Mystara's Inner Plane Encounters (BECMI/Mystara Sources Only)
by HåvardDonald Eric Kessler just asked about an Encounter Table for the Ethereal Plane, so I decided to throw together something real quick.
I also recommend my map of the Inner Planes for Mystara's Cosmology which can be found here and Threshold Magazine #19 which adds more detail to The Multiverse. I also really liked this blog article on The Ethereal Plane which has information about terrain features and other challenges in addition to just monsters found on the Ethereal Plane.
According to WotI and the D&D Companion Rules Faeries, Haunts (Banshee, Ghost, Poltergeist), Plasms, Planar Spiders can be found on the Ethereal Plane.
ETHEREAL PLANE ENCOUNTERS
Adaptor
Adventurers
Blink Dog
Displacer Beast
Dragon or Dragonkin (Roll on Separate Table)
Ebon Tiger (MMCA)
Elemental Creature (Roll on separate table)
Faerie
Fey (Roll on Separate Table)
Hag (Sea or Black)
Hell Hound
Imp (Gaz3/MMCA)
Invisible Stalker
Lich
Ostegos (AC9)
Plasm
Shadow
Soul Eater (AC9)
Spectral Hound
Sphinx
Spider, Planar
Spirit, Shamanistic (Gaz12 and Gaz14), Roll on separate table
Undead, Incorporeal (Roll on Separate Table)
Vampire
Yowler (AC9)
Special (Creature from other edition, Immortal or DM’s Choice)
FEY, MYSTARAN (PLANAR ENCOUNTERS)
| D% | ENCOUNTER |
| 01-03 | Actaeon |
| 04-06 | Banshee, Lesser /Wailing Fey (AC9) |
| 07-10 | Brownie |
| 10-11 | Brownie, Redcap |
| 12-13 | Coltpixie (PC1) |
| 14-15 | Crone of Chaos (AC9) |
| 16-20 | Dryad |
| 21-24 | Dryad, Hamadryad |
| 25-26 | Elven Hound / Coin Sithe (DMR1) |
| 27 | Faenare (PC3) |
| 28-30 | Faun/Satyr (PC1) |
| 31-32 | Feathered Serpent |
| 33-24 | Flitterling (AC9) |
| 35-36 | Ghostly Horde /Wild Hunt (AC9) |
| 37-40 | Gremlin |
| 40-45 | Hag (1-4 Sea, 5-6 Black) |
| 46-50 | Harpy (PC3) |
| 51-55 | Imp (1-2 Bog, 3-4 Garde, 5-6, Woodimp) |
| 56-58 | Leprechaun |
| 59 | Leprechaun, Clurichaun |
| 60 | Malusite (M3) |
| 61 | Myth’unn (SCMCA) |
| 62-65 | Nixie |
| 66-67 | Phantom, Lesser (AC9) |
| 67-68 | Piranha Bird |
| 69-73 | Pixie |
| 74-76 | Pooka (PC1) |
| 77-78 | Shimmerfish (SCMCA) |
| 79-81 | Sidhe (Eladrin) |
| 82-83 | Sidhe, Eldar |
| 84-86 | Sidhe, Faedorne (AC9) |
| 87-88 | Sidhe, Protector (AC9) |
| 89-94 | Sprite |
| 95 | Surtaki |
| 96 | Swan May (M3) |
| 97 | Tepictoton (Azca) |
| 98 | Wychglow (AC9) |
| 99 | Wyznet (SCMCA) |
| 100 | Fey Ruler /Archfey |