The Chamber of the Old One

Now that The Horror of the Old Ones has been released, here is the final encounter in the adventure. To see more, check out the 56 page adventure at RPGnow.com here!

The short, slick slope leading from the last chamber ends here at the shore of a pool of briny water. The water surges with the pulse of the ocean, small waves lapping at your feet. To the left a large cavern stretches out.

This dark cavern swirls with strange mists, and high above the ceiling seems to fade and reappear in patches with the mist, revealing distant, bright, hard pinpoints of light in an inky blackness above.

At the far end of the chamber, in a crater shaped pool, stands an immense oval-shaped mass. It's irregular surface is streaked with veins of purple, black and green minerals, and broken by a crack large enough for an ogre to pass through. Fragments of the strange oblong lie below the crack.

This 100 ft by 50 ft ovular cavern is the chamber of the Old One. Before the dawn of man, the old one's cocoon traversed the spaces between the worlds. It crashed into the sea here, creating the Onuago bay and the mountain of rock called harpy point with it's impact. DC 30 knowledge arcana or craft metalworking will reveal that the cocoon is made of iron, with veins of adamantium and magesilver throughout.

In the eaons since then, the sea's ceaseless crashing and later the scrabbling of the Children of the Sea have excavated this place. Then, with his ritual, Ernaldus fully wakened the Old One, who burst out of it's cocoon to sew madness and ruin in Onuago.

The pool of water leads to the sea at the west side deep below harpy point. The old one's will has prevented the water from flooding in to fill this chamber up to this point.

The roof of this chamber is shiftingly transparent, and reveals the stars that wheel above regardless of the time of day or night.

Creature: the Old One dwells here, and is likely either in it's vessel or out at the bottom of the bay. If in the bay, it should emerge from the briny pool and attack the party from behind as they examine the chamber and the cocoon.

Old One: HP: 175

Tactics: The Old One will likely begin it's assault with a chain lightning and dominate person and then cast blink as it strides towards the party, allowing it's wisdom draining gaze attack and it's slow aura to do their work. As long as the party is not being particularly effective, it will use it's melee attacks to slay them. If seriously threatened, it will retreat via dimension door, summon a chaos beast, and use lightning bolts to eliminate the most effective foe, be it spellcaster or warrior. The Old One will fight to the death.

Treasure: There are Adamantium and Magesilver deposits in veins in the interstellar asteroid. If somehow retrieved, they are worth approximately 50,000 gold.

Development: After the defeat of the old one, the sea rushes in to cleanse the chamber. The body of the old ones floats strangely and is washed out. As it passes, the players can make a DC 12 Strength check to grab it and hold on as they are carried out by the surging water. The body will quickly rise to the surface of the bay, and begin to drift towards Onuago on the now calm water.

Failing this, the party must swim (DC 13 swim checks, to travel 100 ft. to the surface of the Bay) or leave by magic.

The empty husk is deposited like a beached whale near the near the shore of Onuago.