You control at least three additional permanents that enter the battlefield untapped and can collectively tap to produce at least ({2} magic symbol) ({G} magic symbol) .
Doppelgang by paying ({12} magic symbol) ({G} magic symbol) ({U} magic symbol) , creating four token copies of
Mystic Sanctuary and three other permanents that enter the battlefield untapped and can collectively tap to produce at least ({2} magic symbol) ({G} magic symbol) .
When the tokens enter the battlefield untapped, each
Mystic Sanctuary token triggers, and
Tatyova triggers for each land token that entered the battlefield.
Resolve all
Mystic Sanctuary triggers, putting
Doppelgang on top of your library from your graveyard.
Resolve all
Tatyova triggers, causing you to draw that many cards, including
Doppelgang with the first draw, and gain that much life.