MTG Salvation

I'm looking for cards that have an effect or ability while they are in your graveyard. So far all I can think of is Geralf's Masterpiece, Stitchwing Skaab, and Despoiler of Souls. Is there anything else?

Deathmist Raptor
World Breaker
Kozilek's Return
Gryff's Boon
Erebos's Titan

• Akoum Firebird
  
• Relentless Dead

Here's a list which might help. I assume you're talking about Standard.

http://tinyurl.com/zouxosy

Actually, I've tested a deck with similar idea - t2 Heir of Falkenrath or Pale Rider of Trostad, discard Stitchwihg Skaab or Ghoulsteed, t3 activate zombie in graveyard discarding Prized Amalgam. Bam! It also had Asylum Visitor and other cheap madness spells.