Psychic Reflection

Pathokinesis is the ability to amplify a person's emotions, as well as those of others, and forcibly reflect them on to that person, to such a degree that it floods their mind and makes them feel the emotions desired. This causes the brain to be overloaded with emotions, feeling whatever emotion is reflected on them and can result in death. It is a more advanced and intense form of empathy.

When Phoebe Halliwell used this advanced form of empathy, it caused for tiny bolts of lightning to appear from her hands to the temples of the head of the victim. However, when Prue first demonstrated this ability she was able to control it through her astral projection power.

Prue Halliwell vanquishes Vinceres
In 2001, Prue destroyed a demon named Vinceres, when she temporarily accidentally gained the power of empathy. However, Prue astral-projected herself into Vinceres's body, forcing him to feel all of the emotions that she had been experiencing. The emotional baggage overwhelmed him and literally tore him apart; vanquishing him.

Phoebe Halliwell kills Cal Greene
In an alternate future of 2009, Phoebe Halliwell used this ability to kill Cal Greene, the baseball player. Greene had killed one of her close friends. Taking revenge, Phoebe snuck behind Cal and placed her hands at each side of his head. As she used this power, little sparks and energy bolts emanated from her hands into Cal's head and killed him upon impact. It was thought that the method of killing Cal was a form of Electro-Mental ignition until Phoebe realised how she really killed him.