Black Seven knob candles (also known as wishing candles) can be thought of as analogues to knot magic - either building or releasing energy or the intent of the spell or ritual as each knob is burned through. Black 7 knob may be especially useful when used for protection, banishing, wisdom and for absorbing or projecting negative energy. Candle may require leveling to stand perfectly straight. Sizes, colors, and shapes may vary slightly.