Nim Deathmantle + Altar of Dementia + Great Whale

Nim Deathmantle
Altar of Dementia
Great Whale

Requires
Nim Deathmantle must be on the battlefield. Altar of Dementia must be on the battlefield. Great Whale must be on the battlefield. You control up to seven lands that can tap to produce at least 4.
Steps
  1. Activate up to seven lands by tapping them, adding at least 4.
  2. Activate Altar of Dementia by sacrificing Great Whale.
  3. When Great Whale dies, Nim Deathmantle triggers, returning Great Whale from your graveyard to the battlefield, and attaching Nim Deathmantle to it.
  4. When Great Whale enters the battlefield, it triggers, untapping up to seven lands.
  5. Resolve the Altar of Dementia ability from step 2, causing target player to mill cards equal to Great Whale's power.
  6. Repeat.
  7. If the lands can tap to produce at least 5, this combo nets infinite mana.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite mana lands you control can produce. Infinite mill. Infinite sacrifice triggers. Infinite self-mill. Infinite untap of lands you control.

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0.18% of 542 decks 1 decks
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Dimir Aqueduct
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Glacial Fortress
50% of 2 decks +25% synergy
Hallowed Fountain
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Demolition Field
25% of 4 decks +22% synergy
Prismatic Vista
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Cavern of Souls
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Mana Confluence
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Windswept Heath
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Flooded Strand
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Arid Mesa
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Scalding Tarn
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Polluted Delta
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Marsh Flats
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Misty Rainforest
25% of 4 decks +13% synergy
Exotic Orchard
25% of 4 decks -11% synergy
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25% of 4 decks +22% synergy
Prismatic Vista
25% of 4 decks +19% synergy
Cavern of Souls
25% of 4 decks +18% synergy
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25% of 4 decks +18% synergy
Windswept Heath
25% of 4 decks +15% synergy
Flooded Strand
25% of 4 decks +14% synergy
Arid Mesa
25% of 4 decks +14% synergy
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25% of 4 decks +14% synergy
Polluted Delta
25% of 4 decks +14% synergy
Marsh Flats
25% of 4 decks +14% synergy
Misty Rainforest
25% of 4 decks +13% synergy
Exotic Orchard
25% of 4 decks -11% synergy