Mysteries/Spellcasting: At each level beyond 1st, you gain new mysteries or spells per day and an increase in caster level (and mysteries or spells known, if applicable) as if you had also attained a level in a casting class to which you belonged before adding the prestige class level. You do not, however, gain any other benefit a character of that class would have gained, such as bonus feats for mystery paths known, or improved familiar for wizard or sorcerer. If you had more than one casting class before becoming a child of night, you must decide to which class to add each level for the purpose of determining mysteries or spells per day, caster level, and mysteries or spells known.

Cloak of Shadows (Su): Your flesh takes on a hazy, almost translucent hue, granting a bonus equal to your child of night level on Hide checks. At 4th level, once per day as a swift action, you can make your outline shadowy and indistinct, as the blur spell, for a number of minutes equal to your class level. When you reach 6th level, you can use the blur effect three times per day. At 8th level, your form permanently becomes hazy and you continually have a blur effect. At 10th level, two times per day as a swift action, you can make your true location more difficult to discern, as if you were affected by the displacement spell, for 10 rounds.

Cold Resistance (Su): At 1st level, the shadow in your essence provides cold resistance 5. This resistance increases to 10 at 5th level and 15 at 9th level.

Sustaining Shadow (Ex): Starting at 2nd level, you lose various biological needs, as you draw power from the Plane of Shadow. This functions as the shadowcaster ability described on page 113, except new abilities are gained at 4th, 6th, and 8th level. If you have the sustaining shadow ability from a different class (shadowcaster, for example), you automatically gain the next sustaining shadow ability.

Dancing Shadows (Su): At 3rd level, you can use the dancing shadows mystery as a supernatural ability once per day with a caster level equal to your class level plus your levels in any other mystery-casting class. At 7th level and above, you can use dancing shadows twice per day.

Night Form (Ex): For 1 minute per day, you can become incorporeal, and gain all the benefits of the incorporeal subtype. You also gain a fly speed of 40 feet with perfect maneuverability.