Fiery Quiver 2014
3rd-level transmutation
You enchant a quiver of ammunition with a fiery boon. For the duration, ammunition drawn from this quiver deals an extra 2d6 fire damage on a hit. Only one piece of ammunition can be affected at a time, and the spell ends after 6 pieces of ammunition have been used or if you cast the spell again.
At higher levels
When you cast this spell using a spell slot of 4th level or higher, the number of pieces of ammunition you can affect with this spell increases by one for each slot level above 3rd.
Source: Spells That Don't Suck (Somanyrobots) · License: Creative Commons Attribution 4.0 details