Sacrifice All The Things

[Vileo]

Since you're going for a lot of sac effects, you should probably consider {It that Betrays}. Make your opponents sac things, and then you get them? Sounds like a good deal to me. Unfortunately, he's 12 mana, but you can cheat him out with reanimation.

Or sacrifice 6 creatures with {Ashnod's Altar}.

[MuggyWuggy]

 {Strands of Night}

[abstractApathist]

 {Sek'Kuar, Deathkeeper}: so much value with your commander.