Web

A permanent web proves of limited value as a building material unless you happen to be an intelligent monstrous spider. However, it makes a good trap.

While it’s tempting to cover the outside of your stronghold with permanent webs—perhaps giving rise to local rumors that you’re some kind of spider worshiper—such spells don’t prove that useful if someone already knows of their existence. Intruders can easily burn them away, reducing your investment to ash.

Instead, put such things in the bottoms of shallow pits, especially if you are intent on capturing intruders rather than killing them. Alternatively, you can spread them across roofs to entangle airborne invaders, or even along the tops of outer walls to ensnare intruders as they top the battlement.

In any case, given enough time, most intelligent creatures can get free from a web. The obstruction is only there to slow intruders down and hold them still for a while. As such, you should put an alarm or magic mouth in the same locales. Optionally, your guard should patrol such areas regularly.

Casting: 60 gp (Wiz3) or 80 gp (Sor4)

Permanent: 5,500 gp (10th)