Tanglewood (Stronghold Augmentation)

Tanglewood: This augmentation can only be added to walls of wood or living wood. The wall animates and entangles (as the entangle spell) anyone approaching within 5 feet of the outside of a tanglewood wall.
Caster Level: 5th; Prerequisites: Craft Wondrous Item, entangle; Market Price: 2,500 gp.