Glacial Chasm + Ghirapur Orrery + Crucible of Worlds

Glacial Chasm

Ghirapur Orrery

Crucible of Worlds

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 relies on Glacial Chasm to completely shield you from all incoming damage, letting you effortlessly ignore your opponents' attacks at the cost of your own land base and cumulative upkeep life payments. By letting Glacial Chasm go to the graveyard during your upkeep instead of paying its escalating costs, you clear the way to immediately replay it using Crucible of Worlds. Meanwhile, Ghirapur Orrery ensures you keep a steady flow of extra land drops to fuel this loop without running out of resources, keeping your defenses permanently refreshed.