Farmer villagers before Java Edition 1.8 would trade flint and steel for emeralds. If a world was created before this version, such a villager can be brought forward to current versions and still traded with as a renewable source of flint and steel.
When used on top of a solid, fully opaque block or on the sides of a flammable block, the flint and steel set a fire on the surface on which it was used. Flint and steel have 64 uses. If used on a transparent block (such as glass) or an underwater block, it does not start a fire but still consumes durability. Durability is also consumed if it is used on an already existing fire.
This page would benefit from the addition of more sounds.
Please remove this notice once you've added suitable sounds to the article. The specific instructions are: There is within the possible realm a different use sound from 2015-era Pocket Edition, can this be uploaded?