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 .
  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 .
  7. Repeat.
Results
Infinite blue mana. Infinite landfall triggers. Infinite red mana.

Jhoira, Ageless Innovator
1.19% of 2106 decks 25 decks
Saheeli, the Sun's Brilliance
0.83% of 1452 decks 12 decks
Dr. Madison Li
0.15% of 3967 decks 6 decks
Ashnod the Uncaring
0.20% of 2943 decks 6 decks
Sakashima of a Thousand Faces // Toggo, Goblin Weaponsmith
3.64% of 165 decks 6 decks
Silas Renn, Seeker Adept // Toggo, Goblin Weaponsmith
2.24% of 223 decks 5 decks
Ishai, Ojutai Dragonspeaker // Toggo, Goblin Weaponsmith
11.43% of 35 decks 4 decks
Glacian, Powerstone Engineer // Toggo, Goblin Weaponsmith
3.92% of 102 decks 4 decks
Breya, Etherium Shaper
0.01% of 13853 decks 2 decks
Ludevic, Necro-Alchemist // Toggo, Goblin Weaponsmith
16.67% of 6 decks 1 decks
Jhoira of the Ghitu
0.03% of 3131 decks 1 decks
Kediss, Emberclaw Familiar // Silas Renn, Seeker Adept
3.57% of 28 decks 1 decks
Omnath, Locus of All
0.01% of 12969 decks 1 decks
Mairsil, the Pretender
0.06% of 1576 decks 1 decks
Ghost of Ramirez DePietro // Toggo, Goblin Weaponsmith
50.00% of 2 decks 1 decks
Rashmi and Ragavan
0.02% of 5146 decks 1 decks
Tetsuo, Imperial Champion
0.03% of 2908 decks 1 decks
Mishra, Eminent One
0.01% of 7731 decks 1 decks
High Synergy Cards
Jolted Awake
100% of 6 decks +99% synergy
Guide of Souls
100% of 6 decks +96% synergy
Vault of Whispers
100% of 19 decks +96% synergy
Ancient Den
100% of 16 decks +95% synergy
Tree of Tales
86% of 7 decks +84% synergy
Wrath of the Skies
71% of 7 decks +71% synergy
Automated Assembly Line
67% of 9 decks +66% synergy
Darksteel Citadel
64% of 88 decks +60% synergy
Dispatch
62% of 16 decks +57% synergy
Ruin Ghost
56% of 16 decks +56% synergy
Top Cards
Esper Sentinel
75% of 16 decks +54% synergy
Haywire Mite
57% of 7 decks +53% synergy
Tireless Provisioner
57% of 7 decks +46% synergy
Enlightened Tutor
56% of 16 decks +38% synergy
Solemn Simulacrum
56% of 88 decks +42% synergy
Etherium Sculptor
55% of 88 decks +49% synergy
Goblin Engineer
53% of 88 decks +50% synergy
Teshar, Ancestor's Apostle
50% of 16 decks +48% synergy
Path to Exile
50% of 16 decks +5% synergy
Swords to Plowshares
50% of 16 decks -13% synergy
Creatures
Peregrin Took
75% of 4 decks +70% synergy
Master Transmuter
49% of 88 decks +47% synergy
Emry, Lurker of the Loch
49% of 88 decks +45% synergy
Enthusiastic Mechanaut
47% of 85 decks +43% synergy
Thought Monitor
46% of 87 decks +43% synergy
Tireless Tracker
43% of 7 decks +38% synergy
Oracle of Mul Daya
43% of 7 decks +37% synergy
Ramunap Excavator
43% of 7 decks +36% synergy
Azusa, Lost but Seeking
43% of 7 decks +35% synergy
Tatyova, Benthic Druid
43% of 7 decks +31% synergy
Foundry Inspector
42% of 88 decks +38% synergy
Reckless Fireweaver
42% of 88 decks +38% synergy
Jhoira, Weatherlight Captain
42% of 88 decks +36% synergy
Phyrexian Metamorph
40% of 88 decks +33% synergy
Marionette Master
37% of 19 decks +33% synergy
Urza, Lord High Artificer
36% of 88 decks +33% synergy
Padeem, Consul of Innovation
34% of 88 decks +31% synergy
Sai, Master Thopterist
34% of 88 decks +31% synergy
Brotherhood Scribe
33% of 9 decks +32% synergy
Scrap Trawler
33% of 88 decks +31% synergy
