Spiderwalk

Warlock Invocation
Level: Least, 2nd lv.
Components: V, S
Casting Time: 1 standard action
Range: Self
Duration: 24 hours
Saving Throw: None
Spell Resistance: No

You can grant yourself the ability to spider climb (as the spell) with a duration of 24 hours. While this invocation is in effect, you are unaffected by webs (either mundane or magical).

(Complete Arcane, Page 134)