Goblin Welder + Retreat to Coralhelm + Ancient Den + Great Furnace

Goblin Welder
Retreat to Coralhelm
Ancient Den
Great Furnace

Requires
Goblin Welder must be on the battlefield. Retreat to Coralhelm must be on the battlefield. Ancient Den 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 Ancient Den from your graveyard to the battlefield.
  2. Ancient Den enters the battlefield, triggering Retreat to Coralhelm, untapping Goblin Welder.
  3. Activate Ancient Den by tapping it, adding w.
  4. Activate Goblin Welder by tapping it, causing you to sacrifice Ancient Den 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 landfall triggers. Infinite red mana. Infinite white mana.

Top Commanders (6)
Ishai, Ojutai Dragonspeaker // Toggo, Goblin Weaponsmith
10.26% of 39 decks 4 decks
Bjorna, Nightfall Alchemist // Sophina, Spearsage Deserter
0.61% of 164 decks 1 decks
Elmar, Ulvenwald Informant // Hargilde, Kindly Runechanter
0.18% of 558 decks 1 decks
Dynaheir, Invoker Adept
0.07% of 1443 decks 1 decks
Breya, Etherium Shaper
0.02% of 12341 decks 3 decks
Omnath, Locus of All
0.01% of 9866 decks 1 decks
High Synergy Cards (10)
Goblin Engineer
73% of 11 decks +71% synergy
Reckless Fireweaver
45% of 11 decks +43% synergy
Felidar Retreat
45% of 11 decks +42% synergy
Tameshi, Reality Architect
36% of 11 decks +36% synergy
Valakut Exploration
36% of 11 decks +35% synergy
Urza, Lord High Artificer
36% of 11 decks +35% synergy
Thoughtcast
36% of 11 decks +35% synergy
Emry, Lurker of the Loch
36% of 11 decks +34% synergy
Dispatch
36% of 11 decks +34% synergy
Sun Titan
36% of 11 decks +31% synergy
Top Cards (10)
Wayfarer's Bauble
64% of 11 decks +52% synergy
Swords to Plowshares
55% of 11 decks +26% synergy
Crucible of Worlds
55% of 11 decks +52% synergy
Solemn Simulacrum
55% of 11 decks +40% synergy
Walking Atlas
45% of 11 decks +45% synergy
Esper Sentinel
45% of 11 decks +36% synergy
Enlightened Tutor
36% of 11 decks +28% synergy
Rhystic Study
36% of 11 decks +22% synergy
Brudiclad, Telchor Engineer
36% of 11 decks +36% synergy
Amulet of Vigor
36% of 11 decks +35% synergy
Creatures (17)
Thought Monitor
36% of 11 decks +35% synergy
Myr Retriever
36% of 11 decks +34% synergy
Skyswimmer Koi
27% of 11 decks +27% synergy
Ruin Ghost
27% of 11 decks +27% synergy
Quicksmith Genius
27% of 11 decks +27% synergy
Dreamscape Artist
27% of 11 decks +27% synergy
Junk Diver
27% of 11 decks +27% synergy
Master Transmuter
27% of 11 decks +26% synergy
Weathered Wayfarer
27% of 11 decks +26% synergy
Sai, Master Thopterist
27% of 11 decks +25% synergy
Wurmcoil Engine
27% of 11 decks +25% synergy
Myr Battlesphere
27% of 11 decks +25% synergy
Etherium Sculptor
27% of 11 decks +24% synergy
Imperial Recruiter
27% of 11 decks +24% synergy
Academy Manufactor
27% of 11 decks +24% synergy
Foundry Inspector
27% of 11 decks +23% synergy
Burnished Hart
27% of 11 decks +22% synergy
Sorceries (1)
Sevinne's Reclamation
27% of 11 decks +24% synergy
Utility Artifacts (7)
Archaeomancer's Map
36% of 11 decks +34% synergy
Expedition Map
36% of 11 decks +33% synergy
Navigation Orb
30% of 10 decks +29% synergy
Mirrorworks
27% of 11 decks +26% synergy
Krark-Clan Ironworks
27% of 11 decks +26% synergy
Thousand-Year Elixir
27% of 11 decks +25% synergy
Unwinding Clock
27% of 11 decks +24% synergy
Enchantments (2)
Mystic Remora
27% of 11 decks +18% synergy
Smothering Tithe
27% of 11 decks +15% synergy
Utility Lands (10)
Vault of Whispers
100% of 4 decks +98% synergy
Seat of the Synod
100% of 11 decks +97% synergy
Darksteel Citadel
64% of 11 decks +59% synergy
Oboro, Palace in the Clouds
45% of 11 decks +45% synergy
Treasure Vault
45% of 11 decks +43% synergy
Urza's Saga
45% of 11 decks +38% synergy
Academy Ruins
27% of 11 decks +25% synergy
Ghost Quarter
27% of 11 decks +24% synergy
Field of the Dead
27% of 11 decks +24% synergy
Inventors' Fair
27% of 11 decks +23% synergy
Mana Artifacts (6)
Arcane Signet
82% of 11 decks +11% synergy
Sol Ring
73% of 11 decks -12% synergy
Boros Signet
45% of 11 decks +40% synergy
Azorius Signet
45% of 11 decks +39% synergy
Izzet Signet
45% of 11 decks +39% synergy
Fellwar Stone
36% of 11 decks +15% synergy
Lands (21)
Blood Crypt
75% of 4 decks +66% synergy
Godless Shrine
75% of 4 decks +65% synergy
Watery Grave
75% of 4 decks +64% synergy
Rustvale Bridge
64% of 11 decks +62% synergy
Silverbluff Bridge
64% of 11 decks +62% synergy
Razortide Bridge
64% of 11 decks +62% synergy
Sacred Foundry
64% of 11 decks +55% synergy
Steam Vents
64% of 11 decks +55% synergy
Hallowed Fountain
64% of 11 decks +54% synergy
Flooded Strand
64% of 11 decks +53% synergy
Arid Mesa
64% of 11 decks +53% synergy
Scalding Tarn
64% of 11 decks +52% synergy
Command Tower
55% of 11 decks -18% synergy
Evolving Wilds
45% of 11 decks +24% synergy
Terramorphic Expanse
45% of 11 decks +29% synergy
Raugrin Triome
36% of 11 decks +33% synergy
Azorius Chancery
27% of 11 decks +24% synergy
Bloodstained Mire
27% of 11 decks +17% synergy
Polluted Delta
27% of 11 decks +16% synergy
Marsh Flats
27% of 11 decks +15% synergy
Myriad Landscape
27% of 11 decks +6% synergy