Staff Spear

Staff Spear +2 is a staff, but when it is commanded by an alteration spell upon examining, a sharp point will shoot out of the upper end, transforming it into a spear. This item was made especially for wizards and priest, but like any staff, this weapon can be wielded by anyone. It's proficiency falls under staffs and thereby is a blunt weapon, not a spear. Because of the spearhead, it does piercing damage.

In-game description
"When this seemingly ordinary quarterstaff is examined magically, it has an aura of alteration. Upon command, a long sharp spear blade will shoot forth from the upper end, making the staff into a spear. This weapon was designed mainly for priests and wizards although it is usable by anybody."