Goblin Welder + Retreat to Coralhelm + Seat of the Synod + Great Furnace

Goblin Welder
Retreat to Coralhelm
Seat of the Synod
Great Furnace

Requires
Goblin Welder must be on the battlefield. Retreat to Coralhelm must be on the battlefield. Seat of the Synod must be in the graveyard. Great Furnace must be on the battlefield. Goblin Welder does not have summoning sickness.
Steps
  1. Activate Goblin Welder by tapping it, causing you to sacrifice Great Furnace 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 u.
  4. Activate Goblin Welder by tapping it, causing you to sacrifice Seat of the Synod 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 r.
  7. Repeat.
Results
Infinite blue mana. Infinite landfall triggers. Infinite red mana.

Top Commanders (2)
Jhoira, Ageless Innovator
1.30% of 2235 decks 29 decks
Saheeli, the Sun's Brilliance
1.09% of 917 decks 10 decks
New Cards (5)
Fomori Vault
80% of 5 decks +77% synergy
Esoteric Duplicator
50% of 6 decks +49% synergy
Simulacrum Synthesizer
50% of 6 decks +48% synergy
Demand Answers
23% of 13 decks +17% synergy
Forensic Gadgeteer
23% of 13 decks +20% synergy
Top Cards (10)
Haywire Mite
80% of 5 decks +78% synergy
Tireless Provisioner
80% of 5 decks +75% synergy
Solemn Simulacrum
65% of 82 decks +50% synergy
Emry, Lurker of the Loch
60% of 82 decks +58% synergy
Master Transmuter
57% of 82 decks +56% synergy
Goblin Engineer
55% of 82 decks +53% synergy
Thought Monitor
54% of 81 decks +53% synergy
Chaos Warp
52% of 82 decks +37% synergy
Etherium Sculptor
51% of 82 decks +48% synergy
Swords to Plowshares
50% of 12 decks +22% synergy
Creatures (50)
Peregrin Took
100% of 3 decks +97% synergy
Tireless Tracker
60% of 5 decks +58% synergy
Jhoira, Weatherlight Captain
49% of 82 decks +47% synergy
Reckless Fireweaver
49% of 82 decks +47% synergy
Enthusiastic Mechanaut
48% of 79 decks +47% synergy
Phyrexian Metamorph
45% of 82 decks +42% synergy
Sai, Master Thopterist
44% of 82 decks +42% synergy
Esper Sentinel
42% of 12 decks +32% synergy
Myr Battlesphere
41% of 82 decks +39% synergy
Threefold Thunderhulk
40% of 20 decks +38% synergy
Padeem, Consul of Innovation
38% of 82 decks +36% synergy
Marionette Master
37% of 19 decks +35% synergy
Scrap Trawler
35% of 82 decks +33% synergy
Foundry Inspector
35% of 82 decks +31% synergy
Wurmcoil Engine
34% of 82 decks +32% synergy
Tameshi, Reality Architect
33% of 12 decks +33% synergy
Sun Titan
33% of 12 decks +28% synergy
Cyberdrive Awakener
32% of 79 decks +30% synergy
Baleful Strix
32% of 19 decks +28% synergy
Myr Retriever
30% of 82 decks +28% synergy
Cybermen Squadron
30% of 23 decks +29% synergy
Kappa Cannoneer
30% of 79 decks +29% synergy
Kuldotha Forgemaster
28% of 82 decks +27% synergy
Ingenious Artillerist
27% of 73 decks +26% synergy
Shimmer Dragon
27% of 82 decks +26% synergy
Urza, Lord High Artificer
27% of 82 decks +25% synergy
Meteor Golem
27% of 82 decks +24% synergy
The Reality Chip
27% of 79 decks +24% synergy
Ob Nixilis, the Fallen
26% of 19 decks +26% synergy
Corridor Monitor
26% of 82 decks +25% synergy
Ruin Ghost
25% of 12 decks +25% synergy
