Glacial Chasm + Zuran Orb + Crucible of Worlds

Glacial Chasm
Zuran Orb
Crucible of Worlds

Requires
Glacial Chasm in hand or in your graveyard. All other permanents on the battlefield. You control at least one additional land. Your life total is at least three.
Steps
  1. Play Glacial Chasm either from your hand or from your graveyard
  2. When Glacial Chasm enters the battlefield, its second ability triggers, causing you to sacrifice another land you control
  3. Pass the turn
  4. At the beginning of your next upkeep, Glacial Chasm's cumulative upkeep ability triggers, causing you to put an age counter on it and lose 2 life
  5. Play any land from your graveyard
  6. Pass the turn
  7. At the beginning of your next upkeep, Glacial Chasm's cumulative upkeep ability triggers
  8. Holding priority, activate Zuran Orb by sacrificing Glacial Chasm, causing you to gain two life
  9. Resolve the Glacial Chasm trigger, doing nothing
  10. Repeat
Results
Prevent all damage that would be dealt to you.