fluorides would not be a good halogen donor, fluorine is extremely electronegative. if anything bromides or iodides would be better. I think iodides readily decompose to the respective oxide and the halogen when heated sufficiently (although i could be wrong about this)
mix it with glycerin (a couple of drops of it will do) and it will spontaneously combust...a mix of sulphur, permanganate and some kind of metal powder, with a few drops of glycerin placed on it should be pretty nice
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