Goblin Welder
Retreat to Coralhelm
Seat of the Synod
Ancient Den

   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 Ancient Den 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 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 blue mana
Infinite landfall triggers
Infinite white mana
Dr. Madison Li
0.2%inclusion13 decks7.18K decks
Breya, Etherium Shaper
0.0%inclusion5 decks19.8K decks
Ishai, Ojutai Dragonspeaker // Toggo, Goblin Weaponsmith
11%inclusion4 decks36 decks
Kilo, Apogee Mind
0.0%inclusion2 decks13.2K decks
Garth One-Eye
0.0%inclusion2 decks4.91K decks
Akiri, Line-Slinger // Thrasios, Triton Hero
0.1%inclusion1 decks884 decks
Optimus Prime, Hero
0.0%inclusion1 decks4.34K decks
Elsha of the Infinite
0.0%inclusion1 decks4.80K decks
Bjorna, Nightfall Alchemist // Sophina, Spearsage Deserter
0.5%inclusion1 decks184 decks
Elmar, Ulvenwald Informant // Hargilde, Kindly Runechanter
0.1%inclusion1 decks932 decks
Urtet, Remnant of Memnarch
0.0%inclusion1 decks16K decks
Cayth, Famed Mechanist
0.0%inclusion1 decks4.45K decks
High Synergy Cards
Tree of Tales
100%inclusion5 decks5 decks
98%synergy
Great Furnace
100%inclusion33 decks33 decks
94%synergy
Vault of Whispers
88%inclusion7 decks8 decks
83%synergy
Dispatch
73%inclusion24 decks33 decks
67%synergy
Etherium Sculptor
70%inclusion23 decks33 decks
64%synergy
Inventors' Fair
64%inclusion21 decks33 decks
60%synergy
Goblin Engineer
61%inclusion20 decks33 decks
58%synergy
Jhoira, Weatherlight Captain
55%inclusion18 decks33 decks
49%synergy
Automated Assembly Line
42%inclusion14 decks33 decks
42%synergy
Foundry Inspector
45%inclusion15 decks33 decks
41%synergy
Top Cards
Baleful Strix
50%inclusion4 decks8 decks
37%synergy
Sensei's Divining Top
45%inclusion15 decks33 decks
41%synergy
Esper Sentinel
45%inclusion15 decks33 decks
27%synergy
Whirler Virtuoso
42%inclusion14 decks33 decks
41%synergy
Guide of Souls
42%inclusion14 decks33 decks
40%synergy
Reckless Fireweaver
42%inclusion14 decks33 decks
38%synergy
Path to Exile
42%inclusion14 decks33 decks
-5%synergy
Depthshaker Titan
40%inclusion4 decks10 decks
39%synergy
Electrostatic Pummeler
39%inclusion13 decks33 decks
39%synergy
Roil Cartographer
39%inclusion13 decks33 decks
39%synergy
Game Changers
Enlightened Tutor
24%inclusion8 decks33 decks
9%synergy
Cyclonic Rift
24%inclusion8 decks33 decks
2%synergy
Mana Vault
21%inclusion7 decks33 decks
15%synergy
Chrome Mox
21%inclusion7 decks33 decks
15%synergy
Rhystic Study
21%inclusion7 decks33 decks
-2%synergy
Farewell
12%inclusion4 decks33 decks
0%synergy
Teferi's Protection
12%inclusion4 decks33 decks
-4%synergy
Creatures
Ruin Ghost
36%inclusion12 decks33 decks
36%synergy
Kappa Cannoneer
36%inclusion12 decks33 decks
33%synergy
Phyrexian Metamorph
36%inclusion12 decks33 decks
29%synergy
Vedalken Archmage
33%inclusion11 decks33 decks
32%synergy
The Reality Chip
33%inclusion11 decks33 decks
30%synergy
Emry, Lurker of the Loch
33%inclusion11 decks33 decks
29%synergy
Enthusiastic Mechanaut
33%inclusion11 decks33 decks
29%synergy
Solemn Simulacrum
33%inclusion11 decks33 decks
21%synergy
Riptide Gearhulk
