Great mallet of Silvanus

The great mallet of Silvanus was a magical mallet wielded by the Young Strider avatar form of the Faerûnian power known as Silvanus.

Powers
This weapon originally had a +5 enchantment, but in later years was reduced to being +2. Its wielder could also cast call lightning once per minute, shoot out a fast-flowing stream of water out to in a cone that was  in a diameter, or call upon Silvanus's unshakingly faithful wolfhound.

This wolfhound had a low level of intelligence, above that of the average wolf. It slowly regenerated over the course of a battle. And not even controlling magics or psionics could break its loyalty to Silvanus.