Sack of spiders
Version 0.18: This article may not be up to date for the latest stable release of Crawl.
- This page is a stub. You could probably expand this page should you wish to do so.
| Type | Miscellaneous item |
|---|---|
| Name | sack of spiders |
| Icon | 
|
| A woven silk bag. Opening it will release a number of spiders and other insects, as well as creating webs nearby. Evocations skill increases its effectiveness. There is a one in three chance of accidentally destroying the sack when using it. |
A sack of spiders is an evokable item which, when used, generates a Spider's Nest-themed group of friendly monsters, and also generates multiple web traps in the area. Evocations skill affects both the strength and number of summoned allies, but not the success rate - that is set at 80% regardless of your character's stats and skills. Each sack generates with 5-15 charges, and cannot be recharged in any way.
Potential Results
Each successful use of a sack of spiders is guaranteed to produce at least 1-3 allies, plus an additional 1d(Evocations / 4) - 1.
A table of potential results versus example amounts of Evocations skill:
| Monster | Min. Skill | Max. Skill | Skill 0 | Skill 3 | Skill 6 | Skill 9 | Skill 12 | Skill 15 | Skill 18 | Skill 21 | Skill 24 | Skill 27 | |
B  Worker ant |
0 | 13 | 16.67% | 15.18% | 7.66% | 1.79% | 0% | 0% | 0% | 0% | 0% | 0% | |
B  Soldier ant |
0 | 13 | 83.33% | 84.82% | 52.68% | 21.54% | 7.53% | 1.48% | 0% | 0% | 0% | 0% | |
s  Redback |
6 | 19 | 0% | 0% | 39.66% | 57.92% | 56.7% | 33.41% | 12.25% | 0% | 0% | 0% | |
| s Redback |
8 | 27 | 0% | 0% | 0% | 18.75% | 28.69% | 36.07% | 33.04% | 18.21% | 12.53% | 11.76% | |
s  Jumping spider |
10 | 27 | 0% | 0% | 0% | 0% | 7.09% | 22.28% | 28.57% | 22.49% | 15.48% | 14.53% | |
s  Orb spider |
12 | 29 | 0% | 0% | 0% | 0% | 0% | 6.76% | 19.83% | 27.31% | 18.8% | 17.64% | |
s  Tarantella |
13 | 29 | 0% | 0% | 0% | 0% | 0% | 0% | 6.31% | 19.86% | 23.93% | 22.45% | |
s  Wolf spider |
15 | 29 | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 12.14% | 29.25% | 27.44% | |
y  Ghost moth |
21 | 27 | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 6.17% |
Strategy
- A sack of spiders is nearly useless without at least 8 or so levels of Evocations. If you haven't put in the training, don't expect any results from this beyond a couple of quickly destroyed meat shields.
- Be careful where you move after using a sack of spiders. Stepping into one of your own generated web traps is a good way to earn yourself YASD.
History
- Prior to 0.19, sacks of spiders didn't stack.
- Prior to 0.18, there were giant mites, spiders and trapdoor spiders summoned if you evocation was still low.
- In 0.15, the webs created when evoking a sack of spiders will target enemies, rather than being placed randomly.
- Sacks of spiders were added in 0.13.
