MTG Salvation

I'm brainstorming for cards for a zombie-sacrifice deck, and am looking for ideas. I'm running Lingering Souls and Gravecrawler, among other things.

I am looking for ideas for main and sideboard. Here are some of the cards I've thought of so far:

Benefit from many creatures:
Worship

Benefit from sacrificing creatures:

• Grave Pact
  
• Blood Artist
  
• Teysa, Orzhov Scion
  
• Kuon, Ogre Ascendant
  

Sacrifice Outlets

• Nantuko Husk - effective but boring
  
• Blasting Station
  
• Mind Slash - very amazing, probably not maindeckable
  
• Teysa, Orzhov Scion
  
• Jinxed Idol
  
• Mortapod
  

I'm combing decklists (including some legacy) for ideas. What am I missing?

Cartel Aristocrat is a nice sac outlet that doesn't look totally weak when things aren't going your way.

Tidehollow Sculler enables your Gravecrawlers and turns into Castigate with a sac outlet out.

Mortician Beetle seems good in a deck based around sacrifice.

Also Viscera Seer is a cheap sac outlet that lets you fix yours draws a bit. An interesting one would be Phyrexian Soulgorger.