30%inclusion7 decks23 decks
28%synergy
Master Transmuter
30%inclusion10 decks33 decks
29%synergy
Thought Monitor
30%inclusion10 decks33 decks
27%synergy
Blaster Hulk
27%inclusion9 decks33 decks
27%synergy
Urza, Lord High Artificer
27%inclusion9 decks33 decks
24%synergy
Imperial Recruiter
27%inclusion9 decks33 decks
23%synergy
PuPu UFO
25%inclusion3 decks12 decks
24%synergy
Assaultron Dominator
24%inclusion8 decks33 decks
24%synergy
Myr Retriever
21%inclusion7 decks33 decks
20%synergy
Teshar, Ancestor's Apostle
21%inclusion7 decks33 decks
19%synergy
Spellskite
21%inclusion7 decks33 decks
18%synergy
Aurora Shifter
18%inclusion6 decks33 decks
18%synergy
Brotherhood Scribe
18%inclusion6 decks33 decks
18%synergy
Hullbreaker Horror
18%inclusion6 decks33 decks
10%synergy
Walking Atlas
15%inclusion5 decks33 decks
15%synergy
Lightning Runner
15%inclusion5 decks33 decks
14%synergy
Urza, Lord Protector
15%inclusion5 decks33 decks
14%synergy
Liberty Prime, Recharged
15%inclusion5 decks33 decks
14%synergy
Lion Sash
15%inclusion5 decks33 decks
13%synergy
Burnished Hart
15%inclusion5 decks33 decks
12%synergy
Brudiclad, Telchor Engineer
15%inclusion5 decks33 decks
12%synergy
Sai, Master Thopterist
15%inclusion5 decks33 decks
12%synergy
Ornithopter of Paradise
15%inclusion5 decks33 decks
11%synergy
Mendicant Core, Guidelight
13%inclusion3 decks23 decks
11%synergy
Marvin, Murderous Mimic
13%inclusion4 decks31 decks
11%synergy
Salvager of Ruin
12%inclusion4 decks33 decks
12%synergy
Sage of Lat-Nam
12%inclusion4 decks33 decks
12%synergy
Aethergeode Miner
12%inclusion4 decks33 decks
12%synergy
Scaretiller
12%inclusion4 decks33 decks
12%synergy
Dreamscape Artist
12%inclusion4 decks33 decks
12%synergy
Glaring Fleshraker
12%inclusion4 decks33 decks
11%synergy
Ethersworn Canonist
12%inclusion4 decks33 decks
11%synergy
Sphinx of the Revelation
12%inclusion4 decks33 decks
11%synergy
Shimmer Dragon
12%inclusion4 decks33 decks
11%synergy
Myr Battlesphere
12%inclusion4 decks33 decks
10%synergy
Volatile Stormdrake
12%inclusion4 decks33 decks
10%synergy
Palladium Myr
12%inclusion4 decks33 decks
10%synergy
Puresteel Paladin
12%inclusion4 decks33 decks
8%synergy
Sun Titan
12%inclusion4 decks33 decks
4%synergy
Trove Warden
9.1%inclusion3 decks33 decks
9%synergy
Thopter Assembly
9.1%inclusion3 decks33 decks
9%synergy
Quicksmith Genius
9.1%inclusion3 decks33 decks
9%synergy
Instants
An Offer You Can't Refuse
39%inclusion13 decks33 decks
15%synergy
Swords to Plowshares
36%inclusion12 decks33 decks
-25%synergy
Tune the Narrative
33%inclusion11 decks33 decks
33%synergy
Swan Song
33%inclusion11 decks33 decks
16%synergy
Galvanic Discharge
30%inclusion10 decks33 decks
30%synergy
Electrosiphon
24%inclusion8 decks33 decks
23%synergy
Whir of Invention
24%inclusion8 decks33 decks
22%synergy
Sejiri Shelter
21%inclusion7 decks33 decks
18%synergy
Silence
21%inclusion7 decks33 decks
15%synergy
Glimmer of Genius
18%inclusion6 decks33 decks
18%synergy
Rush of Inspiration
18%inclusion6 decks33 decks
17%synergy
Thirst for Knowledge
18%inclusion6 decks33 decks
17%synergy
Dramatic Reversal
18%inclusion6 decks33 decks
