The Aboleth

Aboleths are ancient creatures from the Plane of Water. One travelled through the planes and appeared in a cavern underneath Thera-si's old village, where it was killed by the party.

Description
An Aboleth is large, fishlike being. They resemble something akin to a squid crossed with an eel, with multiple tentacles (one main one ending in a tail) and three eyes. Their mouths are jawless, and filled with multiple layers of jagged teeth. The one the party fought was a sea green colour, though it's unknown if this is the same for the entire species.

An Aboleth pollutes the water around it, and is covered in a mucus-like substance which it breathes through.

They also have psychic powers, able to enslave others and use telepathy.

Physical Abilities
The Aboleth's tentacles spread a disease to those who they hit, with the aboleth's mucus forming on their skin.

The Aboleth was also an excellent swimmer, it's scales were tough like a young dragon's, and it possessed Darkvision.

Magical Abilities
The Aboleth used it's psychic powers to enslave party members during the fight, including Gym and Corinthian. It was then able to siphon life from them, healing itself.

Invading the Village
The Aboleth travelled through the planes and ended up in a cavern, partially filled with water, underneath Thera-si's village. It infected the town's water, causing bouts of illness and amnesia. The majority of the villagers left. After about a month, the Aboleth's Chulls dug through to the surface, and razed the village, killing the remaining inhabitants.

Returning to the Village
Thera-si returned to the village with Lith, her child-hood friend whom she couldn't remember, and the rest of the party. Lith had heard of Thera-si from their work in Stonecrown, but was surprised when they couldn't remember her. Knowing that there was some root cause in the village, she asked them to come to the village.

Upon arriving the party found a wrecked village infested with Chulls. The party noticed a hole in the centre of a crossroads which Chulls appeared to be going to and fro from. While discussing a plan to distract them, Daniel went to investigate some movement on the outskirts. He found the Dread Knight stomping through the forest followed by an illusory projection of the Webweaver, covered in their blue cloak. After some one way discussion, the Webweaver dissapeared, leaving the Dread Knight to attack Chulls on the western side. This drew the infestations attention, allowing the party access to the tunnel.

The tunnel led to the Aboleth's cavern, where combat quickly ensued. Both Corinthian and Gym were enslaved; Corinthian forced to attack other party members, Gym forced to run into the water. Both managed to shake the effect off, with Gym using Bigby's hand to pull the Aboleth to dry land. It managed to kill Lynamin, but was itself killed soon after, and Gym revived Lynamin using Revivify. The beast's death also got rid of Thera-si's amnesia.