Sheoldred

Click here for visual deck (with images)
 
Turn lands into swamps (for Sheoldred land walk)
Other swampwalkers
Milling effects (mostly for myself)
This is a "Lend Out" deck. I never play these decks myself; they are for lending out to others who don't have decks, or only 1-2 decks that they're bored of. Lend Out decks don't run very many tutors, as I've found that handing someone a deck then having them tutor takes a long time to do (because they have to read a bunch of cards).
 
Mana Acceleration (10): General (1): Spells (26): Sideboard (Omitted/Cut card ideas):
1 Caged Sun 1 Sheoldred, Whispering One 1 Argentum Armor 1 Damnation
1 Dreamstone Hedron   1 Cyclopean Tomb 1 Mutilate
1 Everflowing Chalice Creatures (27): 1 Elbrus, the Binding Blade 1 Mind Sludge
1 Extraplanar Lens 1 Steel Hellkite 1 Explorer's Scope 1 Tendrils of Corruption
1 Gauntlet of Power 1 Avatar of Woe 1 Karn Liberated 1 Corrupt
1 Thran Dynamo 1 Bloodgift Demon 1 Lashwrithe 1 Diviner's Wand
1 Worn Powerstone 1 Cyclopean Giant 1 Memory Jar 1 Hecatomb
1 Bubbling Muck 1 Dakmor Sorceress 1 Mesmeric Orb  
1 Magus of the Coffers 1 Dark Impostor 1 Mind's Eye  
1 Nirkana Revenant 1 Dirtwater Wraith 1 Mystic Compass  
  1 Dread Cacodemon 1 Nightmare Lash  
Lands (36): 1 Extractor Demon 1 Temporal Aperture  
1 Cabal Coffers 1 Fendeep Summoner 1 Beacon of Unrest  
1 Crypt of Agadeem 1 Filth 1 Blanket of Night  
1 Terrain Generator 1 Geth, Lord of the Vault 1 Contaminated Ground  
1 Thawing Glaciers 1 Harvester of Souls 1 Dregs of Sorrow  
1 Urborg, Tomb of Yawgmoth 1 Kalitas, Bloodchief of Ghet 1 Evil Presence  
1 Vesuva 1 Kokusho, the Evening Star 1 Grave Betrayal  
28 Swamp 1 Korlash, Heir to Blackblade 1 Horror of Horrors  
1 Mana Crypt 1 Liliana's Shade 1 Liliana of the Dark Realms  
1 Sol Ring 1 Necropolis Regent 1 Nightcreep  
  1 Nightmare 1 Nightmare Incursion  
  1 Pestilence Demon 1 Phyrexian Arena  
  1 Reaper from the Abyss 1 Plague Wind  
  1 Sewer Nemesis 1 Tainted Well  
  1 Sima Yi, Wei Field Marshal 1 Underworld Connections  
  1 Umbra Stalker    
  1 Whispering Shade    
  1 Zombie Trailblazer    
  1 Visara the Dreadful