14%synergy
Counterspell
18%inclusion6 decks33 decks
-24%synergy
Harnessed Lightning
15%inclusion5 decks33 decks
15%synergy
Mana Drain
12%inclusion4 decks33 decks
-2%synergy
Dovin's Veto
12%inclusion4 decks33 decks
-6%synergy
Arcane Denial
12%inclusion4 decks33 decks
-8%synergy
Aether Spike
9.1%inclusion3 decks33 decks
9%synergy
Radstorm
9.1%inclusion3 decks33 decks
8%synergy
Kabira Takedown
9.1%inclusion3 decks33 decks
8%synergy
Razorgrass Ambush
9.1%inclusion3 decks33 decks
7%synergy
Aetherize
9.1%inclusion3 decks33 decks
2%synergy
Chaos Warp
9.1%inclusion3 decks33 decks
-20%synergy
Sorceries
Fabricate
36%inclusion12 decks33 decks
31%synergy
Jolted Awake
30%inclusion10 decks33 decks
30%synergy
Wrath of the Skies
27%inclusion9 decks33 decks
27%synergy
Thoughtcast
24%inclusion8 decks33 decks
21%synergy
Wake the Past
18%inclusion6 decks33 decks
15%synergy
Organic Extinction
15%inclusion5 decks33 decks
13%synergy
Sea Gate Restoration
15%inclusion5 decks33 decks
11%synergy
Sevinne's Reclamation
15%inclusion5 decks33 decks
8%synergy
Localized Destruction
12%inclusion4 decks33 decks
12%synergy
Nahiri's Lithoforming
12%inclusion4 decks33 decks
11%synergy
Cleansing Wildfire
9.1%inclusion3 decks33 decks
9%synergy
Universal Surveillance
9.1%inclusion3 decks33 decks
9%synergy
Tezzeret's Gambit
9.1%inclusion3 decks33 decks
6%synergy
Ponder
9.1%inclusion3 decks33 decks
-3%synergy
Faithless Looting
9.1%inclusion3 decks33 decks
-7%synergy
Utility Artifacts
Decoction Module
36%inclusion12 decks33 decks
36%synergy
Gonti's Aether Heart
36%inclusion12 decks33 decks
36%synergy
Unstable Amulet
36%inclusion12 decks33 decks
36%synergy
Izzet Generatorium
36%inclusion12 decks33 decks
35%synergy
Cloud Key
36%inclusion12 decks33 decks
34%synergy
Aether Refinery
33%inclusion11 decks33 decks
33%synergy
Mishra's Bauble
33%inclusion11 decks33 decks
32%synergy
Shorikai, Genesis Engine
33%inclusion11 decks33 decks
31%synergy
Panharmonicon
33%inclusion11 decks33 decks
29%synergy
Wayfarer's Bauble
30%inclusion10 decks33 decks
23%synergy
Skullclamp
30%inclusion10 decks33 decks
19%synergy
Krark-Clan Ironworks
27%inclusion9 decks33 decks
26%synergy
Portal to Phyrexia
27%inclusion9 decks33 decks
26%synergy
Unwinding Clock
27%inclusion9 decks33 decks
25%synergy
Aetherflux Conduit
26%inclusion6 decks23 decks
26%synergy
Sculpting Steel
24%inclusion8 decks33 decks
22%synergy
Ichor Wellspring
21%inclusion7 decks33 decks
20%synergy
Dynavolt Tower
18%inclusion6 decks33 decks
18%synergy
Aetherworks Marvel
18%inclusion6 decks33 decks
18%synergy
Isochron Scepter
18%inclusion6 decks33 decks
16%synergy
Glass Casket
15%inclusion5 decks33 decks
15%synergy
Mystic Forge
15%inclusion5 decks33 decks
12%synergy
Lightning Greaves
15%inclusion5 decks33 decks
-10%synergy
Portable Hole
12%inclusion4 decks33 decks
12%synergy
Mirrorworks
12%inclusion4 decks33 decks
12%synergy
Encroaching Mycosynth
12%inclusion4 decks33 decks
11%synergy
Clock of Omens
12%inclusion4 decks33 decks
11%synergy
Crucible of Worlds
12%inclusion4 decks33 decks
10%synergy
Sword of the Animist
12%inclusion4 decks33 decks
8%synergy
