The Secrets Behind These Magic Tricks Will Ruin the Illusion for You

Smoking fingers

With this trick, the magician wows the cloud by producing smoke from his hands out of nowhere. It would appear that the mere friction from putting their fingers together can cause smoke.

Source: The Delite

But this is actually a trick that can be dangerous if you are not in control. This will require you to put leftover phosphorus from a lit match and then apply it to your fingers. When you rub your fingers together it would re-enact the friction that happens when striking a match.