Color Identity: U, B

Initial Card State

  1.  Mana Severance in hand.
  2.  All permanents on the battlefield.

Notable Prerequisites

  1. Deadeye Navigator is paired with Umbris.

Mana Needed

  1. ({1} magic symbol)  ({U} magic symbol)   plus an additional ({1} magic symbol)  ({U} magic symbol)   for each opponent you have available.

Steps

  1. Cast Mana Severance by paying ({1} magic symbol)  ({U} magic symbol)  .
  2. Hive Mind triggers, causing each opponent to copy Mana Severance.
  3. Resolve each opponent's Mana Severance, searching for and exiling all land cards from their libraries.
  4. Resolve your Mana Severance, choosing not to exile any land cards from your library.
  5. Activate Umbris by paying ({1} magic symbol)  ({U} magic symbol)  , blinking Umbris.
  6. Umbris triggers, revealing no lands from an opponent library, exiling their library.
  7. Repeat from step 5 for each opponent.

Results

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

Metadata

  1. In 8 decks according to EDHREC.
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