A witch is a practitioner of witchcraft. Witchcraft can be a magical art alone, not necessarily part of a religion. Probably the most obvious characteristic of a witch is the ability to cast magic spells. Spells can also be attached to physical objects. Sometimes quite simple and mundane actions can constitute the physical casting of a spell, and it is a common belief amongst modern witches that the intention behind the actions is at least as important as the actions themselves.