You coat your body with a resinous substance, protecting you from attacks and binding weapons that strike you. You gain DR 5/piercing, as well as a +4 circumstance bonus to your CMD against disarm attempts and on saving throws against effects that cause you to drop something you are holding. Additionally, you gain a +2 circumstance bonus on combat maneuver checks to initiate a grapple, maintain a grapple, and pin a foe. Any enemy you grapple takes a –2 penalty on attempts to break the grapple and to escape the grapple using Escape Artist. Any weapon, that strikes you becomes stuck unless its wielder succeeds at a Reflex saving throw. Such a weapon can be pulled free of you only with a successful Strength check (DC = your saving throw DC for this spell). This spell has no effect on unarmed strikes or natural weapons.