Color Identity: U, B

Prerequisites

  1.  
    Mana Severance
    Mana Severance     in hand.
  2.  All permanents on the battlefield.
  3. Your life total is greater than three times the number of opponents you have.
  4. You have at least a number of creature cards in your graveyard equal to the number of opponents you have.
  5. ({1} magic symbol)  ({U} magic symbol)   plus an additional ({B} magic symbol)  ({B} magic symbol)  ({B} magic symbol)   for each opponent you have available.

Steps

  1. Cast
    Mana Severance
    Mana Severance     by paying ({1} magic symbol)  ({U} magic symbol)  .
  2. Hive Mind
    Hive Mind     triggers, causing each opponent to copy
    Mana Severance
    Mana Severance    .
  3. Resolve each opponent's
    Mana Severance
    Mana Severance    , searching for and exiling all land cards from their libraries.
  4. Resolve your
    Mana Severance
    Mana Severance    , choosing not to exile any land cards from your library.
  5. Activate
    Chainer, Dementia Master
    Chainer     by paying ({B} magic symbol)  ({B} magic symbol)  ({B} magic symbol)   and three life, returning a creature card from your graveyard to the battlefield as a black Nightmare in addition to its other creature types.
  6. That creature enters the battlefield, triggering
    Umbris, Fear Manifest
    Umbris    .
  7. Resolve the
    Umbris, Fear Manifest
    Umbris     trigger, revealing no lands from an opponent library, exiling their library.
  8. Repeat from step 5 for each opponent.

Results

  1. Exile each opponent's library.
  2. Near-infinitely large
    Umbris, Fear Manifest
    Umbris    .

Metadata

  1. In 4 decks according to EDHREC.
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