Sling of Seeking

Sling of Seeking is an enchanted sling +2 which has +2 bonus to damage and a bonus depending on the strength of the character, -2 THACo bonus 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 bought in the Copper Coronet after completing Free Hendak and the Slaves side quest.

In-game description
"Sling of Seeking Unlike most other slings, the Sling of Seeking is capable of throwing stones and allowing a strength bonus to be applied to the damage it inflicts. Although the sling is magical, giving it a bonus to hit and to damage, it is capable of inflicting strength damage due to its design, not magic."