>>37910469>variety of nonstandard time signatures to keep the listener on their toes>key changes to keep the music somewhat varied for its long runtime (just a halfstep up for the last 30-40 seconds or so, but that's more than the majority of battle themes in pokemon)>ties in nicely with spear pillar theme>near perfect mixing>2 minute loop, all of which manages to keep the same clear identity without sounding like it's overstayed its welcome>all of this while refusing to fall for the generic "wow cool" atmosphere, instead chosing to be audially distinct with a slightly more whimsical approach that still has serious rootsI understand that it's hard for people like you to like anything that isn't Le Epik and Cool!!!, but there's more to battle music than the tired atmosphere and tropes present in Ultra Necrozma.
Dialga's Fight to the Finish is fairly good too, but it's not particularly unique, to the point where it was completely outclassed by Dark Matter (Phase 2), which is from the same spinoff series (and merely two games after as well, not including the wiiware titles). The closest we've gotten to a theme similar to Dialga and Palkia's is the Tao Trio's, which goes much further into the whimsical end.