Ugh. Creature Feature help.

[Harlequin]

Shades would be pretty hot:

10 swamp
3  Cabal coffer
8  B. Fetch
4  dark ritual
2  Cabal ritual
3  Culling the Weak

4  Nantuko Shade [cc = 2]
2  Nakaya Shade [cc = 2]
4  Frozen Shade [cc = 3]
4  Dungeon Shade [cc = 3]
3  Hoar Shade [cc = 4]
3  Deepwood Legate [cc = 4 or free!]

4  Bad Moon
3  Pestilence
3  Grave Pact

The Pestilence + Gravepact combo should be rather insane for clearing your opponents board.  Esp when you have so much mana.  Also you can win out with pestilence if you are at more life than them.  Shades and pestilence are a good way to simply conver mana to damage.  Just review your Stack rules because you can do all sorts of insane plays by balanceing your creatures toughness and punishing the board with pestilance.  It just takes a few coffers.

[bleakill]

What about Viashinos and Confusion in the ranks ( {R} Enchantment, "Whenever an artifact, creature, or enchantment comes into play, its controller chooses target permanent another player controls that shares a type with it. Exchange control of those permanents.") ?

[Darkenslight]

Run B/W Advisors FTW!

You run silly little things like Teysa and Michiko, along with Vassal's Duty (!) to make your opponent sac things, and do shenanigans with your opponent's life total with Orzhova, Church of Deal or No Deal and Death of a Thousand Stings.  It would be funny to see Bureaucratic Beatdown, amongst other things.

[netherspirit]

Anyone ever tried Djinns? Could be quite fun