Invisibility (ego)

Version 0.26: This article may not be up to date for the latest stable release of Crawl.

When activated it hides its wearer from the sight of others.

Wearing equipment with the invisibility ego grants you the Evoke Invisibility ability, allowing you to turn invisible at will. It requires a decently high Evocations skill to use reliably or for a long duration. No matter if you actually turn invisible, your maximum hitpoints will be temporarially drained. Turning invisible will also cause magic contamination - though only noteworthy after extended use. (See the Invisible article for details.) A large enough buildup of magical contamination will make you glow, rendering your invisibility moot, among other harmful effects. Be sure to take some time between fights to rest and shed your contamination.

The invisibility ego can be found on:

• Scarves
• The artefact ring of Shadows
• Randomly generated artefacts

Desirability

Invisibility is a fairly useful ego, giving the wearer the ability to turn invisible without having to learn to cast a level 6 spell or use up a rare potion. Being invisible grants many strong bonuses, such as decreased enemy to-hit, an increased chance for enemies to forget about you or fail to notice you entirely, and the ability to get low-tier stabs. However, theEvocations investment required for reliable use and temporary drain discourage using it until you start facing more monsters who can see invisible. Players can try evoking with low skill; but risk getting heavily drained with no benefit.

Success rate rises with Evocations skill:

Evocations	Failure rate(%)
0	71.47%
1	67.43%
3	58.88%
5	50.00%
7	41.12%
10	28.53%
15	12.31%
20	3.71%
25	0.49%
27	0.11%

History

• Prior to 0.26, evoking invisibility caused hunger instead of draining you.
• Prior to 0.25, invisibility generated on cloaks instead of scarves.
• Prior to 0.21, removing an invisibility-ego item while invisible did not cost the player extra magical contamination.
• Prior to 0.20, this ego would let the player turn visible again once invisible, as a way to reduce contamination.
• Prior to 0.18, this ego could be found on rings.
• Prior to 0.16, this was called the Darkness ego.