Color Identity: R, G, W

Prerequisites

  1.  
    Ertha Jo, Frontier Mentor
    Ertha Jo     and
    Seeker of Skybreak
    Seeker of Skybreak     on the battlefield.
  2. Seeker of Skybreak
    Seeker of Skybreak     does not have summoning sickness.

Steps

  1. Activate
    Seeker of Skybreak
    Seeker of Skybreak     by tapping it, targeting itself.
  2. Ertha Jo, Frontier Mentor
    Ertha Jo    's second ability triggers, copying
    Seeker of Skybreak
    Seeker of Skybreak    's ability, targeting any other creature.
  3. Resolve both
    Seeker of Skybreak
    Seeker of Skybreak     abilities, untapping it and the other targeted creature.
  4. Repeat.

Results

  1. Infinite mana creatures you control can produce.
  2. Infinite untap of creatures you control.
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