Okay, this is rather cheesy, but I figure I'd ask everyone's opinion anyway. In Song and Silence, there's a 2nd-level bard spell called
fortissimo. It can be cast on either a creature or object and increases the DC of sonic or language-based attacks by +2 and the sonic damage by +1d6 points (if the creature or object has an attack that deals damage).
Now, it's pretty obvious that if Phaeder casts this on himself, then casts
shout, the save DC for the spell would go up by +2 and he would deal 6d6 points of sonic damage instead of 5d6.
However, if he casts this on his
+1 screaming bow instead (which deals sonic damage), would it do +2d6 points of sonic damage instead of +1d6 with every arrow he shoots?