Random Selection. The magic of working with backflow incense: Incense is super charged magic because it's also a form of smudge. The smoke fills your sacred space, raising and changing the energetic vibration and carrying the old world magic, the medicine of our ancient ancestors into our present day. Smudging and burning incense is an integral part of my spiritual practice, and I have incorporated a lot of the ancient aromatic ingredients into the products I offer here at Practical Magic. Backflow incense burners and pulls the smoke down through the bottom of the incense cone, dripping the smoke out and down the backflow burner. You insert and light your backflow incense cone, and watch as the smoke starts to swirl and pull downward, creating an incredible reaction within the burner. You will notice that backflow incense cones have a hole at the bottom of them, allowing the smoke to flow down through the opening at the bottom of the cone.