Wizardry

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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 spell failure by 25%, two sources by 33.3%, and three by 50%. This is a subtractive bonus, though applied before a stepdown. Actual decreases will be smaller, especially as your failure rate gets smaller.

In addition, Vehumet applies two sources of wizardry (33%) to destructive spells. This bonus stacks with wizardry from other sources.

Note that in no case can failure rate of a spell be reduced by better than half using wizardry.

History

• Big Brain was introduced in 0.27.
• Prior to 0.25, potion of brilliance provided a temporary wizardry bonus.
• Prior to 0.14, 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.