Place this clip at the end of the setup, just before the reveal shot, then follow it with a bass drop sound effect as the payoff lands. For a slower build, open with It Was At This Moment He Knew and save this line for the final turn.
About this sound
This short clip captures Optimus Prime saying "Time to find out" in a deep, metallic voice that sounds calm, certain and ready for a fight. It creates a tense, expectant feeling, as if something important is about to happen next. The line comes from Transformers: Dark of the Moon, the 2011 film in the series.