Glacial Chasm + Mina and Denn, Wildborn + Perennial Behemoth

Glacial Chasm

Mina and Denn, Wildborn

Perennial Behemoth

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 resilient defensive lock revolves around the complete safety net of Glacial Chasm, which prevents all damage dealt to you at the cost of your creatures being unable to attack and a cumulative upkeep. Mina and Denn, Wildborn neatly bypasses the drawback of having to sacrifice lands each time a new Glacial Chasm enters by granting you an extra land drop and a built-in way to bounce lands back to your hand. Meanwhile, Perennial Behemoth fuels the loop by letting you repeatedly play those sacrificed or bounced lands straight from your graveyard, ensuring you can cycle through your defenses indefinitely turn after turn.