Place it at the reveal point of an edit, right before the subject appears on screen. Follow it with the FNAF Jumpscare Scream for a scare cut, or precede it with the Inception Horn Sound Button to raise the stakes before the entrance lands.
About this sound
A short four-second voice clip of a speaker delivering the line 'I've been waiting for you' in a slow, pointed way. It gives a listener a tense, expectant feeling, like a confrontation or reunion has been building for a long time and has finally arrived, which makes the moment feel dramatic rather than casual.