Glacial Chasm + Aesi, Tyrant of Gyre Strait + Ramunap Excavator

Glacial Chasm

Aesi, Tyrant of Gyre Strait

Ramunap Excavator

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 harnesses the absolute safety net of Glacial Chasm, which completely blanks all damage dealt to you at the cost of your creatures' attacks and a mounting cumulative upkeep. To dodge that escalating life payment entirely, you simply let the Chasm sacrifice itself to its own upkeep trigger, knowing that Ramunap Excavator is waiting in the wings to let you immediately replay the land from your graveyard. Meanwhile, Aesi, Tyrant of Gyre Strait smoothly rewards this endless loop by turning every land drop into fresh card advantage, ensuring you never run out of resources while comfortably behind your impenetrable glacial wall.