UB Control

[SomeRandomDude]

// Deck file for Magic Workstation (http://www.magicworkstation.com)

// Lands
    4 [WWK] Creeping Tar Pit
    8 [ALA] Swamp (1)
    6 [ARE] Island (2003)
    2 [WWK] Bojuka Bog
    4 [ZEN] Jwar Isle Refuge

// Creatures
    1 [ZEN] Ob Nixilis, the Fallen

// Spells
    3 [M11] Jace Beleren
    3 [ALA] Agony Warp
    3 [M11] Liliana Vess
    4 [M10] Underworld Dreams
    2 [ROE] Consume the Meek
    4 [M11] Doom Blade
    4 [M11] Cancel
    4 [M11] Mana Leak
    4 [M11] Temple Bell
    4 [ZEN] Bloodchief Ascension

Testing this deck. The point is to win off of Underworld Dreams and Bloodchief Ascension.

[FM]

Well, from personal experience, I can tell you Underworld Dreams is cute, but it stops there. It's a #$&*@! to build around, and it never quite works out as you expect. Plus, you need M10 duals to consistently cast it on turn 3. Last, I like the little interaction about Jace and Liliana, but I'd go with New Jace. Jace, the Mind Sculptor, has the same interaction, and even better, provided you have fetchlands to flush away uneeded cards after you Brainstorm, and his bounce ability helps your cause further more than drawing them cards, since it accomplishes the same thing (upping their hand count by 1), without giving them card selection. You can also Fateseal to keep the game in check.

[SomeRandomDude]

The Jace and Underworld Dreams was the interaction, actually.

[FM]

Yes, though Liliana fits in nicely as well, since you tutor up a card and draw it.