The Nuwisha may

force an individual to see how the other side lives, rapping them smartly over the head and transforming them into a member of the opposite sex. A seahorse-spirit teaches this Gift.

System: The player spends a Gnosis point (and must roll Dexterity + Brawl or Melee, difficulty 6, to strike an unwilling target; this inflicts no damage). The transformed individual bears a close resemblance to their original appearance — they appear to be an opposite-sex sibling, rather than a wholly different person. This Gift’s effects last for (Nuwisha’s Humor) days.