Prototype Portal + Retreat to Coralhelm + Ensoul Artifact + Seat of the Synod

Prototype Portal
Retreat to Coralhelm
Ensoul Artifact
Seat of the Synod

Requires
Prototype Portal must be on the battlefield. Retreat to Coralhelm must be on the battlefield. Ensoul Artifact must be on the battlefield. Seat of the Synod must be in exile (exiled by Prototype Portal). Ensoul Artifact attached to Prototype Portal. Prototype Portal does not have summoning sickness.
Steps
  1. Activate Prototype Portal by tapping it, creating a token copy of Seat of the Synod.
  2. When the Seat of the Synod token enters the battlefield, Retreat to Coralhelm triggers, untapping Prototype Portal.
  3. Repeat.
Results
Infinite blue mana. Infinite landfall triggers. Infinite Seat of the Synod tokens.

Fblthp, the Lost
0.14% of 698 decks 1 decks
Nin, the Pain Artist
0.12% of 841 decks 1 decks
Creatures
Donna Noble
100% of 1 decks +100% synergy
Toggo, Goblin Weaponsmith
100% of 1 decks +99% synergy
Niv-Mizzet, the Firemind
100% of 1 decks +96% synergy
Brash Taunter
100% of 1 decks +96% synergy
The Locust God
100% of 1 decks +95% synergy
Niv-Mizzet, Parun
100% of 1 decks +92% synergy
Sphinx of Magosi
50% of 2 decks +50% synergy
Dross Scorpion
50% of 2 decks +50% synergy
Augur of Bolas
50% of 2 decks +50% synergy
Darksteel Myr
50% of 2 decks +50% synergy
Sphinx of Uthuun
50% of 2 decks +50% synergy
Kefnet the Mindful
50% of 2 decks +50% synergy
Omen Hawker
50% of 2 decks +49% synergy
Gadwick, the Wizened
50% of 2 decks +49% synergy
Azami, Lady of Scrolls
50% of 2 decks +49% synergy
Stuffy Doll
50% of 2 decks +49% synergy
Tidespout Tyrant
50% of 2 decks +49% synergy
Body of Knowledge
50% of 2 decks +49% synergy
Thassa, God of the Sea
50% of 2 decks +48% synergy
Venser, Shaper Savant
50% of 2 decks +48% synergy
Triskaidekaphile
50% of 2 decks +47% synergy
Psychosis Crawler
50% of 2 decks +47% synergy
Baral, Chief of Compliance
50% of 2 decks +47% synergy
Archaeomancer
50% of 2 decks +46% synergy
Chasm Skulker
50% of 2 decks +46% synergy
Laboratory Maniac
50% of 2 decks +45% synergy
Talrand, Sky Summoner
50% of 2 decks +45% synergy
Instants
Blue Sun's Zenith
100% of 2 decks +97% synergy
Comet Storm
100% of 1 decks +97% synergy
Chaos Warp
100% of 1 decks +68% synergy
Counterspell
100% of 2 decks +57% synergy
Machine Over Matter
50% of 2 decks +50% synergy
Hurl into History
50% of 2 decks +50% synergy
Reality Heist
50% of 2 decks +50% synergy
Into the Roil
50% of 2 decks +49% synergy
Cyber Conversion
50% of 2 decks +48% synergy
Evacuation
50% of 2 decks +48% synergy
Mystic Confluence
50% of 2 decks +47% synergy
Whir of Invention
50% of 2 decks +47% synergy
Ghostly Flicker
50% of 2 decks +45% synergy
Aetherize
50% of 2 decks +45% synergy
Fact or Fiction
50% of 2 decks +43% synergy
Pongify
50% of 2 decks +38% synergy
Frantic Search
50% of 2 decks +38% synergy
Arcane Denial
50% of 2 decks +30% synergy
Sorceries
Hell to Pay
100% of 1 decks +98% synergy
Chain Reaction
100% of 1 decks +95% synergy
Fabricate
100% of 2 decks +94% synergy
Blasphemous Act
100% of 1 decks +66% synergy
Involuntary Cooldown
50% of 2 decks +50% synergy
Reconstruction
50% of 2 decks +50% synergy
Impede Momentum
50% of 2 decks +50% synergy
Scour All Possibilities
50% of 2 decks +50% synergy
Ugin's Insight
50% of 2 decks +50% synergy
Walk the Aeons
50% of 2 decks +49% synergy
Enter the Infinite
50% of 2 decks +49% synergy
Reshape
50% of 2 decks +48% synergy
Thoughtcast
50% of 2 decks +47% synergy
Preordain
50% of 2 decks +39% synergy
Utility Artifacts
Sands of Time
50% of 2 decks +50% synergy
Shriekhorn
50% of 2 decks +50% synergy
Salvaging Station
50% of 2 decks +50% synergy
