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 the following three effects:

• Reveals the entire map of the current level. This includes all walls, stairs, portals, shops, and traps.
• Allows you 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 wall/monster reveal (short-term benefit) or the map reveal (medium-term). In general, 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 map reveal can help find portals, altars, and branches.

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 to a known location, 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 monsters may be on the other side of a wall.)

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.