Minecraft Dungeons:Scroll

A Scroll is a map item that can be found within secret areas of missions that can be used to unlock secret missions. They are usually found within another level, but there is also one located within the Camp which unlocks, specifically behind the church. They appear on stone plinths, and usually have a Candle beside them that gets blown out.

Spawning
Scrolls found within the Mainland missions, as well as the Flames of the Nether DLC, have a 100% chance of generating, whereas scrolls found within the Island Realms have a random chance of generating. Among those scrolls with random chance for spawning, the scroll for found in  is the rarest in the game and currently is inaccessible due to a bug.(Note:it is now accessible but There is a SUPER DUPER rare chance).