Color Identity: U

Prerequisites

  1.  All permanents on the battlefield.
  2. Mechanized Production
    Mechanized Production     attached to
    Ugin's Nexus
    Ugin's Nexus    .

Steps

  1. At the beginning of your upkeep,
    Mechanized Production
    Mechanized Production     and
    Teferi's Realm
    Teferi's Realm     trigger.
  2. Resolve the
    Mechanized Production
    Mechanized Production     trigger, creating a token copy of
    Ugin's Nexus
    Ugin's Nexus    .
  3. Put the token copy of
    Ugin's Nexus
    Ugin's Nexus     into exile due to the legend rule, causing you to take an extra turn after this one.
  4. Resolve the
    Teferi's Realm
    Teferi's Realm     trigger, causing
    Ugin's Nexus
    Ugin's Nexus     and
    Mechanized Production
    Mechanized Production     to phase out.
  5. Move to your next turn.
  6. At the beginning of your untap step,
    Mechanized Production
    Mechanized Production     and
    Ugin's Nexus
    Ugin's Nexus     phase in.
  7. Repeat.

Results

  1. Infinite turns.

Metadata

  1. In 3 decks according to EDHREC.
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