You become obsesses with one Survivor.  When your obsession is hooked, Furtive Chase receives a token, up to a maximum of 4 tokens.

Each token decreases your Terror Radius by 4 meters while in a chase.

When a Survivor rescues the Obsession from a hook, the rescuer becomes the Obsession.

Fresh blood marks are considerably more discernible than normal and can be tracked for 4 seconds longer than normal.

After hooking a Survivor, Pop Goes the Weasel activates for the next 35/40/45 seconds:

Performing the Damage Generator Action on a Generator instantly regresses it by -20 percent of its current Progression, after which normal Regression applies.

"After vaulting a Window, Bamboozle calls upon The Entity to block that Window for the next 8/12/16 seconds.
- Blocked Windows cannot be vaulted by Survivors."