Purgatory State

When a witch or wizard reaches a point in which they are extremely close to death, they may enter what can only be described as a 'purgatory-like state'. This enables the witch to form a connection with another person or even see through said person's eyes. The two people are then able to communicate with each other for as long as there is no disturbance in the connection (such as—but not limited to—death).

Instances of the purgatory state occurring

 * Chapter 19: The Salem Four
 * Ashton Moore enters the purgatory state following the infection received by the bite from Ursula. He slips into unconsciousness and then communicates with both Reg and Cassandra. He leaves the state when his arm is properly treated by Zeke
 * Chapter 22: Endure
 * Following the incident at the Rainbow Bridge, in which Mary Cassel held back the wave sent by Beatrice, she enters the purgatory state. Due to The Salem Four's closer proximity to Salem, she forms a connection with Cassandra, who uses the opportunity to show Mary the death of her and her family during the Salem Witch Trials.

Trivia

 * What causes the purgatory state is largely unknown.
 * Some of it may be a result of Cassandra's growing influence the closer the Salem Four come to her.