The Cathedral of Sin

A couple days ago we previewed the map.  Here is a full draft of a sidequest by Aaron Canton:

Tags: Demons, Holy powers, Religion

An evil demon (alternate: carrion eater) has taken over a cathedral and is using it as a base to spread corruption. With every sin anyone commits (alternate: every person that is killed) while in the cathedral, the demon gets even stronger!

Getting the PCs Involved:

• The PCs hear rumors of unnatural rites and violent ritualistic attacks near the town surrounding the cathedral.
• The cathedral’s priest finds the PCs and begs them to liberate his church from the demon that took it over.

Encounters:

• The demon’s cultists attack the PCs with strange magic that inflicts mental damage as well as physical pain.
• The PCs come across rooms full of treasure, delicious food, beautiful courtesans, etc. If the PCs accept the pleasures, the demon is strengthened.
• The demon tempts the PCs by offering an infernal boon in exchange for killing a priest who has been rallying opposition to the demon.
• The PCs find the acolyte who summoned the demon in the first place. His infernal magic can only be beaten if the PCs learn to wield the cathedral’s holy magic.

Follow-Up Adventure Ideas:

• The PCs find the ritual manual which the acolyte used to summon the demon, and they must decide what to do with it.