World Shaper, Glacial Chasm, Mortuary Mire, and Phantom Train

Prerequisites

• World Shaper on the battlefield
• Glacial Chasm on the battlefield
• Mortuary Mire in the graveyard
• Phantom Train on the battlefield
• each turn available

Steps

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

Results

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