Your mind, to me, is an open book: full of big print and lots of pictures!
Empathy is a new Lesser Power, a type of mind-based magic relatively widespread across the Gossamer worlds. Many worlds feature psychic powers, whether commonplace, rare, or even thought imaginary.
Empaths can sense the minds of others from great distances, read surface thoughts, communicate telepathically, judge others' degrees of Psyche, and even mask their own Psyches, hiding from psychic detection. Empaths can mask pain or shift it away from others, and can speed the healing process. Furthermore, Empaths can dominate weak minds, rendering them open to suggestion. Vastly weaker opponents can be paralyzed physically or mentally.
Empathy comes with dangers, opening one's mind with another and forming an empathic link is a two-way street: a bridge between minds might turn into an avenue for an assault into the Empath's own mind.
Addendum: Empathy can be used in any game based on Erick Wujcik's Diceless Role-Playing, existing alongside powers such as Sorcery and making great use of the Pshcye Attribute. Allowing you to seamlessly enhance your new or existing game with a wondrous new discovery.