Feldon of the Third Path + Priest of Urabrask + Thornbite Staff + Phyrexian Altar
Feldon of the Third Path
Priest of Urabrask
Thornbite Staff
Phyrexian Altar
Requires
Feldon of the Third Path must be on the battlefield.
Priest of Urabrask must be in the graveyard.
Thornbite Staff must be on the battlefield.
Phyrexian Altar must be on the battlefield.
Thornbite Staff attached to Feldon.
Feldon does not have summoning sickness.
Mana needed: 
Steps
- Activate Feldon by paying and tapping it, creating a token copy of Priest of Urabrask that is an artifact in addition to its other types.
- When Priest of Urabrask enters the battlefield, it triggers, adding .
- Activate Phyrexian Altar by sacrificing Priest of Urabrask, adding one mana of any color.
- When Priest of Urabrask dies, Feldon triggers, untapping Feldon.
- Repeat.
Results
Infinite colored mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.
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High Market
8% of 108 decks
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7% of 108 decks
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6% of 108 decks
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Mana Artifacts
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78% of 107 decks
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50% of 8 decks
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45% of 94 decks
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44% of 108 decks
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41% of 102 decks
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38% of 8 decks
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Mana Vault
23% of 108 decks
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Mana Crypt
23% of 108 decks
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Fire Diamond
19% of 108 decks
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Lotus Petal
18% of 108 decks
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Liquimetal Torque
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Throne of Eldraine
16% of 50 decks
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Chrome Mox
16% of 108 decks
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Mox Diamond
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Thought Vessel
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Everflowing Chalice
9% of 108 decks
+5% synergy
Coldsteel Heart
7% of 108 decks
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Nyx Lotus
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Gauntlet of Power
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Caged Sun
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Mox Amber
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Thran Dynamo
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Commander's Sphere
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Lion's Eye Diamond
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+4% synergy
Grim Monolith
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Lands
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75% of 8 decks
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Battlefield Forge
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Blightstep Pathway
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Haunted Ridge
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Tainted Peak
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Dragonskull Summit
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Needleverge Pathway
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Sundown Pass
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Graven Cairns
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Smoldering Marsh
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Sunbaked Canyon
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Rugged Prairie
38% of 8 decks
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Clifftop Retreat
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Myriad Landscape
24% of 108 decks
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Gemstone Caverns
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Arid Mesa
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Bloodstained Mire
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Command Tower
12% of 108 decks
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Demolition Field
11% of 81 decks
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Scalding Tarn
10% of 108 decks
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Wooded Foothills
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Fabled Passage
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Cavern of Souls
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Prismatic Vista
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+0% synergy