Darkfire Bow

Darkfire Bow +4 is an enchanted short bow which offers a 5% bonus to fire and cold resistance. Also, this bow allows the wielder to use this bow once per day to use Improved Haste upon him- or herself. This item appears in Baldur's Gate II: Throne of Bhaal. It can be gained in Amkethran if the commander and his group of seven archers are killed.

In-game description
"Through arcane sorcery, the contradictory elements of fire and ice have been combined within this magnificent short bow."