Glacial Chasm + Oracle of Mul Daya + Walk-In Closet // Forgotten Cellar

Glacial Chasm

Oracle of Mul Daya

Walk-In Closet // Forgotten Cellar

How it works

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. Play any land from your graveyard.
4. 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.
5. Repeat.

This lock works by leveraging the combination of Walk-In Closet // Forgotten Cellar and Oracle of Mul Daya to constantly replay Glacial Chasm from your graveyard, resetting its life-draining cumulative upkeep before it becomes unmanageable. Because Oracle of Mul Daya lets you play additional lands and Walk-In Closet // Forgotten Cellar grants access to your graveyard, you can easily sacrifice Glacial Chasm to its own cumulative upkeep or use its entry trigger to feed the loop, all while sitting safely behind the total damage prevention it provides.