Summoning Station
50% of 2 decks +50% synergy
Retrofitter Foundry
50% of 2 decks +50% synergy
Crystal Ball
50% of 2 decks +50% synergy
Proteus Staff
50% of 2 decks +50% synergy
The Millennium Calendar
50% of 2 decks +49% synergy
Mycosynth Lattice
50% of 2 decks +49% synergy
Voltaic Key
50% of 2 decks +49% synergy
The Enigma Jewel
50% of 2 decks +49% synergy
Crystal Shard
50% of 2 decks +49% synergy
Clock of Omens
50% of 2 decks +49% synergy
Trading Post
50% of 2 decks +49% synergy
Nevinyrral's Disk
50% of 2 decks +49% synergy
Encroaching Mycosynth
50% of 2 decks +49% synergy
Moonsilver Key
50% of 2 decks +49% synergy
Lithoform Engine
50% of 2 decks +48% synergy
Manifold Key
50% of 2 decks +48% synergy
Mirage Mirror
50% of 2 decks +48% synergy
Elixir of Immortality
50% of 2 decks +48% synergy
Forsaken Monument
50% of 2 decks +48% synergy
Cloud Key
50% of 2 decks +48% synergy
Mindsplice Apparatus
50% of 2 decks +48% synergy
Sword of the Animist
50% of 2 decks +45% synergy
Swiftfoot Boots
50% of 2 decks +22% synergy
Enchantments
Shameless Charlatan
50% of 2 decks +50% synergy
Cast Through Time
50% of 2 decks +50% synergy
March of the Machines
50% of 2 decks +50% synergy
Ever-Watching Threshold
50% of 2 decks +50% synergy
Sphinx's Tutelage
50% of 2 decks +49% synergy
Artificer Class
50% of 2 decks +49% synergy
Efficient Construction
50% of 2 decks +49% synergy
Psychic Corrosion
50% of 2 decks +48% synergy
Mirrodin Besieged
50% of 2 decks +48% synergy
Court of Vantress
50% of 2 decks +48% synergy
Proft's Eidetic Memory
50% of 2 decks +48% synergy
Struggle for Project Purity
50% of 2 decks +47% synergy
Ominous Seas
50% of 2 decks +47% synergy
Thopter Spy Network
50% of 2 decks +46% synergy
Teferi's Ageless Insight
50% of 2 decks +45% synergy
Propaganda
50% of 2 decks +38% synergy
Planeswalkers
Will Kenrith
50% of 2 decks +50% synergy
Jace, Wielder of Mysteries
50% of 2 decks +46% synergy
Utility Lands
Desert of the Fervent
100% of 1 decks +99% synergy
Desolate Lighthouse
100% of 1 decks +96% synergy
Forgotten Cave
100% of 1 decks +95% synergy
Buried Ruin
100% of 2 decks +95% synergy
Great Furnace
100% of 1 decks +94% synergy
Reliquary Tower
100% of 2 decks +71% synergy
Blighted Cataract
50% of 2 decks +50% synergy
Cryptic Caves
50% of 2 decks +49% synergy
Sanctum of Eternity
50% of 2 decks +49% synergy
Mirrorpool
50% of 2 decks +49% synergy
Mishra's Factory
50% of 2 decks +49% synergy
Desert of the Mindful
50% of 2 decks +49% synergy
Faerie Conclave
50% of 2 decks +49% synergy
Radiant Fountain
50% of 2 decks +49% synergy
Riptide Laboratory
50% of 2 decks +48% synergy
Treasure Vault
50% of 2 decks +47% synergy
Halimar Depths
50% of 2 decks +47% synergy
Lonely Sandbar
50% of 2 decks +47% synergy
Darksteel Citadel
50% of 2 decks +46% synergy
Otawara, Soaring City
50% of 2 decks +33% synergy
Mana Artifacts
Decanter of Endless Water
100% of 2 decks +95% synergy
Thought Vessel
100% of 2 decks +83% synergy
Sol Ring
100% of 2 decks +16% synergy
Mana Geode
50% of 2 decks +50% synergy
Darksteel Ingot
50% of 2 decks +49% synergy
Thran Dynamo
50% of 2 decks +45% synergy
Commander's Sphere
50% of 2 decks +35% synergy
Mind Stone
50% of 2 decks +33% synergy
Lands
Highland Lake
100% of 1 decks +98% synergy
Izzet Guildgate
100% of 1 decks +95% synergy
Izzet Boilerworks
100% of 1 decks +84% synergy
Temple of Epiphany
100% of 1 decks +82% synergy
Warped Landscape
50% of 2 decks +50% synergy
Ash Barrens
50% of 2 decks +45% synergy
Reflecting Pool
50% of 2 decks +45% synergy
Terramorphic Expanse
50% of 2 decks +34% synergy
Myriad Landscape
50% of 2 decks +30% synergy
Command Tower
50% of 2 decks -24% synergy