Due to the hypnotic and distorting effects of a scitalis's colorful pattern, creatures that can see the dragon take a penalty on attack rolls against it equal to the dragon's Charisma modifier (a -2 penalty for a typical scitalis). As a standard action, a scitalis can enhance the pattern, causing all creatures within 60 feet of it that can see it to become stunned for 1d4+1 rounds (Will save DC 23 negates). Prismatic pattern is an illusion (pattern) effect. The save DC is Constitution-based.