You are able to physically bring yourself and your allies into the dreams of others. In doing this, you are able to access the subconscious and explore realms of one's mind. While within their mind, you can help them or harm them mentally.
Helping an individual involves a DC 26 Etiquette or Persuasion check or alternatively a Seduction check can be made (-5 to the DC if they are attracted to your sex, if not +5 to the DC). A successful skill check will restore their Sanity by 1 point plus 1 for every point over the DC you got.
Harming an individual involves an Intimidate, Trickery, Seduction, or Philosophy check against the individual's Mental Defense. A successful check will reduce their Sanity by 1 point plus 1 for every 2 points over their Mental Defense.