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SYSTEM REFERENCE DOCUMENT 3.5

 
Magic Device Trap Cost

Building a magic device trap involves the expenditure of experience points as well as gold pieces, and requires the services of a spellcaster. Table: Cost Modifiers for Magic Device Traps summarizes the cost information for magic device traps. If the trap uses more than one spell (for instance, a sound or visual trigger spell in addition to the main spell effect), the builder must pay for them all (except alarm, which is free unless it must be cast by an NPC; see below).

The costs derived from Table: Cost Modifiers for Magic Device Traps assume that the builder is casting the necessary spells himself (or perhaps some other PC is providing the spells for free). If an NPC spellcaster must be hired to cast them those costs must be factored in as well.

A magic device trap takes one day to construct per 500 gp of its cost.

Table: Cost Modifiers for Magic Device Traps

Feature

Cost Modifier

Alarm spell used in trigger

One-Shot Trap

 

Each spell used in trap

+50 gp x caster level x spell level,

+4 XP x caster level x spell level

Material components

+ Cost of all material components

XP components

+ Total of XP components x 5 gp

Automatic Reset Trap

 

Each spell used in trap

+500 gp x caster level x spell level,

+40 XP x caster level x spell level

Material components

+ Cost of all material components x 100 gp

XP components

+ Total of XP components x 500 gp

 

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