Mystic Sanctuary + Tatyova, Benthic Druid + Tidal Bore + Walking Atlas

GU identity

Commander legal

The 4 combo pieces

What must be in place

Walking Atlas does not have summoning sickness.
You control at least three other Islands.

How to execute it

  1. Cast Tidal Bore by returning Mystic Sanctuary from the battlefield to your hand, untapping Walking Atlas.
  2. Activate Walking Atlas by tapping it, putting Mystic Sanctuary from your hand onto the battlefield.
  3. Mystic Sanctuary enters the battlefield untapped, triggering itself and Tatyova.
  4. Resolve the Mystic Sanctuary trigger, returning Tidal Bore from your graveyard to the top of your library.
  5. Resolve the Tatyova trigger, causing you to gain 1 life and draw Tidal Bore from the top of your library.
  6. Activate Mystic Sanctuary by tapping it, adding {U}.
  7. Repeat.

What the combo produces