Ashnod's Altar
12%inclusion4 decks33 decks
6%synergy
Swiftfoot Boots
12%inclusion4 decks33 decks
-15%synergy
Sword of the Meek
9.1%inclusion3 decks33 decks
9%synergy
Dowsing Device
9.1%inclusion3 decks33 decks
9%synergy
Thornbite Staff
9.1%inclusion3 decks33 decks
8%synergy
Mycosynth Lattice
9.1%inclusion3 decks33 decks
8%synergy
Soul-Guide Lantern
9.1%inclusion3 decks33 decks
8%synergy
Amulet of Vigor
9.1%inclusion3 decks33 decks
8%synergy
Staff of Domination
9.1%inclusion3 decks33 decks
8%synergy
Thousand-Year Elixir
9.1%inclusion3 decks33 decks
7%synergy
Archaeomancer's Map
9.1%inclusion3 decks33 decks
5%synergy
Enchantments
Aether Revolt
36%inclusion12 decks33 decks
36%synergy
All Will Be One
24%inclusion8 decks33 decks
22%synergy
Mechanized Production
21%inclusion7 decks33 decks
18%synergy
Storm the Vault
15%inclusion5 decks33 decks
13%synergy
Unstoppable Plan
13%inclusion3 decks23 decks
11%synergy
Felidar Retreat
12%inclusion4 decks33 decks
6%synergy
Whirlwind of Thought
12%inclusion4 decks33 decks
3%synergy
Era of Innovation
9.1%inclusion3 decks33 decks
9%synergy
Ghirapur Aether Grid
9.1%inclusion3 decks33 decks
9%synergy
Bitter Reunion
9.1%inclusion3 decks33 decks
8%synergy
Land Tax
9.1%inclusion3 decks33 decks
3%synergy
Mystic Remora
9.1%inclusion3 decks33 decks
-7%synergy
Planeswalkers
Daretti, Scrap Savant
12%inclusion4 decks33 decks
10%synergy
Utility Lands
Darksteel Citadel
42%inclusion14 decks33 decks
39%synergy
Fomori Vault
33%inclusion11 decks33 decks
32%synergy
Urza's Saga
30%inclusion10 decks33 decks
23%synergy
Treasure Vault
24%inclusion8 decks33 decks
22%synergy
Reliquary Tower
24%inclusion8 decks33 decks
-6%synergy
HELIOS One
15%inclusion5 decks33 decks
15%synergy
Archway of Innovation
15%inclusion5 decks33 decks
12%synergy
Academy Ruins
15%inclusion5 decks33 decks
10%synergy
Amonkhet Raceway
13%inclusion3 decks23 decks
12%synergy
Muraganda Raceway
13%inclusion3 decks23 decks
12%synergy
Oboro, Palace in the Clouds
9.1%inclusion3 decks33 decks
8%synergy
Castle Vantress
9.1%inclusion3 decks33 decks
6%synergy
Otawara, Soaring City
9.1%inclusion3 decks33 decks
-7%synergy
Mana Artifacts
Sol Ring
82%inclusion27 decks33 decks
-2%synergy
Arcane Signet
73%inclusion24 decks33 decks
1%synergy
Talisman of Creativity
45%inclusion15 decks33 decks
18%synergy
Everflowing Chalice
33%inclusion11 decks33 decks
29%synergy
Mox Amber
33%inclusion11 decks33 decks
29%synergy
Mox Opal
30%inclusion10 decks33 decks
26%synergy
Paradise Mantle
21%inclusion7 decks33 decks
20%synergy
Lotus Petal
21%inclusion7 decks33 decks
14%synergy
Chromatic Lantern
21%inclusion7 decks33 decks
13%synergy
Talisman of Progress
21%inclusion7 decks33 decks
-4%synergy
Solar Transformer
18%inclusion6 decks33 decks
18%synergy
Fellwar Stone
18%inclusion6 decks33 decks
-2%synergy
Aetheric Amplifier
17%inclusion4 decks23 decks
17%synergy
Machine God's Effigy
12%inclusion4 decks33 decks
11%synergy
Cursed Mirror
12%inclusion4 decks33 decks
7%synergy
Commander's Sphere
12%inclusion4 decks33 decks
0%synergy
Thought Vessel
12%inclusion4 decks33 decks
-5%synergy
Talisman of Conviction
12%inclusion4 decks33 decks
