Flame of Faith
Using your faith as a guide for your magic, you touch the weapon and it bursts into flame.
(Spell Compendium, p. 95)
Originally posted on D&D tools
You can temporarily turn any single normal or masterwork melee weapon into a magic, flaming one. For the duration of the spell, the weapon acts as a +1 flaming burst weapon.
Material Component: A lump of phosphorus, touched to the target weapon.