World Shaper + Glacial Chasm + Mortuary Mire + Ashnod's Altar

Prerequisites

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Steps

1. 1While Glacial Chasm is on the battlefield, all damage that would be dealt to you is prevented.
2. 2At the beginning of your upkeep, Glacial Chasm triggers. Choose not to pay its cumulative upkeep cost and sacrifice it.
3. 3Activate Ashnod's Altar by sacrificing World Shaper.
4. 4When World Shaper dies, its second ability triggers, returning Glacial Chasm and Mortuary Mire from your graveyard to the battlefield tapped.
5. 5When Glacial Chasm and Mortuary Mire enter, they each trigger.
6. 6Resolve the Glacial Chasm trigger, sacrificing Mortuary Mire.
7. 7Resolve the Mortuary Mire trigger, putting World Shaper from your graveyard onto the top of your library.
8. 8Move to your next turn, drawing World Shaper during your draw step.
9. 9At the beginning of your upkeep, Glacial Chasm triggers. Choose not to pay its cumulative upkeep cost and sacrifice it.
10. 10Cast World Shaper by paying .
11. 11Repeat from step 3.

Effects

• Lock
• Prevent all damage that would be dealt to you