Reality Index

A reality Index is an artifact imbued with massive amounts of magic. Generally speaking, a reality Index serves one purpose, to generate and maintain an Alterworld.

The index is inscribed with runes which dictate various features of the Alterworld. Each and every symbol on the index must be expertly crafted, and the combinations cannot contradict one another.

Another important feature of the index is its material. Too much strain on any index invariably ends in disaster. The most commonly used material is gold due to its unrivaled magic resonance in metals, however great endeavors require great materials, so dragonbone or infernal brimstone reality indices aren't unheard of.

Reality indexes are one of the single most dangerous objects taken on by wizards. Those who design them are often known as "Architects" in the magical community.

The "divine" world's, so to speak, do not have corresponding reality indices, rather it's believed the will and imagination of the gods alone keep reality in check.