Arrow +2

Arrows +2 have +2 thaco bonus in all games, but the +2 bonus to damage is not added in Baldur's Gate II: Shadows of Amn. Without the bonus to damage, it inflicts between 1-6 points of damage. This item also appears in Baldur's Gate and Baldur's Gate: Enhanced Edition.

In-game description
"These arrows were enhanced through magical means when they were created. They appear slightly straighter then the average arrow, almost alive as they effortlessly leave your bow and streak towards their target with deadly accuracy."