Chi

There is a special form of energy that flows through the realms and infuses its inhabitants. All living beings possess this energy, but a select few have found various ways of harnessing and channeling it, giving form and name to it. The Monks of mainland Astora call it Ki, while those from Shan Dao call it Chi, though the true masters of its power name it Psionics. For the purpose of this article, these are all considered forms of Chi, and apply as such.
As all living creatures possess some form and amount of Chi, all characters that do not gain a form of Chi from another source are considered to possess one Chi point that is fully replenished after each long rest. This Chi does not stack with any form of Chi gained from another class or ability, and a character who possesses multiple different forms of Chi cannot use them interchangeably.

Chi Drain

Though rare, there are ways in which a character can lose their Chi other than through expenditure. While more dangerous for the untrained, who become drained immediately by such effects, those in possession of Chi pools are no less susceptible to these effects. If a character possessing multiple forms of Chi were made to lose Chi, whether by the power of another or through some external effect, they may choose from which pool to lose it. Chi can be reduced to negative values in this way, causing a character to become Chi Disrupted.
A character who's Chi, Ki, or Power points are reduced to negative are chi disrupted. A chi disrupted character cannot naturally recover Chi, Ki, or Power points, nor do they heal hit point damage or recover from Disease or Poison progression tracks from rest or any mundane means (including skills and Extraordinary Abilities. Any Chi abilities which cause hit point healing can instead be used to remove negative Chi, removing one negative Chi point for each point spent on the ability. Restoration, Heal, and other powerful healing magics can also be used to remove negative Chi from a character.
While chi disrupted, characters must make a Will Save (DC determined by the ability that reduced them to negative Chi) each week to prevent from wasting away. After each save attempt, their maximum hit point total is reduced by the total number of times they have failed this save since being disrupted. When reduced to zero maximum hit points, they fall into a coma and any further loss is instead applied as Ability Drain (roll randomly each week and apply all drain for that week to the rolled ability score). If a disrupted creature has all their negative points removed, their maximum hit point total is restored to its normal value (though their current hit points are not recovered).