Inevitable

Inevitables were lawful intelligent constructs native to the Clockwork Nirvana of Mechanus and the plane of Dweomerheart, where they were created by and served Mystra in her role of guardian of magic.

History
The inevitables were created by Mystra, as she was guardian of the laws of magic and they were tasked with enforcing the fundamental laws of the universe. However, others reported that Primus, the One and the Prime, ruler of Mechanus and the modron was responsible for creating inevitables with the purpose of establishing order in the dealings between inhabitants of the planes.

Locations
In the Great Wheel cosmology, inevitables could normally be found on their home plane of the Clockwork Nirvana of Mechanus, as well as the similarly lawful planes of the Nine Hells and Mount Celestia. However, they could appear anywhere when in pursuit of their quarry.

In the World Tree cosmology, the inevitables were found in Dweomerheart, the realm of Mystra.

Activities
They sought out and punished those who broke fundamental laws, such as "Bargains should be kept", "The guilty should be punished", or "Everyone dies eventually". Each type of inevitable would target specific infringements, but all would act without emotion, punishing those found guilty to the word of the law.