Zask, Skittering Swarmlord + Glacial Chasm + Zuran Orb

Zask, Skittering Swarmlord

Glacial Chasm

Zuran Orb

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. Pass the turn.
4. At the beginning of your next upkeep, Glacial Chasm's cumulative upkeep ability triggers, causing you to put an age counter on it and lose 2 life.
5. Play any land from your graveyard.
6. Pass the turn.
7. At the beginning of your next upkeep, Glacial Chasm's cumulative upkeep ability triggers.
8. Holding priority, activate Zuran Orb by sacrificing Glacial Chasm, causing you to gain two life.
9. Resolve the Glacial Chasm trigger, doing nothing.
10. Repeat.