Nilbog

Nilbogs were goblins afflicted with a strange space-time reversal disease known as Nilbogism. The disease appeared to occur when heavy use of magic strained the fabric of the space-time continuum, leading to some very strange localized events. The disease only affected goblins and was not transmitted by them.

Combat
The nilbog, like all goblins, favored ambushes, dirty tricks, and overwhelming odds to a fair fight.

Nilbog adepts favored spells that fooled or confused their enemies.

Special Defenses
When struck by any attack that would cause harm, the nilbog would actually heal.

A nilbog could only be injured through the use of curative magic. Curative magic harmed a nilbog with the same intensity that the magic would otherwise heal.

Creatures within 20 ft. (6 m) of a nilbog will generally pursue a course of action contrary to their normal intent; for example, a creature may feel an overwhelming urge to load all its treasure into an empty treasure chest and leave empty-handed.