Entropy is the art of manipulating fate and luck. It is considered to be both powerful and dangerous, even by its practitioners. While most entropic mages will disregard the notion that fate has a will, many will agree that toying with it generally has repercussions. While many confuse Binders as Entropists, they are in fact two distinct entities. Binders operate on instinct, which is not entirely under their control while Entropists always actively decide how their power manifests.
Entropic mages, or fate spinners as many cultures call them, influence the probability of events, making things more or less likely to happen. An entropic mage could see that an enemy swordsman is rushing towards them, ready to stab them. Seeing this as an unfavorable series of events, the mage could try to make it less likely that the sword would hit them, throwing their will against that of fate to try and influence the event. Much like Evocation, Entropy is accomplished on a relatively short timescale.
When a fate spinner uses their craft, there is usually a slight visual or audio queue such as the spinner's finger plucking a string or a gentle tinkling in the air as if a harp was played. Most are unaware of what these signs mean, but entropists should beware those who can recognize the craft.
Entropic magic is inherently unable to accomplish a task. It can make things more or less likely to happen, but never directly cause something to happen. In addition to this, entropy requires a direct line of sight, proximity to the target, and has a very short duration. In short, though entropic mages are able to alter probability to a large extent, fate has a system of checks and balances against them. Fate mages often find themselves hitting a string of 'bad luck' following significant alterations.