Myr Retriever
32% of 88 decks +30% synergy
Myr Battlesphere
32% of 88 decks +30% synergy
Baleful Strix
32% of 19 decks +18% synergy
Lion Sash
31% of 16 decks +28% synergy
Kappa Cannoneer
31% of 85 decks +28% synergy
Roil Cartographer
30% of 23 decks +29% synergy
Wurmcoil Engine
28% of 88 decks +26% synergy
Cyberdrive Awakener
28% of 85 decks +26% synergy
Shao Jun
27% of 11 decks +24% synergy
The Reality Chip
27% of 85 decks +23% synergy
Ob Nixilis, the Fallen
26% of 19 decks +25% synergy
Meteor Golem
25% of 88 decks +23% synergy
Brudiclad, Telchor Engineer
25% of 88 decks +21% synergy
Kuldotha Forgemaster
24% of 88 decks +23% synergy
Walking Atlas
23% of 88 decks +22% synergy
Threefold Thunderhulk
23% of 44 decks +22% synergy
Shimmer Dragon
23% of 88 decks +21% synergy
Volatile Stormdrake
22% of 23 decks +18% synergy
Corridor Monitor
22% of 88 decks +21% synergy
Ingenious Artillerist
21% of 84 decks +19% synergy
Ioreth of the Healing House
21% of 52 decks +20% synergy
Puresteel Paladin
19% of 16 decks +15% synergy
Triplicate Titan
18% of 87 decks +18% synergy
Cybermen Squadron
18% of 44 decks +17% synergy
Spellskite
18% of 88 decks +15% synergy
Mirran Spy
17% of 88 decks +17% synergy
Vedalken Archmage
16% of 88 decks +15% synergy
Blightsteel Colossus
16% of 88 decks +14% synergy
Combustible Gearhulk
16% of 88 decks +13% synergy
Burnished Hart
16% of 88 decks +12% synergy
Instants
Beast Within
43% of 7 decks +4% synergy
Chaos Warp
42% of 88 decks +10% synergy
Counterspell
42% of 88 decks -1% synergy
Bedevil
32% of 19 decks +17% synergy
Kabira Takedown
31% of 16 decks +30% synergy
Sejiri Shelter
31% of 16 decks +28% synergy
Silence
31% of 16 decks +25% synergy
Teferi's Protection
31% of 16 decks +11% synergy
Cyclonic Rift
31% of 88 decks +3% synergy
Whir of Invention
30% of 88 decks +26% synergy
An Offer You Can't Refuse
27% of 84 decks +7% synergy
Arcane Denial
26% of 88 decks +7% synergy
Galvanic Discharge
26% of 23 decks +25% synergy
Tune the Narrative
26% of 23 decks +25% synergy
Rush of Inspiration
22% of 23 decks +19% synergy
Swan Song
19% of 88 decks +3% synergy
Mana Drain
18% of 88 decks +3% synergy
Fierce Guardianship
18% of 88 decks +0% synergy
Dramatic Reversal
17% of 88 decks +12% synergy
Pongify
17% of 88 decks +5% synergy
Negate
17% of 88 decks -6% synergy
Thirst for Knowledge
16% of 88 decks +14% synergy
Brainstorm
16% of 88 decks -5% synergy
Deflecting Swat
15% of 88 decks -1% synergy
Abrade
14% of 88 decks +2% synergy
Rapid Hybridization
12% of 88 decks +3% synergy
Radstorm
11% of 44 decks +9% synergy
Reality Shift
11% of 88 decks +2% synergy
Demand Answers
11% of 36 decks +4% synergy
Three Steps Ahead
11% of 28 decks +6% synergy
Resculpt
10% of 87 decks +5% synergy
Mystical Tutor
7% of 88 decks -8% synergy
Shore Up
6% of 81 decks +5% synergy
Big Score
6% of 84 decks -3% synergy
Disruption Protocol
6% of 85 decks +5% synergy
Cerulean Wisps
6% of 88 decks +5% synergy
Fact or Fiction
6% of 88 decks -1% synergy
Force of Negation
6% of 88 decks -3% synergy
Lightning Bolt
6% of 88 decks -5% synergy
Frantic Search
6% of 88 decks -6% synergy
Sorceries
Farseek
43% of 7 decks +9% synergy
Feed the Swarm
42% of 19 decks +24% synergy
Thoughtcast
40% of 88 decks +36% synergy
Fabricate
