Zask, Skittering Swarmlord
Azusa, Lost but Seeking
Glacial Chasm

   Prerequisites

What do I need to start this combo?
Glacial Chasm in hand or in your graveyard.
Zask and Azusa on the battlefield.
You control at least one additional land.

   Steps

How does this combo work?
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 sacrifice it.
5
Play a land except Glacial Chasm from your graveyard.
6
Repeat.

   Results

What do I get from this combo?
Prevent all damage that would be dealt to you
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