Mono black devotion splashes white for obzedat cause i dont have any blood baron. The white allows me to use high priest who is great for aggro and cartel aristocrat sacrifice engine.
Dark prophecy combos well with abhorrent overlord and gives lots of devotion. I sac a creature and draw a card.
Obzedat cause hes great
Lifebane cause he looks at yer hand and has intimidate
Desecration demon for obvious reasons
Cartel Aristocrat to sac other creatures to stay on the board
Erebos cause he is good with devour flesh and is indestructible
Gray merchant for devotion wins
Pack rat cause hes good and i can discard to feed the whip
Whip, to whip my creatures that are sacrificed and to reanimate Obzedat
Nightveil cause i get to play the opponent's stuff and lots of devotion
The rest is removal