All the energy in a ley line is of the same kind: an earth-magic ley line, a defensive-energy ley line, and so forth. In addition to the global magical field, there is a large number of localized currents of magical power, known as ley lines, all over the Earth. ДЄnastasia Luccio remarks that magical energy comes in a number of varieties, each aligned to a different use, such as defensive energy, or to the classical elements of Earth, Air, Fire, and Water. Once the pentacle is removed, however, magical energy floods back into the area. As the site is the location of an intense magical battle, the magical energy is eventually entirely depleted, making it impossible to cast any spells. In Small Favor, the Denarians use a large pentacle to isolate Shedd Aquarium. However, it is possible to isolate a limited area from the global field, which limits the amount of magic available in that area. That is, when a spell is cast, it doesn't deplete the local supply of magic, but rather causes a decrease in the strength of the field worldwide. The intensity of this field is the same at all points, and is always the same at all points. The abundance of life on Earth produces a field of ambient magical energy that encompasses the entire planet. There is energy aligned to each of the classical elements (earth, water, fire, and air), as well as defensive energy, and dark energy, which comes from malevolent spiritual beings. Just as there are different colors within the spectrum of visible light, there are different varieties of magical energy, each aligned to a different use. There is a broad spectrum of magical energies. Dresden claims his own magic is both more difficult to perform and more powerful because it comes from a deeper, truer, and purer source. Д«lack magic comes from negative emotions like lust, fear and anger, which are easy to harness. Related to this, are odic force and prana. It is also worth noting that powerful supernatural beings exude magical energy in much the same way that people emit body heat. Soulfire, used by the angels of the White God, allows them to do great magical works by using fragments of their souls as fuel. A magically- and emotionally-exhuasted Harry Dresden once powered a shield spell with nothing but the lust incited by the kiss of a White Court vampire. The souls and emotions of intelligent beings are also a source of magical energy. A death curse, for example, is a spell empowered with so much of a wizard's life-energy that not enough remains to keep his body alive. Magical energy is generated by living beings life-force itself is actually a form of magical energy, along with the human heart, soul and emotions. Waldo Butters asking Harry Dresden about the supernatural. Description Waldo Butters Is there a book or CliffsNotes to this stuff? Harry Dresden No, just me.

Dresden files mind magic