Weathered Wayfarer
25% of 12 decks +23% synergy
Walking Atlas
24% of 82 decks +24% synergy
Ioreth of the Healing House
24% of 33 decks +23% synergy
Brudiclad, Telchor Engineer
23% of 82 decks +22% synergy
Steel Hellkite
22% of 82 decks +20% synergy
Disciple of the Vault
21% of 19 decks +20% synergy
Blightsteel Colossus
21% of 82 decks +19% synergy
Burnished Hart
21% of 82 decks +16% synergy
Imotekh the Stormlord
20% of 15 decks +20% synergy
Trumpeting Carnosaur
20% of 20 decks +17% synergy
Triplicate Titan
20% of 81 decks +19% synergy
Combustible Gearhulk
20% of 82 decks +18% synergy
Kelpie Guide
19% of 81 decks +18% synergy
Dockside Extortionist
18% of 82 decks +10% synergy
Scaretiller
17% of 82 decks +17% synergy
Karn, Legacy Reforged
16% of 37 decks +15% synergy
Vedalken Archmage
16% of 82 decks +15% synergy
Spellskite
16% of 82 decks +14% synergy
Mirran Spy
15% of 82 decks +14% synergy
Instants (35)
Counterspell
44% of 82 decks +23% synergy
Dispatch
42% of 12 decks +39% synergy
Enlightened Tutor
33% of 12 decks +25% synergy
Whir of Invention
33% of 82 decks +31% synergy
Cyclonic Rift
24% of 82 decks +10% synergy
Arcane Denial
23% of 82 decks +14% synergy
An Offer You Can't Refuse
22% of 77 decks +12% synergy
Thirst for Knowledge
22% of 82 decks +21% synergy
Bedevil
21% of 19 decks +18% synergy
Deadly Dispute
21% of 19 decks +16% synergy
Negate
20% of 82 decks +8% synergy
Deflecting Swat
18% of 82 decks +11% synergy
Abrade
17% of 82 decks +12% synergy
Mana Drain
17% of 82 decks +9% synergy
Fierce Guardianship
17% of 82 decks +8% synergy
Dramatic Reversal
16% of 82 decks +13% synergy
Swan Song
16% of 82 decks +8% synergy
Reality Shift
15% of 82 decks +10% synergy
Pongify
15% of 82 decks +9% synergy
Resculpt
14% of 81 decks +11% synergy
Rapid Hybridization
12% of 82 decks +8% synergy
Brainstorm
12% of 82 decks +1% synergy
Unexpected Windfall
9% of 80 decks +5% synergy
Wild Magic Surge
8% of 75 decks +6% synergy
Big Score
8% of 77 decks +3% synergy
Thrill of Possibility
7% of 82 decks +2% synergy
Shore Up
7% of 58 decks +6% synergy
Reality Heist
6% of 79 decks +6% synergy
Cerulean Wisps
6% of 82 decks +6% synergy
Muddle the Mixture
6% of 82 decks +3% synergy
Force of Negation
6% of 82 decks +1% synergy
Lightning Bolt
6% of 82 decks +1% synergy
Frantic Search
6% of 82 decks +0% synergy
Mystical Tutor
6% of 82 decks -2% synergy
Disruption Protocol
5% of 79 decks +5% synergy
Sorceries (30)
Thoughtcast
49% of 82 decks +47% synergy
Blasphemous Act
46% of 82 decks +30% synergy
Fabricate
35% of 82 decks +32% synergy
Feed the Swarm
32% of 19 decks +22% synergy
Vandalblast
27% of 82 decks +19% synergy
Sevinne's Reclamation
25% of 12 decks +22% synergy
One with the Machine
23% of 82 decks +23% synergy
Terisiare's Devastation
23% of 13 decks +23% synergy
Demonic Tutor
21% of 19 decks +9% synergy
Reverse Engineer
18% of 82 decks +18% synergy
Saheeli's Directive
16% of 82 decks +16% synergy
Toxic Deluge
16% of 19 decks +8% synergy
Faithless Looting
15% of 82 decks +6% synergy
Reckless Handling
14% of 37 decks +12% synergy
Scrap Mastery
