Easy Math

Song and Silence: A Guidebook to Bards and Rogues (SaS)Updated Supplementals (3.0)

Easy Math is a D&D 3.5 spell (Transmutation) from SaS. Range or area: Personal; Saving throw: None (see text); Duration: 1 round; Casting time: 1 standard action.

School
Transmutation
Casting Time
1 standard action
Components
V, S
Range
Personal
Target
The caster
Duration
1 round
Saving Throw
None (see text)
Spell Resistance
Yes (harmless)

This minor magical effect makes counting and calculating a breeze.

You can estimate the number of gold pieces in a pile, the distance of a gap you might have to leap, the number of foes rushing toward you, or the like—all in a flash. To make such an estimate, make a Perform check (DC 15).

Success means your guess is within 10% of the true figure; failure means it is off by 20% or more. The exact extent of such a miscalculation is up to the DM.