This ritual creates a ward around you that warns you about scrying in your area. You become automatically aware of any scrying sensors that perceive you. This awareness wakes you if you are asleep. When you become aware of a sensor in this manner, you can choose to destroy it and end the ritual that created it, unless the sensor or the creature is higher level than you. You can also choose to observe the creature that created the sensor, using your Arcana check result to determine how long you can observe that creature.