Sack of spiders

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Type	Miscellaneous item
Name	sack of spiders
Icon

A woven silk bag. Something appears to be moving inside... Opening this bag will release a number of spiders friendly to your cause. You might need to dust off the cobwebs after, however.

A sack of spiders is an evokable item which, when used, generates a Spider's Nest-themed group of friendly monsters, and also generates webs under hostile monsters in LOS. Evocations skill effects both the power of the summons as well as the number of summons. Each sack generates with 5-15 charges, and cannot be recharged in any way.

Stats

Every one out of five evoke attempts fail. One to three summons are guaranteed per evocation, alongside another 1d(skill / 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
s Giant mite	0	10		16.67%	15.18%	7.66%	1.79%	0%	0%	0%	0%	0%	0%
s Spider	0	15		83.33%	84.82%	52.68%	21.54%	7.53%	1.48%	0%	0%	0%	0%
s Trapdoor spider	5	20		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	12	27		0%	0%	0%	0%	7.09%	22.28%	28.57%	22.49%	15.48%	14.53%
s Orb spider	15	27		0%	0%	0%	0%	0%	6.76%	19.83%	27.31%	18.8%	17.64%
s Tarantella	18	27		0%	0%	0%	0%	0%	0%	6.31%	19.86%	23.93%	22.45%
s Wolf spider	20	27		0%	0%	0%	0%	0%	0%	0%	12.14%	29.25%	27.44%
y Ghost moth	25	27		0%	0%	0%	0%	0%	0%	0%	0%	0%	6.17%

History

Sacks of spiders were added in 0.13.