Color Identity: B

Prerequisites

  1.  
    Vault of Whispers
    Vault of Whispers
    in exile (exiled by
    Prototype Portal
    Prototype Portal
    ).
  2.  All other permanents on the battlefield.

Steps

  1. Activate
    Prototype Portal
    Prototype Portal
    by paying ({0} magic symbol)   and tapping it, creating a token copy of
    Vault of Whispers
    Vault of Whispers
    .
  2. The
    Vault of Whispers
    Vault of Whispers
    token enters, triggering
    Grinding Station
    Grinding Station
    , untapping
    Grinding Station
    Grinding Station
    .
  3. Activate
    Clock of Omens
    Clock of Omens
    by tapping the
    Vault of Whispers
    Vault of Whispers
    token and
    Grinding Station
    Grinding Station
    , untapping
    Prototype Portal
    Prototype Portal
    .
  4. Repeat.

Results

  1. Infinite landfall triggers.
  2. Infinite tapped land tokens.

Metadata

  1. In 31 decks according to EDHREC.
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