All the exs get their own Full Art, and the deliberate colour clash of back and foreground for most of them really makes them stand out the Ninetales ex Full Art looks like it has been carved out of butter though
Sultai Ascendancy turns every single one of your draw steps into a Preordain with the upside of filling your graveyard
The sacrifice theme likely comes from death triggers on cards like Undead Augur, which conveniently ties both themes together, and removal and card draw spells that make you sacrifice creatures as an additional costthink Bone Shards and Village Rites
And once you're a black-red deck with Heartless Summoning, you really can't do anything better than cast more Demons anyway
There were some reprints, sure, but thats still quite a bit
The fifth toughness in a format with multiple pieces of four-toughness removal is a good start for example