39% of 88 decks +33% synergy
Blasphemous Act
39% of 88 decks +5% synergy
Terisiare's Devastation
29% of 17 decks +29% synergy
Vandalblast
26% of 88 decks +10% synergy
One with the Machine
17% of 88 decks +16% synergy
Trash for Treasure
16% of 88 decks +15% synergy
Faithless Looting
15% of 88 decks -2% synergy
Jeska's Will
14% of 88 decks -4% synergy
Rise and Shine
11% of 87 decks +10% synergy
Saheeli's Directive
11% of 88 decks +11% synergy
Reverse Engineer
10% of 88 decks +10% synergy
Universal Surveillance
9% of 85 decks +9% synergy
Scrap Mastery
9% of 88 decks +8% synergy
Nahiri's Lithoforming
9% of 88 decks +8% synergy
Reckless Handling
9% of 58 decks +7% synergy
Expressive Iteration
8% of 87 decks +1% synergy
Reshape
8% of 88 decks +6% synergy
Windfall
8% of 88 decks -5% synergy
Forging the Anchor
8% of 78 decks +7% synergy
Indomitable Creativity
7% of 88 decks +7% synergy
Traverse Eternity
7% of 44 decks +6% synergy
Sea Gate Restoration
7% of 88 decks +2% synergy
Gamble
7% of 88 decks -3% synergy
Lórien Revealed
6% of 48 decks +3% synergy
Saheeli's Artistry
6% of 88 decks +5% synergy
Utility Artifacts
Lightning Greaves
44% of 88 decks +19% synergy
Conduit of Worlds
43% of 7 decks +36% synergy
Glass Casket
38% of 16 decks +37% synergy
Shorikai, Genesis Engine
38% of 16 decks +35% synergy
Worldwalker Helm
36% of 28 decks +34% synergy
Krark-Clan Ironworks
35% of 88 decks +34% synergy
Wayfarer's Bauble
35% of 88 decks +25% synergy
Swiftfoot Boots
33% of 88 decks +5% synergy
Unwinding Clock
32% of 88 decks +29% synergy
Executioner's Capsule
32% of 19 decks +31% synergy
Cranial Plating
32% of 19 decks +30% synergy
Oni-Cult Anvil
32% of 19 decks +30% synergy
Time Sieve
32% of 19 decks +29% synergy
Portable Hole
31% of 16 decks +31% synergy
Sensei's Divining Top
31% of 88 decks +25% synergy
Simulacrum Synthesizer
29% of 28 decks +26% synergy
Crucible of Worlds
27% of 88 decks +25% synergy
Mystic Forge
27% of 88 decks +24% synergy
Sculpting Steel
26% of 88 decks +24% synergy
Izzet Generatorium
26% of 23 decks +23% synergy
Esoteric Duplicator
25% of 28 decks +24% synergy
Thousand-Year Elixir
25% of 88 decks +23% synergy
Portal to Phyrexia
24% of 78 decks +22% synergy
Sting, the Glinting Dagger
24% of 50 decks +22% synergy
Ichor Wellspring
24% of 88 decks +22% synergy
Aether Refinery
22% of 23 decks +21% synergy
Encroaching Mycosynth
21% of 71 decks +20% synergy
Nihil Spellbomb
21% of 19 decks +20% synergy
Bolas's Citadel
21% of 19 decks +12% synergy
Mirrorworks
20% of 88 decks +20% synergy
Clock of Omens
20% of 88 decks +19% synergy
Archaeomancer's Map
19% of 16 decks +15% synergy
Rings of Brighthearth
18% of 88 decks +16% synergy
Cloud Key
18% of 88 decks +16% synergy
Unstable Amulet
17% of 23 decks +16% synergy
Mishra's Bauble
17% of 88 decks +16% synergy
Staff of Domination
17% of 88 decks +15% synergy
Idol of Oblivion
17% of 88 decks +13% synergy
Sword of the Animist
17% of 88 decks +12% synergy
Darksteel Monolith
15% of 47 decks +14% synergy
Illusionist's Bracers
15% of 88 decks +14% synergy
Expedition Map
15% of 88 decks +12% synergy
Navigation Orb
14% of 84 decks +14% synergy
The One Ring
14% of 63 decks +5% synergy
Brass's Tunnel-Grinder
14% of 43 decks +11% synergy
Spine of Ish Sah
