Put it at the end of a build-up, just before the action starts, after Enemy Spotted has introduced the threat. Follow it with Inception Horn to widen the moment, then cut straight to gameplay so the warning leads directly into the fight.
About this sound
A short, forceful voice line from Street Fighter V, lasting about a second and a half, in which the speaker declares that heaven and earth tremble. It gives a listener a sudden sense of scale and menace, as if a much larger fight is about to begin. The line works as a warning before a powerful entrance or attack.