Basic gist of the deck is a pseudo control/reanimator deck that gets to abuse Caiphus and his battle skills. Both dark return and Grasp let you resummon him to add even more battle skills to his arsenal whilst Honor of the fallen let’s you turn any of your units into a machine if you have Caiphus in the void. The JPS control shell is pretty effective at stalling aggressive decks and whilst you only have Harsh Rule against big time decks, it’s not too bad. You could try adding more spot removal such as slay/vanquish but that would mean dropping some slots from the reanimator package.
Overall a really fun deck to play once it gets going!