14% of 88 decks +13% synergy
Darksteel Forge
14% of 88 decks +12% synergy
Lithoform Engine
14% of 88 decks +12% synergy
Chimil, the Inner Sun
13% of 39 decks +10% synergy
Trading Post
12% of 88 decks +11% synergy
Enchantments
Storm the Vault
34% of 88 decks +31% synergy
Felidar Retreat
31% of 16 decks +24% synergy
Rhystic Study
25% of 88 decks -3% synergy
Freed from the Real
24% of 88 decks +22% synergy
Aether Revolt
23% of 22 decks +22% synergy
Thopter Spy Network
23% of 88 decks +19% synergy
Valakut Exploration
22% of 88 decks +19% synergy
Retreat to Hagra
21% of 19 decks +19% synergy
Retreat to Emeria
19% of 16 decks +18% synergy
Smothering Tithe
19% of 16 decks -6% synergy
Mechanized Production
17% of 88 decks +14% synergy
Pemmin's Aura
16% of 88 decks +15% synergy
Mirrodin Besieged
16% of 88 decks +14% synergy
Mystic Remora
16% of 88 decks -2% synergy
Biotransference
16% of 19 decks +15% synergy
Artificer Class
15% of 84 decks +14% synergy
Intruder Alarm
15% of 88 decks +13% synergy
Ghirapur Aether Grid
12% of 88 decks +12% synergy
Determined Iteration
11% of 84 decks +10% synergy
Clan Crafter
10% of 84 decks +9% synergy
All Will Be One
9% of 67 decks +6% synergy
Trade Routes
6% of 88 decks +5% synergy
Bitter Reunion
5% of 78 decks +3% synergy
Planeswalkers
Oko, Thief of Crowns
43% of 7 decks +37% synergy
Daretti, Scrap Savant
31% of 88 decks +28% synergy
Tezzeret, Master of the Bridge
21% of 19 decks +19% synergy
Saheeli, Filigree Master
15% of 78 decks +14% synergy
Saheeli, Sublime Artificer
15% of 88 decks +10% synergy
Tezzeret the Seeker
12% of 88 decks +10% synergy
Saheeli, the Gifted
11% of 88 decks +11% synergy
Karn, the Great Creator
6% of 88 decks +4% synergy
Utility Lands
Fomori Vault
54% of 26 decks +52% synergy
Inventors' Fair
45% of 88 decks +42% synergy
Archway of Innovation
45% of 22 decks +40% synergy
Buried Ruin
44% of 88 decks +39% synergy
Boseiju, Who Endures
43% of 7 decks +23% synergy
Academy Ruins
36% of 88 decks +31% synergy
Reliquary Tower
31% of 88 decks +1% synergy
Treasure Vault
31% of 85 decks +28% synergy
Urza's Saga
21% of 87 decks +13% synergy
Minamo, School at Water's Edge
20% of 88 decks +16% synergy
Otawara, Soaring City
20% of 85 decks +3% synergy
Oboro, Palace in the Clouds
10% of 88 decks +10% synergy
Tolaria West
10% of 88 decks +9% synergy
Guildless Commons
10% of 88 decks +9% synergy
Ghost Town
8% of 88 decks +8% synergy
Field of the Dead
8% of 88 decks +5% synergy
Rogue's Passage
8% of 88 decks -11% synergy
Terrain Generator
7% of 88 decks +6% synergy
Urza's Power Plant
7% of 88 decks +5% synergy
Urza's Mine
7% of 88 decks +5% synergy
Urza's Tower
7% of 88 decks +5% synergy
Ancient Tomb
7% of 88 decks -4% synergy
Rivendell
6% of 54 decks +0% synergy
Mana Artifacts
Sol Ring
90% of 88 decks +5% synergy
Arcane Signet
84% of 88 decks +12% synergy
Izzet Signet
45% of 88 decks +17% synergy
Talisman of Creativity
45% of 88 decks +17% synergy
Talisman of Progress
44% of 16 decks +21% synergy
Rakdos Signet
32% of 19 decks +2% synergy
Dimir Signet
32% of 19 decks +2% synergy
Liquimetal Torque
28% of 87 decks +24% synergy
Talisman of Indulgence
26% of 19 decks +0% synergy
Talisman of Dominance
26% of 19 decks -5% synergy
Mind Stone
26% of 88 decks +9% synergy
Boros Signet