13% of 82 decks +13% synergy
Trash for Treasure
13% of 82 decks +13% synergy
Jeska's Will
13% of 82 decks +5% synergy
Universal Surveillance
11% of 79 decks +11% synergy
Rise and Shine
11% of 81 decks +10% synergy
Reshape
11% of 82 decks +10% synergy
Windfall
11% of 82 decks +4% synergy
Forging the Anchor
11% of 56 decks +11% synergy
Indomitable Creativity
10% of 82 decks +10% synergy
Saheeli's Artistry
9% of 82 decks +8% synergy
Expressive Iteration
7% of 81 decks +6% synergy
Nahiri's Lithoforming
7% of 82 decks +7% synergy
Echo Storm
6% of 82 decks +6% synergy
Cleansing Wildfire
6% of 82 decks +6% synergy
Gamble
6% of 82 decks +1% synergy
March of Progress
6% of 53 decks +5% synergy
Utility Artifacts (50)
Swiftfoot Boots
45% of 82 decks +17% synergy
Lightning Greaves
44% of 82 decks +18% synergy
Wayfarer's Bauble
40% of 82 decks +29% synergy
Unwinding Clock
37% of 82 decks +34% synergy
Archaeomancer's Map
33% of 12 decks +31% synergy
Sculpting Steel
33% of 82 decks +31% synergy
Cranial Plating
32% of 19 decks +31% synergy
Sting, the Glinting Dagger
31% of 32 decks +29% synergy
Krark-Clan Ironworks
29% of 82 decks +28% synergy
Crucible of Worlds
29% of 82 decks +27% synergy
Mirrorworks
27% of 82 decks +26% synergy
Thousand-Year Elixir
27% of 82 decks +24% synergy
Executioner's Capsule
26% of 19 decks +26% synergy
Time Sieve
26% of 19 decks +26% synergy
Darksteel Forge
24% of 82 decks +23% synergy
Clock of Omens
23% of 82 decks +22% synergy
Oni-Cult Anvil
22% of 18 decks +22% synergy
Ichor Wellspring
22% of 82 decks +20% synergy
Bolas's Citadel
21% of 19 decks +16% synergy
Encroaching Mycosynth
20% of 49 decks +20% synergy
Portal to Phyrexia
20% of 56 decks +18% synergy
Sensei's Divining Top
20% of 82 decks +13% synergy
The One Ring
20% of 41 decks +11% synergy
Rings of Brighthearth
18% of 82 decks +16% synergy
Brass's Tunnel-Grinder
18% of 22 decks +16% synergy
Battlemage's Bracers
17% of 81 decks +17% synergy
Mycosynth Lattice
17% of 82 decks +16% synergy
Expedition Map
17% of 82 decks +13% synergy
Idol of Oblivion
17% of 82 decks +13% synergy
Navigation Orb
16% of 73 decks +16% synergy
Mystic Forge
16% of 82 decks +13% synergy
Sword of the Animist
16% of 82 decks +11% synergy
Spine of Ish Sah
15% of 82 decks +14% synergy
Cloud Key
15% of 82 decks +13% synergy
Chimil, the Inner Sun
14% of 21 decks +11% synergy
Prototype Portal
13% of 82 decks +13% synergy
Magewright's Stone
13% of 82 decks +13% synergy
Illusionist's Bracers
13% of 82 decks +12% synergy
Trading Post
13% of 82 decks +12% synergy
Inspiring Statuary
13% of 82 decks +12% synergy
Staff of Domination
13% of 82 decks +11% synergy
The Everflowing Well
13% of 23 decks +12% synergy
Darksteel Monolith
12% of 26 decks +10% synergy
Mycosynth Wellspring
10% of 82 decks +9% synergy
Soul-Guide Lantern
10% of 82 decks +8% synergy
Nevinyrral's Disk
10% of 82 decks +8% synergy
Lithoform Engine
10% of 82 decks +8% synergy
Isochron Scepter
10% of 82 decks +7% synergy
Skullclamp
10% of 82 decks -3% synergy
Mithril Coat
9% of 32 decks +3% synergy
Enchantments (21)
Felidar Retreat
