Color Identity: g, u

Prerequisites

  1. All permanents on the battlefield
  2. Blossom Dryad
    Blossom Dryad     does not have summoning sickness
  3. ({1} magic symbol)   available

Steps

  1. Activate
    Thawing Glaciers
    Thawing Glaciers     by paying ({1} magic symbol)   and tapping it, searching your library for a basic land card and putting it onto the battlefield tapped
  2. The land enters the battlefield, triggering
    Retreat to Coralhelm
    Retreat to Coralhelm     and
    Nissa, Resurgent Animist
    Nissa
  3. Resolve the
    Nissa, Resurgent Animist
    Nissa     trigger, adding ({1} magic symbol)  
  4. Resolve the
    Retreat to Coralhelm
    Retreat to Coralhelm     trigger, untapping
    Blossom Dryad
    Blossom Dryad
  5. Activate
    Blossom Dryad
    Blossom Dryad     by tapping it, untapping
    Thawing Glaciers
    Thawing Glaciers
  6. Repeat

Results

  1. Near-infinite landfall triggers
  2. Put all basic lands from your library onto the battlefield
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