Taag'thrith, born a gith but transformed into an illithid by ceromorphosis, has been finally found purpose: the assimilation & understanding of all knowledge. Taag'thrith plans to unleash a 10th level spell that will grant him just that-at the cost of all sentient life on the Material Plane. Will the heroes be able to traverse the dangerous corpse of a dead God, find Taag'thrith's aqueous lair the Eternal Spirals, & pit their foes against one another in order to destroy the foul lich once and for all? Or will they fall prey to the threats trapped within the Eternal Spirals & sink beneath the surface forever? They Came from the Deep is the second installment in Pretty Little Liches: a trilogy of adventures centered around three unique liches and their lairs designed for high-level play. These three lairs and the surrounding regions can be run independently as individual adventures or tied together into a mini-campaign that centers on the destruction of the Green Hand, an organization of dangerous liches.
On a nameless, featureless demi-plane the Tarrasque rages across an all-encompassing nothingness. Last seen on Faerun a century ago during the cataclysm of Odobaz, the battle mage order of the Eldritch Storm sacrificed itself to banish the mighty titan to its demi-plane prison. Now a foul power emerges in the High Ice and nightmare visions of the Tarrasque trampling cities wrack the minds of the living—can your adventurers defeat the Horror Under the Mountain?