| Category | Pacts |
| Members | Fongruk-Toa |
| Ginrall | |
| Period | 409 - 412 |
The Diortfel Pact was a military alliance between the kuo-toans of Fongruk-Toa and the illithids of Ginrall. The objective of this alliance was the subjugation of Elalmoth. Members of the pact sought to enslave the majority of the city's population. The Kriavfahliil of Elalmoth, aware of their impending fate, chose death over having their brains consumed or being forced to toil in the Underdark mines. The Kriavfahliil were confident in their ability to defeat the enemy, having fended off raids by the illithids and kuo-toans for centuries. When Fongruk-Toa and Ginrall forged the pact, a brilliant illithid general named Diortfel reorganized the two armies, with illithid advisors serving alongside the kuo-toans. They coordinated their attacks, and within a couple of years, had Elalmoth under a state of permanent siege. The Kriavfahliil were compelled to fly in food by griffons or resort to the use of magic.
On 13 Hollow 412, Elalmoth was conquered by the Diortfel Pact. The illithid triumph was fleeting, for in under a year, they faced assault from their previous collaborators. Documents discovered at Ginrall indicate that when a kuo-toan prisoner was interrogated, he cited a straightforward rationale for their raids on illithid domains:
The elves have departed, and you are now the sole inhabitants of this region. The Great Mother requires an offering.
kuo-toa captive, excerpt from a Qualith interrogation record