Mortal dredge

I came up with this idea for a deck, which dredges yourself to death and then flashbacks dread return to bring back an eternal witness bringing back a mortal comabt. Tell me what you guys think!

(plain) Creatures

4 Avatar of woe
2 Death cultist
4 Eternal Witness
4 Golgari Grave-Troll
2 Grave-Shell Scarab
4 Shambling Shell
4 Stinkweed Imp

Spells

4 Darkblast
4 Dread return
2 Life from the Loam

Enchantment! (props to those who thought da:o)

2 Mortal Combat

Lands

2 Darkmor Salvage
4 Dryad Arbor (dont forget its also a creature for mortal combat and avatar of woe)
8 Forest
10 Swamp

Replace the Death Cultist with Fume Spitters as soon as Scars comes out. Life From the Loam is really heftily priced last time I checked it, and the Cephalid Illusionist/Shuko combo is easier than Dredge. Harmonize or Elvish Visionary might also be good for extra dredging power.