The Fire Arrow is a special type of missile weapon that causes the Burning status effect when it hits a target.
A wooden arrow with a head soaked in flammable material. When this arrow hits an enemy, it ignites the target. According to the string resources, “This arrow looks just like a normal one, other than a warm red light radiating from its head.”
Fire Arrows can be created by using a Potion of Liquid Flame on regular Common Arrows. This process is called “moistening” and transforms the basic arrow into one with special properties.