Editing Elder Evils (section)

===[[The Leviathan]]===
An immense sea monster personifying primal chaos that will destroy the world if it ever wakes up, because this list clearly needed more beings like that. As it gets close to awakening, the world is affected by extreme weather. The Leviathan does not have stats, as it is too big for the players to fight, but the players may battle against aspects of the leviathan, which are CR 16, or an advanced aspect, which is CR 20.

In the suggested campaign, the players save a port town from a disaster and are sent to investigate the cause of the strange weather. The party then encounters and defeats a cult that worships the leviathan, but their leader, a mysterious man named Enshaddon, escapes. Enshaddon is actually an advanced vampiric [[Ixitxachitl]] with 16 cleric levels named Axihuatl. He is a worshiper of Demogorgon and wants to partially wake up the leviathan using a shard of chaos in order to flood the world. After the players first disrupt his plans, he sends Marcus Hape (human, level 4 rogue, level 4 assassin, level 4 thrall of Demogogon) to kill them. With the help of a sage named Mytus who provides the players with magic and equipment for underwater travel, the players attack a temple located in a hollow spine on the leviathan's back and interrupt Axihuatl's ritual to wake up the leviathan, causing him to lose control of the beast. Axihuatl then allies with the players because he does not want the leviathan to completely destroy the world. They must then travel deeper into the temple and throw the shard of chaos into a pit at the bottom to put the leviathan back to sleep.

The 'the' in the name probably represents the greatest of its kind, as in 5e Mordinkainen's tome of foes introduced the Leviathans as [[Elemental#Elder Elementals|Elder Elementals]], also a CR 20 like its advanced aspect. 
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Leviathan aspect.png|Aspect of the Leviathan
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