Goblin Welder
Retreat to Coralhelm
Ancient Den
Great Furnace

   Prerequisites

What do I need to start this combo?
Ancient Den in your graveyard.
All other permanents on the battlefield.
Goblin Welder does not have summoning sickness.

   Steps

How does this combo work?
1
Activate Goblin Welder by tapping it, causing you to sacrifice Great Furnace and return Ancient Den from your graveyard to the battlefield.
2
Ancient Den enters the battlefield, triggering Retreat to Coralhelm, untapping Goblin Welder.
3
Activate Ancient Den by tapping it, adding .
4
Activate Goblin Welder by tapping it, causing you to sacrifice Ancient Den and return Great Furnace from your graveyard to the battlefield.
5
Great Furnace enters the battlefield, triggering Retreat to Coralhelm, untapping Goblin Welder.
6
Activate Great Furnace by tapping it, adding .
7
Repeat.

   Results

What do I get from this combo?
Infinite landfall triggers
Infinite red mana
Infinite white mana
Dr. Madison Li
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Breya, Etherium Shaper
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Kilo, Apogee Mind
0.0%inclusion2 decks13K decks
Garth One-Eye
0.0%inclusion2 decks4.89K decks
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Cayth, Famed Mechanist
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Top Cards
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Utility Artifacts
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15%synergy
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Sword of the Meek
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Ashnod's Altar
12%inclusion4 decks34 decks
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Dowsing Device
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8%synergy
Thornbite Staff
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8%synergy
Soul-Guide Lantern
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Amulet of Vigor
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Staff of Domination
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7%synergy
Thousand-Year Elixir
8.8%inclusion3 decks34 decks
7%synergy
Archaeomancer's Map
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5%synergy
Enchantments
Aether Revolt
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35%synergy
All Will Be One
24%inclusion8 decks34 decks
21%synergy
Mechanized Production
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17%synergy
Storm the Vault
15%inclusion5 decks34 decks
12%synergy
Unstoppable Plan
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10%synergy
Felidar Retreat
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6%synergy
Whirlwind of Thought
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3%synergy
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Bitter Reunion
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8%synergy
Land Tax
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Planeswalkers
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10%synergy
Utility Lands
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34%synergy
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8%synergy
Castle Vantress
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6%synergy
Otawara, Soaring City
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-7%synergy
Mana Artifacts
Sol Ring
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-1%synergy
Arcane Signet
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1%synergy
Talisman of Creativity
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19%synergy
Everflowing Chalice
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28%synergy
Mox Amber
32%inclusion11 decks34 decks
28%synergy
Mox Opal
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25%synergy
Talisman of Progress
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Paradise Mantle
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20%synergy
Lotus Petal
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14%synergy
Chromatic Lantern
21%inclusion7 decks34 decks
12%synergy
Solar Transformer
18%inclusion6 decks34 decks
17%synergy
Fellwar Stone
18%inclusion6 decks34 decks
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Aetheric Amplifier
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16%synergy
Machine God's Effigy
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14%synergy
Talisman of Conviction
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-10%synergy
Cursed Mirror
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Commander's Sphere
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0%synergy
Thought Vessel
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Conversion Apparatus
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9%synergy
Liquimetal Torque
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6%synergy
Mind Stone
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-6%synergy
Boros Signet
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-10%synergy
Azorius Signet
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-12%synergy
Izzet Signet
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-15%synergy
Lands
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20%synergy
Spire of Industry
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Steam Vents
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23%synergy
Hallowed Fountain
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22%synergy
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58%synergy
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58%synergy
Ketria Triome
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30%synergy
Sacred Foundry
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19%synergy
Training Center
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25%synergy
Glacial Fortress
47%inclusion16 decks34 decks
14%synergy
Sulfur Falls
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12%synergy
Luxury Suite
44%inclusion4 decks9 decks
21%synergy
Flooded Strand
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Raugrin Triome
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20%synergy
Clifftop Retreat
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30%synergy
Sea of Clouds
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17%synergy
Aether Hub
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38%synergy
Razortide Bridge
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32%synergy
Arid Mesa
38%inclusion13 decks34 decks
28%synergy
Exotic Orchard
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2%synergy
Silverbluff Bridge
35%inclusion12 decks34 decks
30%synergy
Drossforge Bridge
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30%synergy
Goldmire Bridge
33%inclusion3 decks9 decks
30%synergy
Mistvault Bridge
33%inclusion3 decks9 decks
29%synergy
Xander's Lounge
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10%synergy
Vault of Champions
33%inclusion3 decks9 decks
10%synergy
Raffine's Tower
33%inclusion3 decks9 decks
9%synergy
Morphic Pool
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9%synergy
Rustvale Bridge
32%inclusion11 decks34 decks
27%synergy
Cascade Bluffs
26%inclusion9 decks34 decks
12%synergy
Spectator Seating
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4%synergy
Fabled Passage
24%inclusion8 decks34 decks
14%synergy
Stormcarved Coast
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4%synergy
Battlefield Forge
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-5%synergy
Mana Confluence
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14%synergy
Riverglide Pathway
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Thundering Falls
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9%synergy
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1%synergy
Evolving Wilds
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-3%synergy
Adarkar Wastes
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The Mycosynth Gardens
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13%synergy
Reflecting Pool
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10%synergy
City of Brass
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7%synergy
Elegant Parlor
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7%synergy
Meticulous Archive
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6%synergy
Bloodstained Mire
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3%synergy
Mystic Monastery
15%inclusion5 decks34 decks
-14%synergy
Shivan Reef
15%inclusion5 decks34 decks
-15%synergy