I like it! I have a mono black deck all foiled out built around sacrifice.

You could add in a Sword of Light and Shadow (Protect your Returners from eating a Path to Exile

I find 1x Grave Pact to be the right number. U could add in some... Geth's Verdict Tribute to Hunger or Killing Wave

I assume this is budget but Liliana of the Veil would do this deck wonders.

I think I would SB the Dross Harvester in favor of MB Phyrexian Arena ...another alternative could be 2x Vampire Nighthawk. They can gain u quite a bit of life if left unchecked.

the whole reason for me making the post and forgot to mention it haha. Mortician Beetle

What's working wonders for my undying sacrifice deck is Blasting Station. I haven't play tested it but it looks like a great deck!

Hey there! I loved this deck.

One question: if you would splash in a bit of red, what could you possibly take out, and why / why not.

I was thinking of cards like Mark of Mutiny, Sarkhan the Mad, Terminate and possibly some direct damage with Lightning Bolt.

Also, what about Jinxed Idol?

Hey! Im currently working on a sac deck and your deck really helped me a lot! Maybe i can help too: i think Shriekmaw would fit here (at least in the sideboard). A 2 mana removel +sac for Grave Pact