Color Identity: B, G, U

Prerequisites

  1.  
    Titans' Nest
    Titans' Nest
    on the battlefield.
  2.  
    Inverter of Truth
    Inverter of Truth
    and
    Thassa's Oracle
    Thassa's Oracle
    in hand.
  3. ({2} magic symbol)  ({U} magic symbol)  ({U} magic symbol)  ({B} magic symbol)  ({B} magic symbol)   (at most) available.

Steps

  1. Activate Titan's Nest by exiling a card from your graveyard, adding ({C} magic symbol)   that can only be spent to cast a colored spell that does not have ({X} magic symbol)   in its mana cost.
  2. Repeat step 1 until you have an empty library.
  3. Cast
    Inverter of Truth
    Inverter of Truth
    by paying ({2} magic symbol)  ({B} magic symbol)  ({B} magic symbol)  .
  4. When
    Inverter of Truth
    Inverter of Truth
    enters the battlefield, it triggers, exiling your library.
  5. Cast
    Thassa's Oracle
    Thassa's Oracle
    by paying ({U} magic symbol)  ({U} magic symbol)  .
  6. When
    Thassa's Oracle
    Thassa's Oracle
    enters the battlefield, it triggers, causing you to win the game.

Results

  1. Exile your library and graveyard.
  2. Win the game.

Metadata

  1. In 5 decks according to EDHREC.
footer