Wizardry
Wizardry refers to items and effects that directly reduce your chance of failure when casting spells. These are provided by rings and the demonspawn mutation Big Brain.
A single source of wizardry decreases raw spell failure by x75%, two sources by x66.6%, and three by x50%. This is a multiplicative factor, applied after calculating spell failure from skills, though failure is modified by a further modifier.
Generally, the actual decrease to failure rate will be larger than the raw decrease.[1] However, keep in mind that wizardry is a multiplier. For example, wizardry x1 will bring a spell from 15% -> 10% failure; that's a x67% reduction, but the differences between 15% and 10% failure is quite low in practice.
In addition, Vehumet applies two sources of wizardry (x66.6%) to destructive spells. This bonus stacks with wizardry from other sources.[2]
History
- 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.
See also
- Spell success for details on how wizardry affects failure rate.
References
- ↑ This is true when your (post-wizardry failure rate) < 50%. Smaller the failure, the larger the % decrease.
- ↑ spl-cast.cc:335 (0.30.0)
