Prerequisites
- Glacial Chasm on the battlefield
- Exploration on the battlefield
- Conduit of Worlds on the battlefield
Steps
- Play Glacial Chasm either from your hand or from your graveyard
- When Glacial Chasm enters the battlefield, its second ability triggers, causing you to sacrifice another land you control
- Play any land from your graveyard
- At the beginning of your next upkeep, Glacial Chasm's cumulative upkeep ability triggers, allowing you to choose not to pay the cost and sacrifice it instead
- Repeat