Shield of the Dire Worm
+2 acid resistant heavy wooden shield (small)
This plus +2 shield heavy wooden shield (small) gives the wearer acid resistance of 10.
Also once per day, as a free action, the shield can be commanded to place a damage shield around the wearer for 10 rounds which deals 1d6+10 damage for each successful melee attack that hits the wielder.
Crafted from the tooth of the great purple worm this shield was imbued with both the protection and defense of the worm, along with the electricity that was prevalent in the death of the giant creature.