-12%synergy
Conversion Apparatus
9.1%inclusion3 decks33 decks
9%synergy
Liquimetal Torque
9.1%inclusion3 decks33 decks
6%synergy
Mind Stone
9.1%inclusion3 decks33 decks
-5%synergy
Boros Signet
9.1%inclusion3 decks33 decks
-10%synergy
Azorius Signet
9.1%inclusion3 decks33 decks
-12%synergy
Izzet Signet
9.1%inclusion3 decks33 decks
-14%synergy
Lands
Command Tower
94%inclusion31 decks33 decks
20%synergy
Spire of Industry
64%inclusion21 decks33 decks
61%synergy
Steam Vents
61%inclusion20 decks33 decks
22%synergy
Hallowed Fountain
61%inclusion20 decks33 decks
21%synergy
Slagwoods Bridge
60%inclusion3 decks5 decks
58%synergy
Tanglepool Bridge
60%inclusion3 decks5 decks
58%synergy
Ketria Triome
60%inclusion3 decks5 decks
30%synergy
Sacred Foundry
58%inclusion19 decks33 decks
21%synergy
Luxury Suite
50%inclusion4 decks8 decks
26%synergy
Training Center
48%inclusion16 decks33 decks
24%synergy
Glacial Fortress
48%inclusion16 decks33 decks
16%synergy
Sulfur Falls
48%inclusion16 decks33 decks
13%synergy
Clifftop Retreat
45%inclusion15 decks33 decks
10%synergy
Flooded Strand
42%inclusion14 decks33 decks
31%synergy
Raugrin Triome
42%inclusion14 decks33 decks
19%synergy
Sea of Clouds
42%inclusion14 decks33 decks
18%synergy
Aether Hub
39%inclusion13 decks33 decks
39%synergy
Arid Mesa
39%inclusion13 decks33 decks
29%synergy
Scalding Tarn
39%inclusion13 decks33 decks
29%synergy
Exotic Orchard
39%inclusion13 decks33 decks
3%synergy
Vault of Champions
38%inclusion3 decks8 decks
14%synergy
Razortide Bridge
36%inclusion12 decks33 decks
30%synergy
Silverbluff Bridge
33%inclusion11 decks33 decks
28%synergy
Rustvale Bridge
30%inclusion10 decks33 decks
25%synergy
Cascade Bluffs
27%inclusion9 decks33 decks
13%synergy
Spectator Seating
27%inclusion9 decks33 decks
5%synergy
Fabled Passage
24%inclusion8 decks33 decks
15%synergy
Stormcarved Coast
24%inclusion8 decks33 decks
5%synergy
Battlefield Forge
24%inclusion8 decks33 decks
-5%synergy
Mana Confluence
21%inclusion7 decks33 decks
14%synergy
Riverglide Pathway
18%inclusion6 decks33 decks
11%synergy
Thundering Falls
18%inclusion6 decks33 decks
9%synergy
Terramorphic Expanse
18%inclusion6 decks33 decks
3%synergy
Deserted Beach
18%inclusion6 decks33 decks
1%synergy
Evolving Wilds
18%inclusion6 decks33 decks
-3%synergy
Adarkar Wastes
18%inclusion6 decks33 decks
-6%synergy
The Mycosynth Gardens
15%inclusion5 decks33 decks
13%synergy
Reflecting Pool
15%inclusion5 decks33 decks
10%synergy
City of Brass
15%inclusion5 decks33 decks
8%synergy
Elegant Parlor
15%inclusion5 decks33 decks
8%synergy
Meticulous Archive
15%inclusion5 decks33 decks
7%synergy
Mystic Monastery
15%inclusion5 decks33 decks
-13%synergy
Shivan Reef
15%inclusion5 decks33 decks
-14%synergy
Hengegate Pathway
12%inclusion4 decks33 decks
6%synergy
Needleverge Pathway
12%inclusion4 decks33 decks
5%synergy
Bloodstained Mire
12%inclusion4 decks33 decks
1%synergy
Azorius Chancery
12%inclusion4 decks33 decks
-1%synergy
Glimmervoid
9.1%inclusion3 decks33 decks
9%synergy
Power Depot
9.1%inclusion3 decks33 decks
8%synergy
Ash Barrens
9.1%inclusion3 decks33 decks
4%synergy