I have some questions relating on crafting magic device traps. My PC is a 6th lvl Wizard with create woundrous item feat. And I want create an "Automatic Reset proximity(Alarm) Lightning Trap with CL 5" to secure a dungeon corridor.
Could anybody confirm all following points:
1. Cost: 7500 Gp (500 * SL * CL)
2. Perception DC: 28 (25 + SL)
3. Disable Device DC: 28 (25 + SL)
4. Reset : every Round
5. Creation DC : 10 (5 + CL)
6. Creation Skill : Spellcraft and NOT Craft(Traps)
7. Creation Time: 15 Days (500 Gp per Day)
In particular I'm not sure if a reset is performed every round. I have not found a rule.
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I assume you mean the lightning bolt spell?
On page 424 of the core rulebook, table 3-15: cost modifiers for magic device traps
Automatic reset trap:
Each spell used 500gp*caster level*spell level
So 500*5*3 = 7500g. That looks good so far, assuming you're casting the spells for it yourself.
However, you need to determine the kind of trigger you're going to use. That may end up modifying the final price. For example, a visual trigger requires the casting of one of three spells, and that will increase the cost.
The perception dc looks right, depending on the trigger type again, as does the disable device dc.
Reset would be automatic reset. You can have it reset once a round, or increase the delay if you wish.
The save dc for the trap is set to (10+spell level)*1.5 so for this trap the dc is 19 for half.
If you're using alarm for the trigger, as seems implied, then everything is perfect.
The creation dc seems fine as well.
It's a magical device trap, so you're using wondrous items (spellcraft), and not craft traps.
creation time looks good, again depending on your trigger method.
The trigger method is an alarm spell.
What about an automatic reset cure light wounds trap inside a portable hole? It would cost 500 Gp. Is it possible?