Spells are the medium by which every witch must use in order to achieve a magical effect. Spells vary greatly in their composition and requirements, but are essentially a supernatural method with the power to produce a desired result. What these results are range from modifying one or more aspects of reality to reshaping the very nature of an entire location. It is also known that particularly powerful spells requires the caster to have a considerably high level of experience in order for the spell to be successful.