For the next hour, you take on some characteristics of a shadow thanks to a fundamental adaptation of your flesh or a device you’ve kept secret. Your appearance is a dark silhouette. When you apply a level of Effort to sneaking tasks, you get a free level of Effort on the task. During this time, you can move through the air at a rate of a short distance per round, and you can move through solid barriers (even those that are sealed to prevent the passage of light or shadow), but not energy barriers, at a rate of 1 foot (30 cm) per round. You can perceive while passing through a barrier or object, which allows you to peek through walls. As a shadow, you can’t affect or be affected by normal matter. Likewise, you can’t attack, touch, or otherwise affect anything. However, attacks and effects that rely on light can affect you, and sudden bursts of light can potentially make you lose your next turn.