| Category | Tomes |
| Type | tome |
| Author | unknown Lith-Crillion |
| Location | Târbal Vault |
Izrukîn Sa Thir, which in Tragaran says "Web of Arcane", is a tome written by an unknown Lith-Crillion. The book details aspects of the Web of Magic, such as weave spiders, the Cube of Arcane, and so on. It also gives information on how to manipulate the Web of Magic.
In 985, a wizard named Adîlkhâru, stole the original book from the Pyramid of Conflict. In one of her diaries she writes:
... as I made my escape, blasting my way through a mob of half-dead, one of Pyramid's guards called out a calm voice, warning "In a decade you will bring ruin upon a wide area and see the deaths of tens of thousands".
- from the Diaries of Adîlkhâru
The study of Izrukîn Sa Thir opened the way for manipulating the Web of Magic. Adîlkhâru and her power-hungry cohorts of the Eldiritch Conclave, created a school for teaching the art of web weaving. About ten years later, in the Domination Wars, Conclave web weavers were blamed for taxing the Web and bringing on a period of magic running wild; the Gulimbor Cataclysm (996 - 1203).
The original Izrukîn Sa Thir is in Yanâth-Târuk, the book secured in a living vault called the Târbal Archive.