This type of magic is based on the principle of "like attracts like" or "action creates reaction." Two different types or subgenres of sympathetic magic are Imitative Magic which uses imitation to achieve results (e.g., dolls, pictures, effigies) and Contagious Magic which assumes that things that have been in contact with each other still have a connection and can transmit energy (e.g., hair, blood, personal belongings).