Goblin Welder
Retreat to Coralhelm
Darksteel Citadel
Ancient Den

   Prerequisites

What do I need to start this combo?
Darksteel Citadel 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 Ancient Den and return Darksteel Citadel from your graveyard to the battlefield.
2
Darksteel Citadel enters the battlefield, triggering Retreat to Coralhelm, untapping Goblin Welder.
3
Activate Darksteel Citadel by tapping it, adding .
4
Activate Goblin Welder by tapping it, causing you to sacrifice Darksteel Citadel and return Ancient Den from your graveyard to the battlefield.
5
Ancient Den enters the battlefield, triggering Retreat to Coralhelm, untapping Goblin Welder.
6
Activate Ancient Den by tapping it, adding .
7
Repeat.

   Results

What do I get from this combo?
Infinite colorless mana
Infinite landfall triggers
Infinite white mana
Dr. Madison Li
0.0%inclusion3 decks7.30K decks
Ishai, Ojutai Dragonspeaker // Toggo, Goblin Weaponsmith
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Breya, Etherium Shaper
0.0%inclusion3 decks19K decks
Garth One-Eye
0.0%inclusion2 decks4.82K decks
Optimus Prime, Hero
0.0%inclusion1 decks4.18K decks
Bjorna, Nightfall Alchemist // Sophina, Spearsage Deserter
0.6%inclusion1 decks181 decks
High Synergy Cards
Vault of Whispers
100%inclusion5 decks5 decks
96%synergy
Great Furnace
100%inclusion13 decks13 decks
94%synergy
Seat of the Synod
92%inclusion12 decks13 decks
86%synergy
Jhoira, Weatherlight Captain
62%inclusion8 decks13 decks
56%synergy
Krark-Clan Ironworks
46%inclusion6 decks13 decks
45%synergy
Unwinding Clock
46%inclusion6 decks13 decks
44%synergy
Goblin Engineer
46%inclusion6 decks13 decks
43%synergy
Inventors' Fair
46%inclusion6 decks13 decks
42%synergy
Reckless Fireweaver
46%inclusion6 decks13 decks
42%synergy
Foundry Inspector
46%inclusion6 decks13 decks
42%synergy
Top Cards
Esper Sentinel
54%inclusion7 decks13 decks
35%synergy
Dispatch
46%inclusion6 decks13 decks
40%synergy
Wayfarer's Bauble
46%inclusion6 decks13 decks
39%synergy
Ichor Wellspring
38%inclusion5 decks13 decks
37%synergy
Emry, Lurker of the Loch
38%inclusion5 decks13 decks
34%synergy
Etherium Sculptor
38%inclusion5 decks13 decks
33%synergy
An Offer You Can't Refuse
38%inclusion5 decks13 decks
14%synergy
Ruin Ghost
31%inclusion4 decks13 decks
31%synergy
Master Transmuter
31%inclusion4 decks13 decks
29%synergy
Daretti, Scrap Savant
31%inclusion4 decks13 decks
29%synergy
Game Changers
Cyclonic Rift
31%inclusion4 decks13 decks
8%synergy
Mana Vault
23%inclusion3 decks13 decks
17%synergy
Enlightened Tutor
23%inclusion3 decks13 decks
8%synergy
Creatures
Teshar, Ancestor's Apostle
31%inclusion4 decks13 decks
29%synergy
Imperial Recruiter
31%inclusion4 decks13 decks
26%synergy
Enthusiastic Mechanaut
31%inclusion4 decks13 decks
26%synergy
Solemn Simulacrum
31%inclusion4 decks13 decks
18%synergy
Electrostatic Pummeler
23%inclusion3 decks13 decks
23%synergy
Trove Warden
23%inclusion3 decks13 decks
23%synergy
Scaretiller
23%inclusion3 decks13 decks
23%synergy
Quicksmith Genius
23%inclusion3 decks13 decks
23%synergy
Dreamscape Artist
23%inclusion3 decks13 decks
23%synergy
Walking Atlas
23%inclusion3 decks13 decks
23%synergy
Whirler Virtuoso
23%inclusion3 decks13 decks
22%synergy
Shimmer Dragon
23%inclusion3 decks13 decks
22%synergy
Wurmcoil Engine
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22%synergy
Myr Retriever
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21%synergy
Treasure Nabber
23%inclusion3 decks13 decks
21%synergy
Guide of Souls
23%inclusion3 decks13 decks
21%synergy
Urza, Lord High Artificer
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20%synergy
Thought Monitor
23%inclusion3 decks13 decks
19%synergy
Puresteel Paladin
23%inclusion3 decks13 decks
19%synergy
Instants
Mana Drain
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16%synergy
Swan Song
31%inclusion4 decks13 decks
13%synergy
Galvanic Discharge
23%inclusion3 decks13 decks
23%synergy
