Ashnod's Altar + Sorcerer's Broom + Carnival of Souls + Zulaport Cutthroat
Ashnod's Altar
Sorcerer's Broom
Carnival of Souls
Zulaport Cutthroat
Requires
Ashnod's Altar must be on the battlefield.
Sorcerer's Broom must be on the battlefield.
Carnival of Souls must be on the battlefield.
Zulaport Cutthroat must be on the battlefield.
You control an additional token copy of Sorcerer's Broom.
Mana needed: 
Steps
- Activate Ashnod's Altar by sacrificing one of your Sorcerer's Broom creatures, adding .
- The surviving Sorcerer's Broom and Zulaport Cutthroat each trigger.
- Resolve Zulaport Cutthroat's trigger, gaining 1 life and causing each opponent to lose 1 life.
- Resolve Sorcerer's Broom's trigger, paying
to create a token copy of Sorcerer's Broom. - Carnival of Souls triggers, causing you to lose 1 life and add .
- Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite lifegain triggers. Infinite lifeloss. Infinite LTB. Infinite sacrifice triggers.
Alesha, Who Smiles at Death
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Wilhelt, the Rotcleaver
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Kazarov, Sengir Pureblood
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Yawgmoth, Thran Physician
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100% of 5 decks
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Lands
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100% of 1 decks
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100% of 2 decks
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100% of 1 decks
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100% of 1 decks
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100% of 1 decks
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100% of 1 decks
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100% of 1 decks
+74% synergy
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100% of 1 decks
+72% synergy
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100% of 1 decks
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100% of 1 decks
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Clifftop Retreat
100% of 1 decks
+71% synergy
Sunken Hollow
100% of 1 decks
+65% synergy
Bloodfell Caves
50% of 2 decks
+43% synergy
Temple of Malice
50% of 2 decks
+36% synergy
Rakdos Carnarium
50% of 2 decks
+35% synergy
Dragonskull Summit
50% of 2 decks
+19% synergy
Exotic Orchard
40% of 5 decks
+4% synergy
Command Tower
40% of 5 decks
-34% synergy
Grand Coliseum
20% of 5 decks
+20% synergy
Warped Landscape
20% of 5 decks
+20% synergy
Grixis Panorama
20% of 5 decks
+20% synergy
Unclaimed Territory
20% of 5 decks
+15% synergy
Myriad Landscape
20% of 5 decks
+0% synergy
Evolving Wilds
20% of 5 decks
-1% synergy
Path of Ancestry
20% of 5 decks
-1% synergy