Spear of the Unicorn

Spear of the Unicorn is an enchanted spear +2, which can inflicts 1d6 +2 points of piercing damage and it has -2 THACO bonus. The weapon gives the wearer protection against status effects of charm and hold person. It also gives the wearer a -3 saving throw bonus vs. death. The spear weighs 3 lbs and it has a speed factor of 4. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition. It can be found in the Troll Mound in the Druid Grove area near Trademeet.

In-game description
"Spear of the Unicorn +2 This graceful spear is carved to resemble the elongated horn of the unicorn. Wielders of this spear are immune to charm and hold spells, just as a unicorn might be. Whether the horn is or isn't an actual unicorn horn is the subject of much debate."