Planescape Campaign
Planescape Cosmology - Gehenna
“Bleak Eternity of Gehenna”
Summons only bring forth creatures from the plane of Astral, Outlands, Gehenna, Baator, and Gray Waste.
See the Climb Skill (Chapter 4 Player’s Handbook). There’s no level terrain in any layer of this plane. Anyone losing his feet, tumbles down until stopped by something or someone (falling damage is half the distance rolled in feet). Also the hot surfaces of the volcanoes inflict damage on the unprotected (Khalas, 1d2 fire damage per round; Chamada, 1d6 fire damage per round; Mungoth, 1d3 acid damage per turn and the storms can last for hours; Krangath, 1d6 cold damage per round).
Enchantment is diminished and Invocation is enhanced.
Melroch Eitheldor @ 2003