Chronicles of Khaldun: Crux of Eternity
Oogloogoth, the Thought That Waits
The Thought That Waits is an aboleth — a primordial piscine creature from the Far Realm said to possess a vast and malign intelligence — said to lair beneath Scandshar. The Shields of the Sorrowfell encountered its minions, very far from home, seeking an artifact known as the dagger of devouring.
Also, credit where credit is due. Original image source:
Tsai, Francis. “Aboleth” (2008). Dungeon Magazine. Retrieved November 19, 2014, from http://gamingmage.wordpress.com/2011/04/07/theme-thursday-alien-campaigns/