When you injure, intimidate, or frighten someone, you may mark them as your prey. If you do, roll your Knack Skill and bank the successes. You gain access to the following Stunts, which can only be used by spending these banked successes. If you declare another character to be your prey, you lose any previously banked successes.
No Rest for the Wicked (2 successes): Your prey is unable to fall asleep naturally, inflicting the insomnia Condition, which prevents a character from sleeping and inflicts +1 Difficulty on complex mental action, or +2 if they haven’t slept in more than two days. This Condition resolves in 72 hours, or after eight hours of rest under the effects of prescription-grade narcotics.
Under the Bed (4 successes): You appear near your prey the next time they enter a place of refuge and safety.