Place it just before the reveal in an edit, so the announcement sets up what follows. Follow it with a short reaction such as the Bruh sound for a flat anticlimax, or with an Oh My God clip when the reveal is bigger than expected.
About this sound
An 18-second Portuguese spoken clip in which Ednaldo Pereira calmly explains what can be expected, his measured delivery turning a simple preview into something oddly suspenseful. It feels deadpan and expectant, like a straight-faced announcement before a big moment, and the slow, deliberate tone makes the wait itself feel like the point.