Residual Infection

The Residual Infection is an umbrella term for both it's cause, and the many diverse and profound effects it has on Celsarian species. Originating in ((YEAR)), the Residual Infection is localised around Espeira and wreaks havoc with it's native creatures, whom except for rare instances of immunity are powerless to avoid its grasp.

Causes
The Residual Infection is linked to transient deep - by far the least researched aspect of deep. During the War of the Vestige, Abram Belrand cast the Last Spell releasing transient deep across the continent. Transient deep is highly volatile and potent when interacting with living things.

Effects
A large amount of transient deep will outright kill an organism. If they survive a dose, however, transient deep manifests itself as aberrant, sometimes rather macabre distortions in the indigenous species, known as the Residual Infection. These changes cannot be concisely listed - the effects are vastly different depending on the species infected, and those observed are not an exhaustive list of all the possible transformations in the plants an animals of Espeira.

Immunity
Immunity is known to exist, though the reasons for it are not understood whatsoever. Immunity is phenomenally rare, and cannot be tested for. It is impossible to tell whether any given being not displaying the Residual Infection is immune or has simply been lucky enough to have not been affected by to that point. If the latter is true, there is every chance that they will still be affected.