Bounded Field

A **Bounded Field** is a type of thaumaturgy that consists in knitting a network of magical energy and spreading it on base area to divide the "inside" from the "outside". This can be done for many reasons, but the most common is to limit interaction between the "inside" and the "outside". The scale can vary from the size of a sheet of paper to encompassing an entire building.

Bounded fields exist naturally on the boundary between the Astral Plane and Planes Of Existence. They also exist on the boundary of Overlapping-Dimensions.

## Mechanics

### Set

A bounded field once constructed is considered set, but not active, until Magical Energy is infused.

### Activate

Once activated, the bounded field will limit the interaction between the "inside" (defined as the smallest area) from the "outside". Depending on the construction and energy provided, the of the field strength can vary.

### Energy Cost

While this bounded fields can last a long time, as they are very energy efficient, they do have a basic energy cost to maintained. If not maintained the bounded field will stop being a bounded field and therefore stop functioning as one. It's cost can be increased to make the field more powerful and be more resistant from breakage.

The energy cost of the bounded field is directly correlated to the perimeter of the bounded field, therefore bounded fields tend to be circles as they are the most efficient shape in terms of their perimeter to area cost.

### Complexity

The more "complex" a bounded field is, the harder it is to break, as the field repairs itself while still in existence.

### Breaking a bounded field

Removing single parts is not enough to deactivate a bounded field, as it repairs itself as long as the rest of the field is active. It requires canceling out the field entirely and that itself can be difficult. Instead, many chose to temporarily deactivate a section of the bounded field instead when trying to infiltrate/exfiltrate one.

Another way to break the field is to overpower the bounded field, however this tends to out power even powerful Rego and, if properly made, even Greater Boundary Magic cannot break them.

### Breaking Laws of Thaumaturgy

Due to the inside of bounded field being considered separate from the outside, a creature can turn the inside into it's own separate reality. Using this they can try to break the Laws of Thaumaturgy within these. However, once the intent is made, the universe actively tries to destroy it, in most cases instantly breaking the field and canceling any spells or magic within. The only way to prevent this is to to infuse the circle with enough magical energy to rival that of the universe. However, even with success, they are limited to this within this field and therefore their access to True Magic is limited to this bounded field, and leaving it will lead to absolute removal of anything tainted with True Magic.

## Types

### Confine

This type of bounded field prevents interaction of those inside with those outside, those outside with those inside, or both.

### Avert

This type of bounded field prevents those from the outside to notice anything inside. This does not turn those inside invisible, it just removes them from outsiders perspective.

### Barrier

Much like a confine type bounded field, this type of field is used to prevent unauthorized entry into a area. This is typically used in conjunction with avert to prevent entry into magical property.

### Control

This type of Bounded Field limits reactions that occur somewhere to the area they were cast from. Ex. If a mage where to cast a spell from within a bounded field to a target outside, it would instead be cast within the bounded field.

All bounded fields are naturally control fields.