When exploring some location in the dark domain, the PCs find a rolled-up scroll. Place it anywhere the PCs are searching that doesn’t already have an item in it. When a character unrolls it, they see a simple phrase: “Beware the fire on the Tenth Night.” Oddly, no other player character can see the words.

Whenever that PC meets an NPC, the NPC refers to them by name. If questioned, they can’t quite say why they know the PC’s name. When parting ways, the NPC will repeat the phrase on the scroll. They immediately lose all memory that they did so.