Rakdos, the Muscle cares about sacrificing creatures, naturally, and you benefit when your nontokens go under the axe
Because it is only then that you know you are playing Commander the way it was meant to be played.
Its limited by being a sorcery, sure meaning you need to be the one killing creatures off but it makes up for it by being lethal in the same way as Monumental Corruption
Its powerful, but only if you have cards supporting it, because its only a two-mana 1/1
Outside of the set, treasure has taken up residence in many a deck, along with other artifacts you might want to sacrifice
Carnifex Demon: Hes new and exciting and goes with the proliferate subtheme