Astral/Ethereal Encounters

Encounters occur 1-in-20; check at the beginning, midpoint, and end of the journey. 

If an encounter is indicated (usually 20 on the die), consult the appropriate table and roll percentile dice. Read to the right on the table to find the creature encountered and the number encountered. Evasion is possible only if the adventurers are able to move more quickly than the  monster encountered.

Psychic Wind & Ether Cyclone

While you can threaten the dire effects of the Psychic Wind and the Ether Cyclone, these devices cannot be fully employed unless you have developed extensive information on the various planes, or else you have obtained commercial offerings on the subject. Becoming lost or injured is always possible, of course, and this is detailed below:

Chance For Wind Or Cyclone Blowing. The chance of a delayed or disrupted journey is 5% per plane crossed (including alternate worlds) or solar system traveled to. Effects of these forces are shown prior to the encounter tables.

Note. If astral projection does not involve a silver cord attachment, then the party concerned is both lost and arrives at a different destination when struck by a psychic storm wind. 

Astral & Ethereal Encounter Tables

The [Character] Subtable used for Dungeon Random Monster Encounters is used, with the following modifications: [All members will be human.] Party size will be only 1-6. No limits to the number of characters of one class apply. There will always be 1 cleric; if 2 or more in the party, there will also be a minimum of 1 magic-user. Character level will be: