Magic Weapon Abilities - Harmonizing
This enchantment can only be placed on melee weapons. A harmonizing weapon accompanies its wielder in song if drawn, granting a +6 enhancement bonus on Perform checks that involve singing. Beginning on the second round of singing, the harmonizing weapon begins to sing alongside the wielder. If the wielder stops singing at any time after the second round, the weapon continues singing for a number of rounds equal to the wielder's Charisma bonus or until sheathed. This extended singing is equivalent in effect to the wielder continuing to sing.
For example, a bard with a 16 Charisma could start singing for 1 round to inspire courage in his allies. In the second round, his harmonizing weapon would join in. If the bard stopped singing in. the third round, the harmonizing weapon would sing for up to 3 additional rounds, continuing to inspire courage in the bard's allies. If the bard restarted his song any time before the end of the 6th round, the harmonizing weapon would continue to sing with him, uninterrupted. (Restarting the song in this manner does not count as another use of bardic music.) If you start using another form of bardic music while your harmonizing weapon is maintaining a song, the weapon stops maintaining the first song and begins aiding the second.
Aura: Faint illusion
Caster Level: 5th
Requirements: Craft Magic Arms and Armor, ghost sound
Price: +1 bonus
City of Splendors: Waterdeep