Wizardry

Version 0.34: This article is up to date for the latest stable release of Dungeon Crawl Stone Soup.

Wizardry refers to items and effects that directly reduce the chance of failure when casting spells. These are provided by rings, the demonspawn mutation Big Brain, and Coglin gizmos.

Useful Info

With at least one source of wizardry, your raw spell failure is multiplied by 6 / (7 + sources). This is applied after calculating spell failure from skills and other modifiers, though failure is modified by a further modifier. Generally, the actual decrease to failure rate will be larger than the raw decrease. For example, wizardry x1 will bring actual failure rates from 80% -> 45% (×56%), 50% -> 22% (×44%), or 15% -> 6% (×37.5%).

There is no hard limit to the amount of wizardry that can apply at once.

Certain effects, such as Vehumet's destructive spell boost, are not considered wizardry, but they stack multiplicatively with wizardry.

Table

Wizardry	Raw Fail Multi.	Wizardry	Raw Fail Multi.
Wizardry x1	75%
Wizardry x2	66.67%	Vehumet	66.67%
Wizardry x3	60%	Vehumet + Wiz x1	50%
Wizardry x4	54.55%	Vehumet + Wiz x2	44.4%
Wizardry x5	50%	Vehumet + Wiz x3	40%

Strategy

Wizardry is useful as it allows casters to access spells earlier. The first level of wizardry provides the biggest bonus, and any wizardry past that has a greatly diminished return.

See Also

• Spell success for details on how wizardry affects failure rate.

History

• Prior to 0.31, there was a raw failure multiplier cap of 50%. This meant you could only have 5 sources of wizardry apply at once, or Vehumet and 1 source of wizardry.
• Big Brain was introduced in 0.27.
• Prior to 0.26, staves of wizardry existed, which gave a rank of wizardry.
• Prior to 0.25, potion of brilliance provided a temporary wizardry bonus.
• Prior to 0.14, a staff of wizardry granted a better wizardry bonus than a ring of wizardry.