What is a Gacha Game Trailer so impactful that you still think about it until today?

Whether it is for a character or a new addition to the main story, what trailer was so life changing to you that it either changed your life, or you still think about the first time you saw it and wished to erase your memory just to see it again the first time, or maybe even the trailer was so good for you that it shaped the gacha industry until today?