Ancient world

Bronze coin is the cheapest currency.
The silver coin is a little more expensive, but not that expensive.
Gold Coin - Expensive but not that much.
Emerald coin is expensive.
Ruby Coin - Super Expensive.

SCP objects and their classification
Each anomalous object is assigned an alphanumeric code (e.g., SCP-173, SCP-096) and a class, which reflects the difficulty of its containment, not its level of danger. The main classes are:
Safe. Relatively safe and predictable anomalies.
Euclid. Unpredictable or partially understandable objects.
Keter. Extremely dangerous and difficult to contain.
Thaumiel. Anomalies the Foundation uses to contain other threats.
Apollyon. Threats that cannot be contained or that lead to the inevitable end of the world.
Other organizations in the universe
Besides the Foundation, there are other groups that are aware of the anomalies. For example:
Chaos Insurgents attempt to seize objects for personal use.
The Global Occult Coalition (GOC) is a secret paramilitary agency of the UN that specializes in eliminating supernatural threats rather than containing them.
The Serpent's Hand. A militant group defending the rights of anomalous beings.

Name and transcript
The name has two possible interpretations:
Special Containment Procedures reflect the bureaucratic nature of the Foundation's work.
Secure, Contain, Protect is the organization's motto, which describes its mission.
History of creation
The project originated in 2007 on the 4chan forum. It all began with a post by an anonymous user named Moto42 describing a creature that only moved when not being watched. This object, designated SCP-173 ("Sculpture"), became the project's first entry. The success of the post inspired other authors, and the concept of a fictional organization quickly took shape. In January 2008, an independent wiki was created to organize the material, and the project later migrated to the Wikidot platform. Over time, international branches of the project emerged in various languages.
How the Foundation's universe works
In the SCP universe, the Foundation is a top-secret international organization operating outside the jurisdiction of any government. Its objectives are:
Secure. Prevent anomalies from falling into the hands of civilian or hostile organizations.
Contain. Isolate objects so that their influence does not spread.
Preserve. Protect humanity from anomalies and preserve the objects themselves for study.
The Foundation operates in strict secrecy to prevent mass panic and chaos. Witnesses of anomalous events are treated with amnestics (memory-erasing substances).
The structure of the Fund is quite complex:
The O5 Council. A mysterious group of senior leaders whose identities are classified.
Mobile Task Forces (MTFs). Elite units for operations in field conditions.
The Scientific Department. Researchers who study the properties of objects and develop containment technologies.
Class D personnel are those sentenced to death or life imprisonment who are used as expendable material for dangerous experiments.

There are many magicians
The first type of magicians are White magicians, they try to help people and do not fight.
Dark magicians, on the contrary, are always at odds with people, destroying villages and settlements for the sake of power.
and there are also Elemental mages, they are Neutral, they have their own Fire, Water, Earth, Wind, Ice, Nature and so on.

Appearance
Descriptions of goblins vary, but the following traits are common:
Height: from very small (about 30 cm) to quite tall (up to 2 meters).
Ugly appearance: disproportionate body build, long ears, cat-like eyes, and long claws on his hands.
Shapeshifting: Goblins can take on human form, but three key features (ears, eyes, and claws) remain unchanged.

Character and behavior
In folklore, goblins are often depicted as pranksters and mischief-makers. They can hide things, frighten people, cause nightmares, and spoil food and milk. In some legends, they kidnap human children, replacing them with changelings.

At the same time, the image of goblins could be ambiguous in different traditions. For example, in English folklore, there was the hobgoblin—a household spirit that could be either beneficial or harmful depending on the owner's attitude toward it.

Goblins in modern culture
The image of goblins has changed significantly since folklore times and has received new development in literature.

In The Hobbit, J.R.R. Tolkien portrayed goblins as aggressive, subterranean dwellers who feared sunlight. In The Lord of the Rings, these same people are more often referred to as orcs.

In other universes, such as Forgotten Realms or Warcraft, goblins and orcs are often presented as separate, albeit related, races.

In the role-playing system, goblins are short humanoids with green or gray skin, living in tribes and often hostile to other races.

Appearance and abilities
Initially, ideas about fairies varied greatly. They were described as petite, exquisitely beautiful women, or as repulsive creatures reminiscent of goblins or trolls.

Fairies were believed to be able to change their appearance, transforming into animals. Their height wasn't fixed—they could change it at will through magic.

Fairies acquired wings relatively late—during the Romantic and Victorian eras. In traditional Celtic sagas, fairies could fly without wings, using, for example, plant stems.

Lifestyle and character
Fairies lead a hidden life, dwelling in forests, near springs, and in magical hills (sidhe in Irish tradition). Their activities are varied: some live in communities and indulge in dancing, music, and feasting, leaving behind rings of mushrooms. Others prefer solitude and may settle near humans, sometimes helping them, but more often a nuisance.

Fairies have a complex character. They can be benevolent (helping people and bestowing gifts) or vengeful, prone to cruel jokes. They are said to kidnap people (especially children) and replace them with changelings, harm livestock, tangle hair, and lead travelers astray.

Classification
Fairies are often divided into two main groups:
“Social” people live in communities and are engaged in collective celebrations.
"Individual" - avoid gatherings, can settle near people or live in open spaces.
There is also a division into the Seelie Court (friendly fairies who help people) and the Unseelie Court (evil and unpredictable).

Some characteristics of trolls in folklore:
Appearance: They range from huge, ugly humanoids to small, gnome-like creatures. They often have very large noses.

Connection with stone. Trolls are believed to be "born from rock" and turn to stone when exposed to sunlight.

Lifestyle. They usually lead a solitary life, but there are exceptions: for example, trolls living under bridges can emerge during daylight, do not eat people, and value money.

Ancestors. In Norwegian folklore, the ancestors of trolls are considered to be the giants known as jötunns (jotuns), who, according to myths, participated in the creation of the world.

Abilities. Trolls can take the form of a dog, a black goat, or a man with a tail. In some legends, they kidnap newborns and replace them with their own babies.

There are Orcs here. Appearance. Often with olive-green or gray skin, large fangs, flat, monkey-like noses.
Character. They are traditionally attributed with such traits as belligerence, treachery, stupidity, and a tendency toward cannibalism.
Culture. They are often imbued with a barbarian culture, borrowing stereotypical attributes of Vikings, nomadic peoples (Huns, Mongols), as well as elements of Native American culture (totem worship, the presence of shamans), and serve those with a stronger Aura.