the front side of Prototype Portal
the back of a classic MtG card
the front side of Clock of Omens
the back of a classic MtG card
the front side of Grinding Station
the back of a classic MtG card
the front side of Ancient Den
the back of a classic MtG card

Color Identity: W

Initial Card State

  1.  Ancient Den in exile (exiled by Prototype Portal).
  2.  All other permanents on the battlefield.

Steps

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

Results

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

Metadata

  1. In 51 decks according to EDHREC.
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