This sound comes from Clash Royale and is labeled in the audio metadata as an evolved Mega Knight attack voice clip. As card evolution content became a recognizable part of the game, short unit sounds like this started showing up in gameplay edits, meme compilations and quick reaction posts. Creators keep using it because the Mega Knight already has a strong reputation among players, so even a brief audio cue can signal pressure, impact and chaos without needing extra context.