Color Identity: R, W, B

Initial Card State

  1.  All permanents on the battlefield.

Mana Needed

  1. ({1} magic symbol)   each turn available.

Steps

  1. Activate Karn by paying ({1} magic symbol)  , causing Ugin's Nexus to become an artifact creature until end of turn.
  2. At the beginning of your end step, Athreos' second ability and Nahiri's Resolve trigger.
  3. Resolve the Athreos trigger, putting a coin counter on Ugin's Nexus.
  4. Holding priority, activate Phyrexian Altar by sacrificing Ugin's Nexus, adding one mana of any color.
  5. Ugin's Nexus is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
  6. Athreos' third ability triggers, causing you to return Ugin's Nexus from exile to the battlefield.
  7. Resolve the Nahiri's Resolve trigger from step 2, exiling Ugin's Nexus until your next upkeep.
  8. Move to your extra turn.
  9. At the beginning of your upkeep, Nahiri's Resolve triggers, returning Ugin's Nexus from exile to the battlefield.
  10. Repeat.

Results

  1. Infinite turns.

Metadata

  1. In 0 decks according to EDHREC.
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