Staff of the Woodlands

Staff of the Woodlands is an enchanted quarter staff +4 that can only be used by druids. This weapon inflicts 1d6 +4 points of damage, has -4 THACO bonus, it weighs 2 lbs and the staff has a speed factor of 1. This weapon gives the wielder the effect of Barkskin, which raises the armor class by 3 points. The weapon gives the wielder to use the abilities of Summon Shambling Mound and Enhanced Animal Charm, which lasts 5 minutes and must be made with a -4 penalty. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition. It's not known where this weapon can be found.

In-game description
"Staff of the Woodlands Known only as the "Wild Man of the Wood", the man that carried this staff was a legendary figure near Trademeet until the day he died and returned to the soil. Those who saw him remember his dark, bark-like skin, a feature that would fade if the staff were set aside. He would harass irresponsible loggers and poachers, and old-timers tell of mercenaries chasing him with a dozen hunting dogs or more. The animals seemed ready to rip the poor druid to pieces, but he quickly turned them on their former masters.  Rushing forward in hopes of ending his influence, the men-at-arms saw the final power of the staff, and as the vegetation trembled with the "Wild Man's" magical calling, there formed a green, rotting mix of life and death that shambled overtop of the terrified soldiers, killing them all."