Helfire Mountain

A doomsday cult has opened a portal inside a volcanic mountain, allowing an elemental lord to enter the realm. A party of 4–6 adventurers of levels 7–9 must reach the heavily guarded portal and attempt to send the entity back. This mini-dungeon can be added to an existing campaign as a side quest or played as a short standalone adventure.

基于属性/数值（STR、CON、PER 等）骰子（主要为 d20）职业制（飞行员、巫师、科学家等）