Alright, I spent the week getting up to speed with Satan's newer albums. Had heard Cruel Magic previously, but not Life Sentence or Atom by Atom, so take my votes with a grain of salt.
This is actually pretty hard to pick six, there isn't really any filler tracks out here and I found I had to listen pretty closely before I started nitpicking. I guess that is a testament to Satan's consistency as a band over entire albums.
In my opinion Satan are at their best when they are write sophisticated melodic passages or riffing styles that are both ferocious and intricate. They are obviously at their very best when they combine both. To me they are mostly successful at mixing the "intellectual" melodic style of the American bands of the from the 1980s and the rougher, more aggressive style of the NWOBHM bands.
Any way, I don't hate any of these but the six I'd eliminate are (in no particular order):
Twenty Twenty Five - chorus is a bit cringey, maybe I'm misinterpreting it, but it doesn't seem as ominous when you are singing about something only a dozen years away?
My Own God - Again, not a fan of the lyrics, more obviously derivative than anything else I noticed on here
Who Among Us - 6 minute plus heavy metal songs are hard to pull off, this has diversity of its parts, but as HamburgerBoy said, they don't seem to quite gel, it's not far off though.
Fallen Saviour - There is something awkward about the flow of this song, it does not seem natural for some reason, not sure if it is something to do with the timing or tempo, or if it is the chord selection and interaction with the hammer on/pull of type playing in the main riff.
Cenotaph - probably the most simplistic "banger" on here, I can see why this might be a controversial pick, because the main riffs are actually really good, but the main structure of the song is not as imaginative as most of the album, it's mainly just an alternation between the melodic style and the faster, rhythm based riffing. These types of songs are at risk of not ageing as well perhaps.
Testimony - more a process of elimination at this stage, this type of song is probably a "grower" but doesn't stand out as much at this point. The approach is very melodic and not as aggressive as a lot of the other songs on LS.