In Pathfinder, there are two mechanisms for making a wondrous item have a continuous effect:
- Creating the item in conjunction with the Permanency spell
- Creating the item to have a use-activated or continuous spell effect
What is the difference between these two approaches?
To be concrete, how would I Craft something like a Bag of Holding (CL9) in each of these two approaches, in detail?
The first approach would be cheaper and quicker, but would probably require a higher-level caster, and would be limited to the spells that can be made Permanent. The second would be more expensive, but could be done earlier (e.g. with a higher-level scroll).
1st Approach: I would cast the Secret Chest spell on a bag, then cast Permanency on it before the spell duration was over. Permanency has an associated cost, but Secret Chest is not listed. (Is this approach even possible, then?)
2nd Approach: I would pay for the Secret Chest spell (spell level 5, caster level 9). The cost is then (SL==5)(CL==9)(2000 gp) == 90,000 gp.
The 1st approach would appear to be much cheaper, given the costs in the Permanency spell description. That approach might not be possible, however, since Secret Chest is not listed as a spell that can be made Permanent.