The Staircase is a really fun way to send your heroes to other planes and it is also an awesome adventuring location all its own. It really feels like a great way to send low level heroes on planar adventures.
Most of the information on the Staircase comes from a Planescape adventure by Monte Cook, called Tales From The Infinite Staircase. You can buy it here.
D&D 5th Edition
Dungeon Master's Guide
- You can find your heart's desire through diligent searching of each landing.
- Doors are often guarded by devas, sphinxes, or yugoloths.
- "The Staircase is the goal of every longing heart, the road to every dream."
- The Infinite Staircase has doors that lead to many different planes.
- The Staircase joins with any area on a plane where intelligent creatures have expressed some sort of creative spirit.
- Stairs that lead to evil planes are cold and shadowy. Stairs that lead to Upper Planes are clean, bright and warm.
- Gravity changes from landing to landing.
- Each landing has a door. The keys to the doors are always mysteries, riddles and puzzles.
- Dark passages are said to lead to cities where all magic fails or where visitors age, wither and die.
- The Staircase is guarded by Lillendi, snake-women who serve a moon goddess.
- Those who offend the moon-goddess are trapped here.
- The Staircase is always under construction. The builders are always heard but never seen.
- Strange creatures of elemental time supervise its operation.
- A person can travel the staircase to get to the city of their heart's desire, but only once. This usually only happens to lone travelers.
- There's a guild of adventurers who live on the Staircase, known as The Planewalker's Guild.
Tales From the Infinite Staircase
Origin of the Infinite Staircase: It grew out of the Gates of the Moon in Selune's palace on the Plane of Ysgard.
Beginning an Ascent: The staircase appears as a spiraling silver stairway entwined with ivy. The first landing is 1,000 feet overhead. The landing is a 200 foot disc with other staircases extending off - each staircase looks different and is made of different material.
Duration: Travel times between landings can last from hours to one or two days.
Flying: Flying works as long as you stay close to the stairs. If you fly 25 feet or more away, you might pass through an invisible fold that causes the flyer to appear in some random plane with no way back. Those lost in this way are never seen again.
Falling: If you fall off a landing or stairwell, you plummet 10d100 feet before landing on a stairwell.
Landings: These are all different sizes. Every landing has a door, which could be anything from an open archway to a metal vault door.
Doors: Many doors open into cellars or abandoned buildings. Usually the people in that plane don't even know the door is there.
The book actually lists a few doors and where they go to:
- One leads to a village on Oerth (the Greyhawk campaign setting).
- One leads to Broken Reach, the town in The Plain of 1,000 Portals.
- One actually links to the city of Sigil. It leads to the Guildhall Ward, within a garden's archway. Going through from the Sigil side requires a portal key - an ounce of silver.
- A random creature turns invisible.
- Damage from spells is doubled.
- While in the area, a creature has a 19 strength but a 3 intelligence.
- Cats, dogs or little kids who walked through a portal accidentally.
- Planewalking adventurers.
- A dwarf who won't admit he's lost.
- A lillend who can give directions.
- A Manticore.
- Places on the Staircase can't be scryed, only individuals.
- Weather-affecting magic doesn't work.
- Monster summoning spells all summon the same type of monster, the Einheriar.
The Gates of the Moon: The Staircase is linked/based out of Argentil, the palace of Selune, goddess of the moon and stars. The palace is on a rocky island lit by a nearly full moon. Selune is a god, so "..anyone stupid enough to enter the Gates of the Moon seeking to attack, steal from or even spy on Selune is instantly and automatically destroyed..."
Argentil: A silver palace guarded by a lone silver golem that can breathe poison gas that kills you if you fail your saving throw.
The mood of the denizens of the isle (lillendi and "shards") there goes from friendly to brooding with the cycle of the moon. The Infinite Staircase is only accessible during the full moon.
The Shards: They look like human women, but they are made of moonlight and flame. They are very moody. Shards are chaotic good, are immune to fire and they can see in darkness. Shards can cast burning hands, light, darkness, faerie fire and dancing lights.
- They have their own factions, which they call "mysteries." The more mysteries one lillend belongs to, the higher her status. They wear masks to reflect this status - these masks are called faceless masks of infinity.
- Lillendi love music and art, and creativity. Songs and poems mean more to them than gold.
- They are prejudiced against devils, tieflings and modrons because of their lawful nature.
- They can constrict enemies with their tails
- They can cast spells like speak with plants, Otto's irresistible dance, knock, light, polymorph self, and transport via plants
Their headquarters is a large landing with tents and buildings. They welcome strangers, feed them and give them a place to sleep. Here's a few of the main members:
- Hav'run Thain: This minotaur leads the guild. He is peace-loving and is accompanied by a kyrie named Vagis.
- Oriam Trascalia: An old human wizard who doesn't do a lot of planewalking anymore.
For Duty & Deity
The heroes step through a magic mirror and emerge onto a silver staircase. They'll meet a lillend named Cattariina, who can tell them about the Infinite Staircase. After a day of traveling, the group comes upon an interesting place..
|The Nowhere Inn|
- Ching-Dau: Lives in a pink tent, sells meat.
- Allisa Misthaven: An elf who sells elven wine called Starclear. It's a watered-down impersonation of Evermead, a fine elven drink.
- Ceylon: An ogre mage who offers to be a guide. He is a coward that places his own safety first.
D&D 3rd Edition
Fiendish Codex I
"Here and there other staircases come into view, some of which appear to be upside down or at odd angles to the traveler's perspective. All are part of the same massive expanse, which bends and folds in on itself in a manner unperceivable by the traveler but no less real because of it."
The book gives us a list of Abyssal locations that connect to the Staircase:
- Zelatar and Samora (In Graz'zt's Triple Realm).
- Zoragmelok, the seat of Fraz-Urb'Luu.
- Rivenheart, the sacred fane of Malcanthet.
Not too much info. In general, the Staircase seems to get a blurb. It's never been overly-detailed and I think it's full of adventuring possibilities. At the very least, it's a cool place to use for session or two.
For more on The Infinite Staircase, check out mimir.net. They have lots of cool ideas and NPCs here.