I attempted to create an energy arrow, which is an arrow that shoots straight and fast (like teleport) and sets anything it hits on fire. It didn't work, even though I copied the vanilla code and analyzed it thoroughly. I also created a bow which uses salt (I added an ore and an item for the salt) and will shoot these Energy arrows. So I'm kind I trying to make the Nightsister energy bow from star wars. If you don't know what it is, press http://starwars.wikia.com/wiki/Nightsister_energy_bow to find out)