Crucible of Worlds + Ghirapur Orrery + Mystic Sanctuary + Walk the Aeons

Mana needed: {4}{U}{U} each turn

U identity

Commander legal

The 4 combo pieces

What must be in place

You control at least four Islands.

How to execute it

  1. Cast Walk the Aeons by paying {4}{U}{U}, sacrificing Mystic Sanctuary and two other Islands, causing you to take an extra turn after this one and returning Walk the Aeons to your hand.
  2. Play any Island except Mystic Sanctuary from your graveyard.
  3. Move to your next turn.
  4. Cast Walk the Aeons by paying {4}{U}{U}, causing you to take an extra turn after this one.
  5. Play any Island except Mystic Sanctuary from your graveyard, then play Mystic Sanctuary from your graveyard.
  6. When Mystic Sanctuary enters the battlefield, it triggers, putting Walk the Aeons on top of your library from your graveyard.
  7. Move to your next turn, drawing Walk the Aeons during your draw step.
  8. Repeat.

What the combo produces