Glacial Chasm + Conduit of Worlds + Exploration Broodship

Glacial Chasm

Conduit 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 crafty lock completely shields you from harm by weaponizing Glacial Chasm's self-sacrificing nature as a built-in reset button. Because Glacial Chasm makes you sacrifice a land when it enters and demands escalating life payments via cumulative upkeep, it would normally burn through your resources quickly; however, Exploration Broodship steps in by letting you play additional lands each turn and recast permanents from your graveyard by sacrificing a land. This creates a seamless loop where you simply replay the sacrificed Glacial Chasm from your graveyard over and over again, completely bypassing its upkeep costs while maintaining its passive damage immunity. Meanwhile, Conduit of Worlds provides a helpful backup way to replay your lands from the graveyard if you need extra redundancy to keep the Chasm flowing turn after turn.