Glacial Chasm + Perennial Behemoth + Dryad of the Ilysian Grove

Glacial Chasm

Perennial Behemoth

Dryad of the Ilysian Grove

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 elegant land-lock completely shields you from harm by weaponizing Glacial Chasm's self-sacrificing upkeep against itself. Thanks to Dryad of the Ilysian Grove granting you an extra land drop and Perennial Behemoth letting you play lands straight out of your graveyard, you can effortlessly replay the sacrificed land every single turn. Whenever the cumulative upkeep on Glacial Chasm grows too burdensome, you simply let it die to its own trigger and redeploy it immediately, completely bypassing its life-payment penalty while keeping its damage-prevention bubble permanently online.