Pool of Twilight (Forgotten Realms Series, Book No 3)

The holy hammer of the Church of Tyr was captured by the evil god Bane two decades ago. When Bane was destroyed, the relic vanished. The legacy of recovering the lost item was granted to a paladin before his birth. Now the young warrior must fulfill his destiny and return the enchanted hammer to the forces of good in the land of the Moonsea. Danger, deception, and loyal friends will accompany him on his fateful journey.