Goblin Welder
Retreat to Coralhelm
Seat of the Synod
Darksteel Citadel

   Prerequisites

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

   Results

What do I get from this combo?
Infinite blue mana
Infinite colorless mana
Infinite landfall triggers
Jhoira, Ageless Innovator
1.0%inclusion25 decks2.45K decks
Saheeli, the Sun's Brilliance
0.8%inclusion15 decks1.93K decks
Glacian, Powerstone Engineer // Toggo, Goblin Weaponsmith
5.7%inclusion9 decks159 decks
Sakashima of a Thousand Faces // Toggo, Goblin Weaponsmith
3.1%inclusion6 decks195 decks
Iron Man, Titan of Innovation
0.1%inclusion5 decks8.04K decks
Dr. Madison Li
0.1%inclusion4 decks6.98K decks
Ishai, Ojutai Dragonspeaker // Toggo, Goblin Weaponsmith
10%inclusion4 decks41 decks
Silas Renn, Seeker Adept // Toggo, Goblin Weaponsmith
1.5%inclusion4 decks269 decks
Breya, Etherium Shaper
0.0%inclusion2 decks20.9K decks
Garth One-Eye
0.0%inclusion2 decks5.18K decks
Ian Malcolm, Chaotician
0.0%inclusion1 decks4.85K decks
Breeches, the Blastmaker
0.1%inclusion1 decks1.25K decks
Bjorna, Nightfall Alchemist // Sophina, Spearsage Deserter
0.5%inclusion1 decks189 decks
Thrasios, Triton Hero // Toggo, Goblin Weaponsmith
0.1%inclusion1 decks882 decks
Optimus Prime, Hero
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Brudiclad, Telchor Engineer
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Shao Jun
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Urtet, Remnant of Memnarch
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High Synergy Cards
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Buried Ruin
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Reckless Fireweaver
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Thirst for Knowledge
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32%inclusion28 decks87 decks
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Vandalblast
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Saheeli's Directive
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Windfall
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Utility Artifacts
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Cranial Ram
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Unwinding Clock
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Swiftfoot Boots
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Sting, the Glinting Dagger
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Clock of Omens
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Sculpting Steel
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Mystic Forge
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Idol of Oblivion
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Prototype Portal
22%inclusion19 decks87 decks
Spine of Ish Sah
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Illusionist's Bracers
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Automated Assembly Line
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Shorikai, Genesis Engine
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Archaeomancer's Map
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Staff of Domination
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Crucible of Worlds
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Worldwalker Helm
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Inspiring Statuary
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Chimil, the Inner Sun
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Expedition Map
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Liquimetal Coating
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Mirrorworks
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Darksteel Forge
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Magewright's Stone
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Sensei's Divining Top
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Mycosynth Lattice
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Lithoform Engine
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Simulacrum Synthesizer
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Prized Statue
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Cloud Key
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Brass's Tunnel-Grinder
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Sword of the Animist
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Insight Engine
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Grinding Station
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Mishra's Bauble
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Darksteel Monolith
8.0%inclusion7 decks87 decks
Panharmonicon
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The Endstone
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Enchantments
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26%inclusion23 decks87 decks
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20%inclusion17 decks87 decks
Trade Routes
16%inclusion14 decks87 decks
Freed from the Real
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Ghirapur Aether Grid
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Thopter Spy Network
15%inclusion13 decks87 decks
Excavation
13%inclusion11 decks87 decks
Weapons Manufacturing
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Retreat to Valakut
10%inclusion9 decks87 decks
Intruder Alarm
10%inclusion9 decks87 decks
Mirrodin Besieged
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Unstoppable Plan