42% of 12 decks +38% synergy
Storm the Vault
38% of 82 decks +37% synergy
Thopter Spy Network
33% of 82 decks +31% synergy
Retreat to Hagra
32% of 19 decks +31% synergy
Artificer Class
26% of 73 decks +25% synergy
Smothering Tithe
25% of 12 decks +13% synergy
Freed from the Real
23% of 82 decks +22% synergy
Rhystic Study
23% of 82 decks +9% synergy
Mirrodin Besieged
22% of 82 decks +21% synergy
Biotransference
20% of 15 decks +19% synergy
Valakut Exploration
18% of 82 decks +17% synergy
Mystic Remora
18% of 82 decks +9% synergy
Mechanized Production
16% of 82 decks +15% synergy
Ghirapur Aether Grid
13% of 82 decks +13% synergy
Pemmin's Aura
13% of 82 decks +13% synergy
Intruder Alarm
12% of 82 decks +11% synergy
Clan Crafter
11% of 73 decks +11% synergy
Determined Iteration
10% of 77 decks +10% synergy
The Antiquities War
9% of 82 decks +8% synergy
Trade Routes
9% of 82 decks +8% synergy
Bitter Reunion
8% of 53 decks +7% synergy
Planeswalkers (7)
Daretti, Scrap Savant
32% of 82 decks +30% synergy
Tezzeret, Master of the Bridge
26% of 19 decks +26% synergy
Saheeli, Sublime Artificer
20% of 82 decks +18% synergy
Saheeli, Filigree Master
16% of 55 decks +16% synergy
Saheeli, the Gifted
12% of 82 decks +12% synergy
Tezzeret the Seeker
12% of 82 decks +11% synergy
Karn, the Great Creator
9% of 82 decks +7% synergy
Utility Lands (24)
Vault of Whispers
95% of 19 decks +92% synergy
Ancient Den
92% of 12 decks +89% synergy
Tree of Tales
80% of 5 decks +79% synergy
Darksteel Citadel
72% of 82 decks +68% synergy
Buried Ruin
50% of 82 decks +45% synergy
Academy Ruins
43% of 82 decks +40% synergy
Inventors' Fair
41% of 82 decks +37% synergy
Treasure Vault
34% of 80 decks +31% synergy
Minamo, School at Water's Edge
24% of 82 decks +23% synergy
Reliquary Tower
24% of 82 decks -4% synergy
Urza's Saga
23% of 81 decks +16% synergy
Otawara, Soaring City
20% of 79 decks +12% synergy
Rivendell
13% of 30 decks +10% synergy
Oboro, Palace in the Clouds
12% of 82 decks +12% synergy
Tolaria West
11% of 82 decks +10% synergy
Guildless Commons
10% of 82 decks +8% synergy
Field of the Dead
10% of 82 decks +6% synergy
Ancient Tomb
10% of 82 decks -1% synergy
Ghost Town
7% of 82 decks +7% synergy
Urborg, Tomb of Yawgmoth
7% of 82 decks -3% synergy
Rogue's Passage
7% of 82 decks -11% synergy
Wandering Fumarole
6% of 82 decks +6% synergy
Desolate Lighthouse
6% of 82 decks +5% synergy
Ghost Quarter
6% of 82 decks +3% synergy
Mana Artifacts (34)
Sol Ring
88% of 82 decks +3% synergy
Arcane Signet
85% of 82 decks +15% synergy
Talisman of Hierarchy
60% of 5 decks +54% synergy
Izzet Signet
54% of 82 decks +47% synergy
Talisman of Creativity
49% of 82 decks +42% synergy
Boros Signet
42% of 12 decks +36% synergy
Azorius Signet
42% of 12 decks +35% synergy
Mind Stone
33% of 82 decks +15% synergy
Liquimetal Torque
32% of 81 decks +28% synergy
Talisman of Dominance
32% of 19 decks +24% synergy
Fellwar Stone
28% of 82 decks +7% synergy
Patriar's Seal
28% of 75 decks +26% synergy
Thran Dynamo
26% of 82 decks +21% synergy
Talisman of Conviction
25% of 12 decks +20% synergy
Gilded Lotus
