Dungeon23, February Day 17

 The Crypts Area reveals a small worship chamber belonging to the evil cult:

Area 22

The door to this room is closed but not locked.

This rectangular room has cobblestone floors and plastered walls. Four heavy wooden pillars secure the ceiling at each corner. Across the room, facing the doors is a large stone statue of a male hellspawn holding an open book. The book is held in a way to be read by onlookers, not the figure in the statue. A pair of large iron braziers burn with a heavy flame, filing the room with light and heat.

The statue is that of the hellspawn founder of the evil cult: Mormentos Darkhorn, as described in Area 3. This room was placed here in his honor and serves as a place of worship and defense for members of the evil cult operating in the Crypt Area.

This room is filled with the power of evil. If any spell or magical ability is used to sense evil, such as the detect evil and good spell or a paladin's divine sense power, the caster must make a successful DC 15 Wisdom saving throw or be stunned for 1 round, due to the presence of overwhelming evil.

Carved into the stone pages of the book held by the statue is the following inscription, written in Infernal:

Cast your blades into the fire and call upon the name of He who is the Lord of Hellfire, and your enemies shall fall before you.

The inscription directs the characters to place their weapons into the fire of the braziers. If they do this, and call upon the name of the Archfiend “Mephistopheles,” their weapons will become imbued with the power of fire for 1 hour; becoming sheathed in a blue flame. During this time, the weapons count as magic, for the purpose of overcoming damage resistances or immunities. They shed light like a torch and they also deal an additional 2d6 fire damage to creatures when used to attack. After one hour, the weapon returns to normal, the blue flame disappearing from it. A PC may only benefit from using this brazier once per day.

The evil cult is aware of the power of this brazier. If they become aware of danger or intruders in the Crypt area, they will come to this room and use its power to enhance their weapons before going in pursuit of said intruders.