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Determined Iteration
6.9%inclusion6 decks87 decks
Pemmin's Aura
6.9%inclusion6 decks87 decks
Mystic Remora
6.9%inclusion6 decks87 decks
Clan Crafter
5.7%inclusion5 decks87 decks
Artificer Class
5.7%inclusion5 decks87 decks
Planeswalkers
Daretti, Scrap Savant
37%inclusion32 decks87 decks
Tezzeret the Seeker
13%inclusion11 decks87 decks
Saheeli, the Gifted
8.0%inclusion7 decks87 decks
Tezzeret, Cruel Captain
7.0%inclusion3 decks43 decks
Saheeli Rai
5.7%inclusion5 decks87 decks
Utility Lands
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47%inclusion41 decks87 decks
Treasure Vault
40%inclusion35 decks87 decks
Reliquary Tower
32%inclusion28 decks87 decks
Urza's Saga
31%inclusion27 decks87 decks
Archway of Innovation
27%inclusion23 decks86 decks
Uthros, Titanic Godcore
24%inclusion10 decks42 decks
Fomori Vault
22%inclusion19 decks87 decks
Minamo, School at Water's Edge
22%inclusion19 decks87 decks
Oboro, Palace in the Clouds
16%inclusion14 decks87 decks
Terrain Generator
15%inclusion13 decks87 decks
Vesuva
13%inclusion11 decks87 decks
Otawara, Soaring City
13%inclusion11 decks87 decks
Guildless Commons
11%inclusion10 decks87 decks
Ghost Town
10%inclusion9 decks87 decks
Blinkmoth Nexus
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Mutavault
10%inclusion9 decks87 decks
Restless Spire
10%inclusion9 decks87 decks
Valakut, the Molten Pinnacle
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Thespian's Stage
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Mystic Sanctuary
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Rogue's Passage
6.9%inclusion6 decks87 decks
Tolaria West
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Arid Archway
5.7%inclusion5 decks87 decks
Temple of the False God
5.7%inclusion5 decks87 decks
Mana Artifacts
Sol Ring
80%inclusion70 decks87 decks
Arcane Signet
79%inclusion69 decks87 decks
Dimir Signet
44%inclusion4 decks9 decks
Rakdos Signet
44%inclusion4 decks9 decks
Izzet Signet
44%inclusion38 decks87 decks
Talisman of Creativity
41%inclusion36 decks87 decks
Liquimetal Torque
32%inclusion28 decks87 decks
Fellwar Stone
30%inclusion26 decks87 decks
Mind Stone
28%inclusion24 decks87 decks
Thought Vessel
25%inclusion22 decks87 decks
Thran Dynamo
24%inclusion21 decks87 decks
Cursed Mirror
24%inclusion21 decks87 decks
Patriar's Seal
23%inclusion20 decks87 decks
Boros Signet
20%inclusion3 decks15 decks
Azorius Signet
20%inclusion3 decks15 decks
Hedron Archive
20%inclusion17 decks87 decks
Machine God's Effigy
18%inclusion16 decks87 decks
Crystal Skull, Isu Spyglass
16%inclusion14 decks86 decks
Gilded Lotus
15%inclusion13 decks87 decks
The Mightstone and Weakstone
14%inclusion12 decks87 decks
Commander's Sphere
13%inclusion11 decks87 decks
Misleading Signpost
10%inclusion9 decks87 decks
Coveted Jewel
9.2%inclusion8 decks87 decks
Worn Powerstone
9.2%inclusion8 decks87 decks
Mox Opal
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Chromatic Lantern
9.2%inclusion8 decks87 decks
Mox Amber
8.0%inclusion7 decks87 decks
Dreamstone Hedron
6.9%inclusion6 decks87 decks
Basalt Monolith
6.9%inclusion6 decks87 decks
Midnight Clock
6.9%inclusion6 decks87 decks
Lotus Petal
6.9%inclusion6 decks87 decks
Blinkmoth Urn
5.7%inclusion5 decks87 decks
Chromatic Orrery
5.7%inclusion5 decks87 decks
Lands
Command Tower
79%inclusion69 decks87 decks
Silverbluff Bridge
77%inclusion67 decks87 decks
Slagwoods Bridge
75%inclusion3 decks4 decks
Tanglepool Bridge
75%inclusion3 decks4 decks
Steam Vents
67%inclusion58 decks87 decks
Hallowed Fountain
60%inclusion9 decks15 decks
Drossforge Bridge
56%inclusion5 decks9 decks
Mistvault Bridge
56%inclusion5 decks9 decks
Dimir Aqueduct
56%inclusion5 decks9 decks
Izzet Boilerworks
53%inclusion46 decks87 decks
Sulfur Falls
48%inclusion42 decks87 decks
Sacred Foundry
47%inclusion7 decks15 decks
Scalding Tarn
45%inclusion39 decks87 decks
Training Center
44%inclusion38 decks87 decks
Razortide Bridge
40%inclusion6 decks15 decks
Rustvale Bridge
33%inclusion5 decks15 decks
Rakdos Carnarium
33%inclusion3 decks9 decks
Xander's Lounge
33%inclusion3 decks9 decks
Luxury Suite
33%inclusion3 decks9 decks
Raugrin Triome
33%inclusion5 decks15 decks
Blood Crypt
33%inclusion3 decks9 decks
Watery Grave
33%inclusion3 decks9 decks
Cascade Bluffs
29%inclusion25 decks87 decks
Shivan Reef
29%inclusion25 decks87 decks
Power Depot
28%inclusion24 decks87 decks
Fabled Passage
28%inclusion24 decks87 decks
Azorius Chancery
27%inclusion4 decks15 decks
Spectator Seating
27%inclusion4 decks15 decks
Sea of Clouds
27%inclusion4 decks15 decks
Spire of Industry
25%inclusion22 decks87 decks
Evolving Wilds
25%inclusion22 decks87 decks
Scene of the Crime
24%inclusion21 decks87 decks
Stormcarved Coast
24%inclusion21 decks87 decks
Thundering Falls
22%inclusion19 decks87 decks
Terramorphic Expanse
22%inclusion19 decks87 decks
Temple of Epiphany
21%inclusion18 decks87 decks
Exotic Orchard
21%inclusion18 decks87 decks
Boros Garrison
20%inclusion3 decks15 decks
Myriad Landscape
18%inclusion16 decks87 decks
Ferrous Lake
17%inclusion15 decks87 decks
Prismatic Vista
15%inclusion13 decks87 decks
Riverglide Pathway
15%inclusion13 decks87 decks
Arid Mesa
15%inclusion13 decks87 decks
Flooded Strand
15%inclusion13 decks87 decks
Frostboil Snarl
15%inclusion13 decks87 decks
Maestros Theater
14%inclusion12 decks87 decks
The Mycosynth Gardens
14%inclusion12 decks87 decks
Urza's Cave
13%inclusion11 decks87 decks
Bloodstained Mire
13%inclusion11 decks87 decks
Fiery Islet
11%inclusion10 decks87 decks