24% of 82 decks +21% synergy
Commander's Sphere
22% of 82 decks +5% synergy
Talisman of Indulgence
21% of 19 decks +15% synergy
Dimir Signet
21% of 19 decks +13% synergy
Thought Vessel
18% of 82 decks +3% synergy
Cursed Mirror
16% of 81 decks +14% synergy
Hedron Archive
16% of 82 decks +13% synergy
Rakdos Signet
16% of 19 decks +9% synergy
Basalt Monolith
11% of 82 decks +8% synergy
Mox Opal
11% of 82 decks +7% synergy
Blinkmoth Urn
9% of 82 decks +8% synergy
Mana Crypt
9% of 82 decks -3% synergy
Machine God's Effigy
8% of 53 decks +7% synergy
Mox Amber
7% of 82 decks +3% synergy
Lotus Petal
7% of 82 decks +1% synergy
Coveted Jewel
6% of 82 decks +5% synergy
Dreamstone Hedron
6% of 82 decks +5% synergy
Chromatic Orrery
6% of 82 decks +4% synergy
Sky Diamond
6% of 82 decks +3% synergy
The Mightstone and Weakstone
6% of 53 decks +5% synergy
Lands (50)
Breeding Pool
100% of 5 decks +91% synergy
Stomping Ground
100% of 5 decks +91% synergy
Silverbluff Bridge
83% of 81 decks +81% synergy
Godless Shrine
80% of 5 decks +70% synergy
Mistvault Bridge
79% of 19 decks +78% synergy
Drossforge Bridge
74% of 19 decks +73% synergy
Command Tower
72% of 82 decks -1% synergy
Watery Grave
68% of 19 decks +58% synergy
Razortide Bridge
67% of 12 decks +65% synergy
Sacred Foundry
67% of 12 decks +58% synergy
Hallowed Fountain
67% of 12 decks +57% synergy
Slagwoods Bridge
60% of 5 decks +59% synergy
Tanglepool Bridge
60% of 5 decks +59% synergy
Goldmire Bridge
60% of 5 decks +59% synergy
Savai Triome
60% of 5 decks +57% synergy
Ketria Triome
60% of 5 decks +56% synergy
Steam Vents
59% of 82 decks +49% synergy
Rustvale Bridge
58% of 12 decks +57% synergy
Blood Crypt
53% of 19 decks +44% synergy
Shivan Reef
45% of 82 decks +39% synergy
Sulfur Falls
45% of 82 decks +39% synergy
Scalding Tarn
45% of 82 decks +34% synergy
Xander's Lounge
44% of 18 decks +41% synergy
Izzet Boilerworks
44% of 82 decks +40% synergy
Raugrin Triome
42% of 12 decks +39% synergy
Training Center
40% of 82 decks +34% synergy
Stormcarved Coast
34% of 79 decks +30% synergy
Terramorphic Expanse
28% of 82 decks +12% synergy
Evolving Wilds
27% of 82 decks +5% synergy
Haunted Ridge
26% of 19 decks +23% synergy
Azorius Chancery
25% of 12 decks +22% synergy
Cascade Bluffs
24% of 82 decks +22% synergy
Arid Mesa
23% of 82 decks +12% synergy
Flooded Strand
22% of 82 decks +12% synergy
The Mycosynth Gardens
22% of 46 decks +19% synergy
Crumbling Necropolis
21% of 19 decks +17% synergy
Drowned Catacomb
21% of 19 decks +15% synergy
Dragonskull Summit
21% of 19 decks +15% synergy
Polluted Delta
21% of 82 decks +10% synergy
Myriad Landscape
21% of 82 decks -0% synergy
Fabled Passage
20% of 82 decks +10% synergy
Fiery Islet
17% of 82 decks +16% synergy
Prismatic Vista
17% of 82 decks +11% synergy
Misty Rainforest
17% of 82 decks +5% synergy
Frostboil Snarl
16% of 81 decks +13% synergy
Spire of Industry
16% of 82 decks +13% synergy
Bloodstained Mire
16% of 82 decks +6% synergy
Exotic Orchard
16% of 82 decks -19% synergy
Graven Cairns
16% of 19 decks +14% synergy
Rakdos Carnarium
16% of 19 decks +12% synergy