Nucleo-Aura

An abstract depiction of a Jagaldie's aura as though it was visible to the naked eye.

A Kreature's Nucleo-Aura (typically referred to simply as an Aura) is a kind of biological forcefield emitted by its Nucleus, composed of a network of tiny, intelligent, endosymbiotic extradimensional particles. It is the source of their extraordinary powers.

Properties

A Nucleo-Aura permeates a Kreature's tissues and instantly spikes in response to harmful stimuli, projecting an invisible protective barrier and binding the cells together at a microscopic level, making them impossible to separate. Small amounts of surplus aura particles stored in the nucleus can be transformed into large amounts of bodily tissues, allowing a Kreature to use its aura to regenerate from any injury so long as its nucleus is still intact. As a result, Kreatures are nigh-indestructible, but an aura can still be breached by another aura of equal or greater intensity.

Kreatures possess all manner of seemingly supernatural abilities such as fire breath, eye beams, telekinesis and so on. These powers can be considered expressions of a Kreature's aura, which can warp reality within its own boundaries. It's for this reason that, for example, a plume of flames conjured by a nucleo-aura can breach another while a flamethrower emitting normal fire will fail to do so.

Nucleo-auras behave somewhat like a non-newtonian fluid, reacting with higher intensity the more stimulus is applied. This is to prevent them from constantly spiking in response to collisions with benign phenomena such as raindrops, dust or snowflakes. Therefore auras do not protect Kreatures from the ambient temperature of their environment, and while a conventional missile or bullet may be deflected by an aura, a mosquito bite or a gentle prick from a hypodermic needle may not. Kreatures' auras may become suppressed when they are tranquilized, allowing for nucleus samples to be extracted.

A Kreature and its aura, which is alive in of itself, are considered mutually symbiotic and one cannot survive without the other. When a Kreature dies, its nucleo-aura, having no biological host with which to remain in a corporeal form, collapses and fades away. If a Kreature were to have its aura siphoned out, it would also die, as the aura's reality-warping abilities are essential to the functionality of their bizarre anatomy.