25% of 16 decks +1% synergy
Azorius Signet
25% of 16 decks -1% synergy
Patriar's Seal
23% of 84 decks +21% synergy
Thran Dynamo
22% of 88 decks +17% synergy
Fellwar Stone
22% of 88 decks +1% synergy
Cursed Mirror
20% of 87 decks +14% synergy
Gilded Lotus
18% of 88 decks +15% synergy
Thought Vessel
16% of 88 decks -1% synergy
Mox Opal
15% of 88 decks +10% synergy
Commander's Sphere
15% of 88 decks -1% synergy
Conversion Apparatus
14% of 22 decks +13% synergy
Mox Amber
14% of 88 decks +9% synergy
Lotus Petal
12% of 88 decks +6% synergy
Basalt Monolith
11% of 88 decks +9% synergy
Hedron Archive
10% of 88 decks +7% synergy
Mana Vault
10% of 88 decks +4% synergy
Misleading Signpost
9% of 45 decks +7% synergy
Coveted Jewel
8% of 88 decks +7% synergy
Everflowing Chalice
8% of 88 decks +3% synergy
Mana Crypt
8% of 88 decks -1% synergy
Machine God's Effigy
8% of 78 decks +6% synergy
Chrome Mox
7% of 88 decks +0% synergy
The Mightstone and Weakstone
6% of 78 decks +6% synergy
Chromatic Orrery
6% of 88 decks +4% synergy
Lands
Breeding Pool
100% of 7 decks +59% synergy
Stomping Ground
100% of 7 decks +59% synergy
Command Tower
82% of 88 decks +8% synergy
Drossforge Bridge
79% of 19 decks +75% synergy
Mistvault Bridge
79% of 19 decks +74% synergy
Silverbluff Bridge
76% of 87 decks +70% synergy
Hallowed Fountain
75% of 16 decks +34% synergy
Slagwoods Bridge
71% of 7 decks +69% synergy
Tanglepool Bridge
71% of 7 decks +69% synergy
Sacred Foundry
69% of 16 decks +32% synergy
Watery Grave
68% of 19 decks +28% synergy
Steam Vents
61% of 88 decks +22% synergy
Blood Crypt
58% of 19 decks +19% synergy
Ketria Triome
57% of 7 decks +25% synergy
Sulfur Falls
51% of 88 decks +21% synergy
Izzet Boilerworks
49% of 88 decks +33% synergy
Xander's Lounge
47% of 19 decks +20% synergy
Scalding Tarn
45% of 88 decks +34% synergy
Training Center
44% of 88 decks +17% synergy
Glacial Fortress
44% of 16 decks +18% synergy
Clifftop Retreat
44% of 16 decks +16% synergy
Shivan Reef
39% of 88 decks +12% synergy
Razortide Bridge
38% of 16 decks +30% synergy
Hengegate Pathway
38% of 16 decks +30% synergy
Needleverge Pathway
38% of 16 decks +28% synergy
Spectator Seating
38% of 16 decks +12% synergy
Sea of Clouds
38% of 16 decks +11% synergy
Stormcarved Coast
34% of 85 decks +17% synergy
Dimir Aqueduct
32% of 19 decks +15% synergy
Crumbling Necropolis
32% of 19 decks +0% synergy
Rustvale Bridge
31% of 16 decks +26% synergy
Rakdos Carnarium
26% of 19 decks +11% synergy
Haunted Ridge
26% of 19 decks +10% synergy
Drowned Catacomb
26% of 19 decks +1% synergy
Luxury Suite
26% of 19 decks -0% synergy
Dragonskull Summit
26% of 19 decks -4% synergy
Terramorphic Expanse
26% of 88 decks +10% synergy
Thundering Falls
26% of 35 decks +15% synergy
Battlefield Forge
25% of 16 decks -0% synergy
Spire of Industry
23% of 88 decks +20% synergy
Fabled Passage
23% of 88 decks +14% synergy
Evolving Wilds
23% of 88 decks +2% synergy
Arid Mesa
22% of 88 decks +11% synergy
Morphic Pool
21% of 19 decks -5% synergy
Flooded Strand
20% of 88 decks +10% synergy
Cascade Bluffs
20% of 88 decks +9% synergy
Riverglide Pathway
19% of 88 decks +10% synergy
Polluted Delta
19% of 88 decks +8% synergy
Exotic Orchard
19% of 88 decks -16% synergy
Azorius Chancery
19% of 16 decks +4% synergy