Combustion/ Set Alight

using this spell casts a small electric bolt, this bolt doesn't do much on its own but it can ignite gunpowder or oil to either explode or burst into flames. it cannot ignite things that are made out of thick material such as wood logs or stone, but it can ignite powders and liquids, ignite a pile of wood chips or ignite some oil or alcohol to make a small fire. the spells effects depend on how much of that substance is there, for example if there is a quarter size amount of gunpowder in a small flask on an enemy, you could ignite it causing a small explosion to disoriate the target and cause minor damage. same thing would happen if it was oil except it would catch fire and break the flask. the bolt cannot travel through materials that don't conduct electricity like stone or wood but if there was a long copper pole or some metal that can conduct electricity the bolt would stick to the metal for an hour making a small electrical charge.