From PathfinderWiki

The Water Lord
Serpent King
The World Serpent
The Father of Dragons
Areas of Concern
Draw spirals, seek primordial secrets, use poisons, always carry water
Suffer a linnorm's death curse, destroy a fossil
Cleric Alignments (1E)
Domains (1E)
Chaos, Evil, Scalykind, Water
Subdomains (1E)
Ancestors, Dragon, Oceans, Venom
Cleric Alignments (2E)
Domains (2E)
Destruction, vigil, water, wyrmkin
Favored Weapon
Sacred Animal
Sacred Colors
Source: The First World, Realm of the Fey, pg(s). 32 (1E)
Gods & Magic, pg(s). 79, 126
f. (2E)
For another meaning of "World Serpent", please see Zanathura.

Ragadahn the Water Lord, also called the Serpent King and the World Serpent, is one of the Eldest, a divine fey creature of tremendous power said to be able to reshape the very fabric of the First World on a whim.1 He appears as a linnorm2 and maintains that he is the father of all linnorms in the First World and, one suspects, the Universe too. In making this claim he also counts himself the Father of Dragons, and this title may be considered heretical by other dragon deities.1

Arrogant and wise at the same time, Ragadahn believes that the oceans are home to the first life and the secrets of eternity, and knows a great deal about extinct aquatic cultures in the Great Beyond. He is fond of symbolism, especially the limitless ouroboros and spiral.2


Ragadahn is an enormous, streamlined blue-green linnorm with flippers in place of legs.2


Ragadahn resides in the city of Karaphas, but claims all bodies of water in the First World (and the Material Plane, to an extent) as his own realm and all creatures dwelling there as his subjects. In truth, he cares little about them, and few ever see him, though few dragons would enter the deep waters of the First World without his permission, and those seeking to speak to Ragadahn are advised to call his name from land so he would not accuse them of trespassing.2

Ragadahn is the Eldest that most often leaves the First World to travel and sire children in the Material Plane, or visit the libraries in Axis.2


Ragadahn is intrigued by Magdh, and shares an interest in the esoteric with Shyka and Ng. He considers the Green Mother petty, the Lantern King irreverent, and the Lost Prince pouty. It is believed that Ragadahn is the individual most knowledgeable about Imbrex's goals (outside of Imbrex themselves), but he rarely talks about the Twins.2


Many linnorms bow before Ragadahn as their progenitor, while chromatic and metallic dragons view his claimed title 'Father of Dragons' as heretical.2 The Lake Lost to the Sun in the Sarkoris Scar hosts a large population of fey water orms led by a particularly huge fjord linnorm called Ilirjastehr, who serves as Ragadahn's envoy within the lake.3


For additional as-yet unincorporated sources about this subject, see the Meta page.