Channeling is the supernatural ability to draw energy from other living beings, the forces of nature and the earth itself to perform magic.
As magic is essentially a form of energy, it cannot be created or destroyed, meaning it can only be changed from one form into another. Witches and warlocks can call on their own magical power to practice witchcraft, however, when performing powerful incantations, they may need to draw on the energies around them.
Witches and warlocks can draw power from all living things around them and even the earth itself. Additionally, they can draw power from celestial events such as the Full Moon, which has special meaning to the supernatural.
Witches and warlocks can draw power from each other to increase their magical energy. For this reason, witches often gather in covens to increase their strength.