Scroll of revelation

Version 0.31: This article may not be up to date for the latest stable release of Crawl.

Type	Scroll
Name	Scroll of revelation
Icon

A scroll that reveals the reader's surroundings. The layout of the current floor is fully mapped, and everything within a moderate radius, including both visible and invisible monsters, is momentarily shown.

Reading a scroll of revelation causes three effects:

• Reveals the entire map of the current level. This includes all walls, stairs, portals, shops, and traps.
• Allows the caster to see through walls and opaque clouds until your next action.
• Reveals invisible monsters, again until your next action.

This scroll cannot be used in the Abyss.

Strategy

Scroll of revelation can be used for either the map reveal (medium-term benefit) or the wall/monster reveal (short-term). The map reveal can help find portals, altars, and branches. The wall reveal can help if you want to know if there's no monsters in the area or help if you want to go to the other side of a wall.

The wall-reveal is useful when:

• You need to rest, and cannot retreat to a safe location. Revelation can help you determine if resting is safe / how much time you have until the next fight. For example, if you spot a monster, but its far away, you can drink a potion of ambrosia for fast HP/MP regeneration.
  • This is most useful when you are teleported or shafted to an unknown location. Also, it can help when tackling hectic floors like Vaults:5. If you have the option of going upstairs or retreating backwards, do that instead of reading this scroll.
• You are forced to retreat to an unknown area and want to know what's next.
• You are mid-battle and want to know if you can dig through a wall or use Passwall safely. (Since digging through a wall may reveal monsters behind it.)

The map-reveal effect is useful when:

• You are hit by shafts or teleport traps. This will reveal the location of nearby stairs, allowing you to escape back to safety.
• Reaching portal levels, such as Gauntlets and Ice caves, before they expire.
• If you want to skip a floor from Dungeon: 8-12, you can check if the Lair and/or the Orcish Mines are on the floor you'd plan to skip.

If you have spare scrolls, they can be used for:

• On Dungeon: 4-7, if you haven't found a god yet, you may want to use these scrolls in order to search for the Temple.
• If you plan on ninja'ing a rune, using revelation can help find the rune vault.
• If you have spare scrolls by the time you reach Zot, you might as well use them.

History

• Prior to 0.31, these scrolls were known as scrolls of magic mapping. They only revealed the floor's layout; they didn't let you see through walls and didn't reveal invisible creatures for 1 turn.
• Prior to 0.25, scrolls of magic mapping did not reveal traps.
• Prior to 0.10, this scroll would not detect secret doors, although these doors were removed in 0.12.