Path to Exile
23%inclusion3 decks13 decks
-24%synergy
Swords to Plowshares
23%inclusion3 decks13 decks
-38%synergy
Sorceries
Jolted Awake
23%inclusion3 decks13 decks
22%synergy
Nahiri's Lithoforming
23%inclusion3 decks13 decks
22%synergy
Fabricate
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18%synergy
Sevinne's Reclamation
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16%synergy
Utility Artifacts
Cloud Key
31%inclusion4 decks13 decks
29%synergy
Sculpting Steel
31%inclusion4 decks13 decks
29%synergy
Automated Assembly Line
23%inclusion3 decks13 decks
23%synergy
Aether Refinery
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22%synergy
Mycosynth Lattice
23%inclusion3 decks13 decks
22%synergy
Unstable Amulet
23%inclusion3 decks13 decks
22%synergy
Mishra's Bauble
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22%synergy
Shorikai, Genesis Engine
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21%synergy
Archaeomancer's Map
23%inclusion3 decks13 decks
20%synergy
Panharmonicon
23%inclusion3 decks13 decks
19%synergy
Sensei's Divining Top
23%inclusion3 decks13 decks
19%synergy
Enchantments
Storm the Vault
23%inclusion3 decks13 decks
21%synergy
Utility Lands
Treasure Vault
38%inclusion5 decks13 decks
36%synergy
Academy Ruins
38%inclusion5 decks13 decks
33%synergy
Reliquary Tower
38%inclusion5 decks13 decks
9%synergy
Fomori Vault
31%inclusion4 decks13 decks
30%synergy
Urza's Saga
31%inclusion4 decks13 decks
24%synergy
Mana Artifacts
Sol Ring
85%inclusion11 decks13 decks
1%synergy
Arcane Signet
69%inclusion9 decks13 decks
-3%synergy
Talisman of Creativity
38%inclusion5 decks13 decks
10%synergy
Mox Amber
31%inclusion4 decks13 decks
26%synergy
Commander's Sphere
31%inclusion4 decks13 decks
19%synergy
Mox Opal
23%inclusion3 decks13 decks
19%synergy
Chromatic Lantern
23%inclusion3 decks13 decks
14%synergy
Mind Stone
23%inclusion3 decks13 decks
8%synergy
Thought Vessel
23%inclusion3 decks13 decks
6%synergy
Boros Signet
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4%synergy
Fellwar Stone
23%inclusion3 decks13 decks
3%synergy
Azorius Signet
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1%synergy
Izzet Signet
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-1%synergy
Talisman of Conviction
23%inclusion3 decks13 decks
-1%synergy
Talisman of Progress
23%inclusion3 decks13 decks
-2%synergy
Lands
Command Tower
92%inclusion12 decks13 decks
18%synergy
Hallowed Fountain
77%inclusion10 decks13 decks
37%synergy
Steam Vents
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31%synergy
Luxury Suite
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36%synergy
Flooded Strand
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42%synergy
Sacred Foundry
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17%synergy
Spire of Industry
46%inclusion6 decks13 decks
43%synergy
Silverbluff Bridge
46%inclusion6 decks13 decks
40%synergy
Razortide Bridge
46%inclusion6 decks13 decks
39%synergy
Scalding Tarn
46%inclusion6 decks13 decks
35%synergy
Raugrin Triome
46%inclusion6 decks13 decks
22%synergy
Training Center
46%inclusion6 decks13 decks
21%synergy
Rustvale Bridge
38%inclusion5 decks13 decks
33%synergy
Arid Mesa
38%inclusion5 decks13 decks
28%synergy
Exotic Orchard
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2%synergy
Spectator Seating
31%inclusion4 decks13 decks
8%synergy
Sea of Clouds
31%inclusion4 decks13 decks
6%synergy
Aether Hub
23%inclusion3 decks13 decks
23%synergy
Power Depot
23%inclusion3 decks13 decks
22%synergy
Mana Confluence
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16%synergy
Riverglide Pathway
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16%synergy
Fabled Passage
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14%synergy
Bloodstained Mire
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12%synergy
Boros Garrison
23%inclusion3 decks13 decks
11%synergy
Azorius Chancery
23%inclusion3 decks13 decks
10%synergy