Powerful Anime Music

Hi Im looking for powerful Sound Tracks in/of anime. That can be an Opening/Ending Theme Song or just OST. For Example: Youjo Senkis Openinghttps://www..com/watch?v=xbdAM3WMn8 Kamukeiki Valvraves Openinghttps://www..com/watch?v=4GC5RvCFs An OST Track of Owari no Seraph Starting at 2:20 http://67.159.62.2/animeost/owarinoseraphoriginalsoundtrack/pdrytywz/132020Dasshutsukou.mp3