Nightengale form's serenade inspires deadfalls and such.

Your serenade concludes with a loud whistling crescendo! A falling log is inspired by the beauty of your serenade. The Huntress is inspired by the beauty of your serenade. It also does this to things like snares and druid brambles. It's nothing major, but every extra target inspired seems to give it another line of +hit/dam, so the extra targets have some tiny affect on gameplay that way.