared by all in The Society, and and is never broken… except by one.
 
The only pony to ever play both roles is, ironically enough, the club’s very own head mistress, the funder and organizer of its illegal slave ring, Schorl Tourmaline. The crystal unicorn mare, despite being one of the most terrifying and sadistic ponies in the organization, often allows other members who have displayed their own penchant for enforcing their will over others the chance to have their way with her as a reward. During these private sessions, she sets no rules of engagement when it comes to fulfilling her invited guest’s desires, handing herself over completely for short periods of time.
 
And as one might assume, those given such an offer take it up with glee, and hold nothing back. They push the mare to her limits and beyond, using every cruel act they can think of on her, in both sexual and purely physical forms of torment. They do this not only to let loose their inner demons and gain physical pleasure, but in attempt to break the will of the head mistress once and for all, in hopes that they might gain some form of permanent power over her.
 
With nothing barred save from maiming and or attempting to kill the crystal, her minotaur bodyguard on watch just in case, and a time limit set, the methods inflicted on Schorl have created a long list. Aphrodisiacs, edging, humiliation, hour long sessions of induced non-stop orgasms, asphyxiation, waterboarding, electro stimulus, whipping, paddling, putting a flame to her skin, needles, sensory deprivation, painful acts of bondage that contort her body, and injecting magic into her horn to excruciating capacity until the energy is released in a massive, mind eroding horngasm, are just the tip of the iceberg when it comes to what she has endured.
 
Many times it has left the mare a mess, incapable of speaking coherent words by the end due to the overload of stimuli she receives, and those who made her that way left the room claiming victory over the mare, believing that they had decimated her will. Yet, their tune always changes when they see her shortly after, sometimes no more than thirty minutes, looking no worse for the wear, and even refreshed after the sexual brutality she received. Even at times when a pony thought for sure they left a mark that would leave a scar, they would later find that her body bore no marks it didn’t have prior to the session.
 
In the end, no pony ever truly gained any ground with the crystal mare, either physically or mentally, and at best received a compliment from the mare for entertaining her. It is for this reason that the members have learned not to mess with the crystal mare, who could receive the worst tortures imaginable and come out the other end unphased, as they got a good laugh whenever some new member heads off to Schorl’s chambers with the intent of taming the her. Still, there are those who will take up her offer every time, finding her resilience just as amusing as she finds their cruelty. For those few given the rare chance of another night to treat the leader of The Society like a plaything, it matters not the end result, but the fun they have in between.