Glacial Chasm + Crucible of Worlds + Exploration Broodship

Glacial Chasm

Crucible of Worlds

Exploration Broodship

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 clever lock relies on continuously cycling **Glacial Chasm** in and out of play to completely blank all damage dealt to you while neatly bypassing its punishing cumulative upkeep. By leveraging **Crucible of Worlds** to replay lands straight from the graveyard, you always have a ready supply of sacrifices available when Exploration Broodship’s station ability is active and you choose to play a land from your graveyard to satisfy its additional cost. Whenever **Glacial Chasm** threatens to drain too much of your life total, you simply let it be sacrificed to its own upkeep or to the entry trigger of a fresh copy, allowing **Exploration Broodship** to smoothly orchestrate the loop and keep you entirely immune to harm turn after turn.