Colfenor, the Last Yew + Saffi Eriksdotter + Pitiless Plunderer + Ashnod's Altar

Colfenor, the Last Yew
Saffi Eriksdotter
Pitiless Plunderer
Ashnod's Altar

Requires
Colfenor, the Last Yew must be on the battlefield. Saffi Eriksdotter must be on the battlefield. Pitiless Plunderer must be on the battlefield. Ashnod's Altar must be on the battlefield.
Steps
  1. Activate Saffi Eriksdotter by sacrificing it targeting Colfenor.
  2. Colfenor and Pitiless Plunderer trigger.
  3. Let the Colfenor trigger resolve, declining to return anything.
  4. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
  5. Resolve the Saffi Eriksdotter ability, creating a delayed trigger that will return Colfenor to the battlefield when it dies.
  6. Activate Ashnod's Altar by sacrificing Colfenor, adding .
  7. Colfenor, Pitiless Plunderer, and Saffi Eriksdotter trigger.
  8. Resolve the Colfenor trigger, returning Saffi Eriksdotter to your hand.
  9. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
  10. Resolve the Saffi Eriksdotter trigger, returning Colfenor to the battlefield.
  11. Cast Saffi Eriksdotter by sacrificing the two Treasure tokens.
  12. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite storm count.

Colfenor, the Last Yew
3.15% of 1048 decks 33 decks
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46% of 35 decks +45% synergy
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43% of 35 decks +37% synergy
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40% of 35 decks +32% synergy
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37% of 35 decks +33% synergy
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34% of 35 decks +31% synergy
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34% of 35 decks +28% synergy
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34% of 35 decks +27% synergy
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34% of 35 decks +23% synergy
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31% of 35 decks +31% synergy
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31% of 29 decks +30% synergy
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29% of 35 decks +21% synergy
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29% of 35 decks +12% synergy
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29% of 35 decks +7% synergy
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26% of 35 decks +23% synergy
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26% of 35 decks +23% synergy
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26% of 35 decks +21% synergy
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26% of 35 decks +13% synergy
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24% of 34 decks +22% synergy
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23% of 35 decks +22% synergy
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23% of 35 decks +20% synergy
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23% of 35 decks +19% synergy
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23% of 35 decks +8% synergy
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21% of 33 decks +16% synergy
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21% of 19 decks +19% synergy
Cankerbloom
21% of 19 decks +7% synergy
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21% of 34 decks +5% synergy
Phyrexian Marauder
20% of 35 decks +20% synergy
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20% of 35 decks +20% synergy
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20% of 35 decks +20% synergy
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18% of 33 decks +17% synergy
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18% of 34 decks +17% synergy
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17% of 35 decks +15% synergy
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17% of 35 decks +11% synergy
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17% of 18 decks +6% synergy
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14% of 35 decks +13% synergy
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14% of 35 decks +13% synergy
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14% of 35 decks +12% synergy
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51% of 35 decks +22% synergy
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46% of 35 decks +2% synergy
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29% of 35 decks +23% synergy
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17% of 35 decks +8% synergy
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14% of 35 decks +10% synergy
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Heroic Intervention
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38% of 34 decks +22% synergy
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69% of 35 decks +3% synergy
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11% of 35 decks +4% synergy
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Godless Shrine
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31% of 35 decks +11% synergy
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Evolving Wilds
26% of 35 decks -2% synergy
Overgrown Farmland
24% of 33 decks +8% synergy
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20% of 30 decks +8% synergy
Temple of Silence
20% of 35 decks +3% synergy
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17% of 35 decks +5% synergy
Savannah
17% of 35 decks +4% synergy
Bayou
17% of 35 decks +4% synergy
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14% of 35 decks +8% synergy
Darkbore Pathway
14% of 35 decks +6% synergy
Fabled Passage
14% of 35 decks +1% synergy
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14% of 35 decks -3% synergy
Golgari Rot Farm
14% of 35 decks -5% synergy
Haunted Mire
12% of 26 decks +3% synergy
Brightclimb Pathway
11% of 35 decks +3% synergy
Mana Confluence
11% of 35 decks +3% synergy
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11% of 35 decks -4% synergy
Krosan Verge
11% of 35 decks -5% synergy
Terramorphic Expanse
11% of 35 decks -5% synergy
Brushland
11% of 35 decks -13% synergy
Woodland Chasm
9% of 35 decks +5% synergy
Wooded Bastion
9% of 35 decks +4% synergy
Fetid Heath
9% of 35 decks +3% synergy
Prismatic Vista
9% of 35 decks +3% synergy
Polluted Delta
9% of 35 decks +1% synergy
Bloodstained Mire
9% of 35 decks +0% synergy
Branchloft Pathway
9% of 35 decks -0% synergy
Wooded Foothills
9% of 35 decks -1% synergy
City of Brass
9% of 35 decks -1% synergy