Myser is a warm, humid moon that the DM can place anywhere. It is best located orbiting an outer planet, the moon kept warm by internal heating by portals to the elemental plane of fire. A major mind flayer world should share the same sphere. Travelers steer clear of Myser, as it has a foul reputation due to its inhabitants.
The moon is noted for its countless, mountain-like geysers and boiling cauldron hot springs. Steam from these geothermal locations rises into thick, obscuring clouds. Sunlight rarely pierces the cloud cover, leaving the moon in perpetual twilight.
About one third of the land is stable enough to walk on. The rest is rendered unstable and dangerous due to the geothermic activity. Anyone that walks on unstable land risks falling into an unseen pool of scalding hot water. Fortunately stable land is marked by trees and plants; the hot springs and geysers kills off anything near it. The whole moon stinks of rotten eggs.
The endless geysers, hot springs, and mud pools create an enormous amount steam. That steam rises into sky to become clouds that cover the whole moon in an unbroken blanket. The clouds blot out the sun, casting the whole moon in twilight conditions. Rain is quite common; it rains in any given place at least once every other hour.
Myser is always hot and extremely humid. Treat conditions on the moon as a hot jungle or rainforest.
The unbroken cloud cover of Myser gives the moon a blank white facade.
Although Myser has no true oceans, it does have large, shallow seas fed by hot springs. Consequently, the water in these "hot seas" is quite acidic, poisonous, and boiling hot. The seas divide Myser into three landmasses. The largest is Yellow Heights, while White Rock and Steam Fell are smaller islands. In many places, it is possible to wade from one island to another, if one is immune to acid!
Whatever native wildlife that once thrived on Myser has been long since destroyed. The mind flayers have imported ortlings and bred them to resist heat. The ortlings act as a ready supply of food for hungry resort patrons. The near-mindless creatures are allowed to roam wild, as if they were goats or other herd animals. Other beasts imported by the mind flayers include intellect devourers (used as hunting dogs) and a breed of flying ray used as mounts. A favorite sport is to release a thinking being (a human or other like creature) into the wilds, and hunt him down. The longer and more torturous the hunt, the higher the mind flayers value the trophy.
Flora includes various evergreen trees and ferns that thrive in twilight conditions. The trees are not immune to the poisonous effects of the geysers, which can quickly kill off nearby trees. The moon is dotted with dead forests, killed by the geysers.
The undisputed masters of Myser are mind flayers and their aboleth allies. The foul creatures use Myser as a resort of sorts, with hot springs for them to relax and enjoy themselves. The mind flayers dwell on the surface in small cities centered on hot springs. The cities are marvels of stone, with hot and cold running water and many luxuries most can only dream of. Mind slaves of all races serve the mind flayers' every need and want. The depravity the slaves are forced to endure is beyond the comprehension of most thinking beings.
The aboleth dwell at the heart of Myser. The geyser moon is an experiment of sorts to them, as they have created a miniature paradise for themselves in the depths Myser. These aboleth are immune to the hot, scalding waters. The goals of these creatures, as the mind flayers have learned, is to either create new moons or transform existing moons into mirror images of Myser. In doing so, they hope to create an empire for themselves, one of environments hostile to all other life other than themselves. The mind flayers, of course, are eager to learn the aboleth secrets for themselves, and likewise transform worlds into hellish landscapes unsuitable any but the mind flayers and their slaves.
Myser has two significant ports, both owned by the mind flayers. The largest and older of the two ports is roughly translated as "Scalded-Brains-Torment". It specializes in mineral baths that have a rejuvenating effect on mind flayers. Each day of bathing either removes one harmful effect (such as a disease) or heals the mind flayer as if it received a cure serious wounds spell. "Scalded-Brains-Torment" is popular with injured or diseased mind flayers as well as those looking to relax in a boiling hot pool of water.
The second port, translated as "Hunt-In-The-Steam", specializes in providing "sport" for mind flayer clients. For a nominal fee, the patrons can send thinking beings out to be hunted, as if they were foxes in a fox-hunt. The more resourceful and capable the hunted, the better the trophy is. More than one adventurer has met his grisly fate being hunted down on Myser by mind flayer huntsmen.
Although not a port of any sort, the aboleth do maintain their own city at the very center of Myser. It floats in a pool of boiling hot water in a large, lightless cavern. The city, translated to "Threat-Unseen", has magical properties to protect the inhabitants from steam and heat. Of course, the protection extends only to the boundaries of the city, so any slaves that attempt to escape are killed by the deadly steam and boiling water. The city is a large sphere with towers rising into columns that join with the roof of the cavern. There are hundreds of aboleth and thousands of slaves in "Threat-Unseen".
This moon has in the past served as a home for tribes of ogres, goblins, pirates, and even beholders. About the time of the Unhuman Wars, the moon was cleared out by gnomes and their hired giff mercenaries seeking to make use of the abundant geothermal heat for a new type of mill. The mill was a failure, and the gnomes sold the moon to the mind flayers to recoup their loses.
The mind flayers quickly set to work molding Myser to suit their needs. The gnomish port was dismantled, but the foundations were structurally sound, so were reused for new buildings of mind flayer design. Hot spring baths were installed, creating a luxurious retreat for the wealthiest mind flayers.
Soon after the mind flayers settled in, they discovered the aboleth dwelling at the core of Myser. The two constantly feuded through psionic duels, but such conflicts never erupted into true violence.
Myser has no moons, but there are always 2 nautiloids in orbit acting as picket-ships.
