Glacial Chasm, Aesi, Tyrant of Gyre Strait, and Perennial Behemoth

Prerequisites

• Glacial Chasm on the battlefield
• Aesi, Tyrant of Gyre Strait on the battlefield
• Perennial Behemoth on the battlefield

Steps

1. Play Glacial Chasm either from your hand or from your graveyard
2. When Glacial Chasm enters the battlefield, it triggers Aesi and its own second ability
3. Resolve Aesi's trigger, drawing a card if desired
4. Resolve Glacial Chasm's trigger, causing you to sacrifice another land you control
5. Play any land from your graveyard
6. When the land enters the battlefield, Aesi triggers, allowing you to draw a card if desired
7. 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
8. Repeat

Results

• Prevent all damage that would be dealt to you