Prototype Portal + Retreat to Coralhelm + Ensoul Artifact + Darksteel Citadel

Prototype Portal
Retreat to Coralhelm
Ensoul Artifact
Darksteel Citadel
Requires
Prototype Portal must be on the battlefield. Retreat to Coralhelm must be on the battlefield. Ensoul Artifact must be on the battlefield. Darksteel Citadel must be in exile (exiled by Prototype Portal).
Steps
  1. Activate Prototype Portal by tapping it, creating a token copy of Darksteel Citadel.
  2. When the Darksteel Citadel token enters the battlefield, Retreat to Coralhelm triggers, untapping Prototype Portal.
  3. Repeat.
Results
Infinite colorless mana. Infinite Darksteel Citadel tokens. Infinite landfall triggers.
Top Commanders
Emry, Lurker of the Loch
0.04% of 4658 decks 2 decks
Tatyova, Benthic Druid
0.02% of 6656 decks 1 decks
Iron Man, Titan of Innovation
0.02% of 4826 decks 1 decks
Nin, the Pain Artist
0.11% of 940 decks 1 decks
Go-Shintai of Life's Origin
0.01% of 15908 decks 1 decks
Jin-Gitaxias
0.03% of 3392 decks 1 decks
Drafna, Founder of Lat-Nam
0.10% of 990 decks 1 decks
High Synergy Cards
Seat of the Synod
62% of 8 decks +56% synergy
Commander's Sphere
62% of 8 decks +48% synergy
Buried Ruin
50% of 8 decks +45% synergy
Mind Stone
50% of 8 decks +33% synergy
Reliquary Tower
62% of 8 decks +33% synergy
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Counterspell
75% of 8 decks +33% synergy
Game Changers
Vampiric Tutor
100% of 1 decks +83% synergy
Mana Vault
12% of 8 decks +6% synergy
Ancient Tomb
12% of 8 decks +2% synergy
Mystical Tutor
12% of 8 decks -2% synergy
Fierce Guardianship
12% of 8 decks -6% synergy
Creatures
Vrestin, Menoptra Leader
100% of 1 decks +100% synergy
Agent of Erebos
100% of 1 decks +100% synergy
Go-Shintai of Hidden Cruelty
100% of 1 decks +99% synergy
Go-Shintai of Shared Purpose
100% of 1 decks +99% synergy
Rhys the Redeemed
100% of 1 decks +97% synergy
Jukai Naturalist
100% of 1 decks +93% synergy
Enduring Vitality
100% of 1 decks +93% synergy
Sythis, Harvest's Hand
100% of 1 decks +93% synergy
Budoka Gardener
50% of 2 decks +50% synergy
Scaled Herbalist
50% of 2 decks +50% synergy
Jadzi, Oracle of Arcavios
50% of 2 decks +49% synergy
Nessian Wanderer
50% of 2 decks +49% synergy
Go-Shintai of Boundless Vigor
50% of 2 decks +49% synergy
Llanowar Scout
50% of 2 decks +49% synergy
Sporemound
50% of 2 decks +49% synergy
Risen Reef
50% of 2 decks +47% synergy
Farhaven Elf
50% of 2 decks +47% synergy
Courser of Kruphix
50% of 2 decks +46% synergy
Eidolon of Blossoms
50% of 2 decks +46% synergy
Tireless Tracker
50% of 2 decks +45% synergy
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Sanctum Weaver
50% of 2 decks +45% synergy
Coiling Oracle
50% of 2 decks +43% synergy
Rampaging Baloths
50% of 2 decks +43% synergy
Dryad of the Ilysian Grove
50% of 2 decks +42% synergy
Scute Swarm
50% of 2 decks +40% synergy
Reclamation Sage
50% of 2 decks +40% synergy
Sakura-Tribe Elder
50% of 2 decks +32% synergy
Llanowar Elves
50% of 2 decks +29% synergy
Archaeomancer
38% of 8 decks +34% synergy
Foundry Inspector
38% of 8 decks +33% synergy
Etherium Sculptor
38% of 8 decks +32% synergy
Solemn Simulacrum
38% of 8 decks +24% synergy
Donna Noble
33% of 3 decks +33% synergy
Toggo, Goblin Weaponsmith
33% of 3 decks +33% synergy
Go-Shintai of Ancient Wars
33% of 3 decks +33% synergy
Goblin Recruiter
33% of 3 decks +32% synergy
Herald of Kozilek
33% of 3 decks +32% synergy
Goblin Welder
33% of 3 decks +31% synergy
Niv-Mizzet, the Firemind
33% of 3 decks +30% synergy
Brash Taunter
33% of 3 decks +29% synergy
The Locust God
33% of 3 decks +29% synergy
Niv-Mizzet, Parun
33% of 3 decks +25% synergy
Mirran Spy
25% of 8 decks +25% synergy
Riddlesmith
25% of 8 decks +24% synergy
Shimmer Myr
25% of 8 decks +24% synergy
Scrap Trawler
25% of 8 decks +23% synergy
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Myr Battlesphere
25% of 8 decks +23% synergy
Psychosis Crawler
25% of 8 decks +22% synergy
Sai, Master Thopterist
25% of 8 decks +21% synergy
Laboratory Maniac
25% of 8 decks +21% synergy
Instants
Swords to Plowshares
100% of 1 decks +37% synergy
Reclaim
50% of 2 decks +49% synergy
Jaheira's Respite
50% of 2 decks +49% synergy
Roiling Regrowth
50% of 2 decks +47% synergy
Eureka Moment
50% of 2 decks +46% synergy
Entish Restoration
50% of 2 decks +43% synergy
Nature's Claim
50% of 2 decks +42% synergy
Harrow
50% of 2 decks +41% synergy
Crop Rotation
50% of 2 decks +40% synergy
Growth Spiral
50% of 2 decks +28% synergy
Ghostly Flicker
38% of 8 decks +33% synergy
Negate
38% of 8 decks +15% synergy
Comet Storm
33% of 3 decks +31% synergy
Chaos Warp
33% of 3 decks +2% synergy
Thirst for Knowledge
25% of 8 decks +23% synergy
Evacuation
25% of 8 decks +23% synergy
Blue Sun's Zenith
25% of 8 decks +23% synergy
Mystic Confluence
25% of 8 decks +22% synergy
Dispel
25% of 8 decks +21% synergy
Fact or Fiction
25% of 8 decks +19% synergy
Frantic Search
25% of 8 decks +12% synergy
Brainsurge
17% of 6 decks +14% synergy
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Three Steps Ahead
17% of 6 decks +14% synergy
Majestic Metamorphosis
12% of 8 decks +12% synergy
Behind the Mask
12% of 8 decks +12% synergy
Tidal Bore
12% of 8 decks +12% synergy
Moment of Truth
12% of 8 decks +12% synergy
Learn from the Past
12% of 8 decks +12% synergy
Reality Heist
12% of 8 decks +12% synergy
Echoing Truth
12% of 8 decks +12% synergy
Forbid
12% of 8 decks +12% synergy
Winds of Rebuke
12% of 8 decks +12% synergy
Masterful Replication
12% of 8 decks +12% synergy
Stoic Rebuttal
12% of 8 decks +12% synergy
Defabricate
12% of 8 decks +12% synergy
Into the Roil
12% of 8 decks +12% synergy
Foil
12% of 8 decks +12% synergy
Steady Progress
12% of 8 decks +12% synergy
Reject Imperfection
12% of 8 decks +12% synergy
Tale's End
12% of 8 decks +12% synergy
Serum Snare
12% of 8 decks +12% synergy
Flow of Knowledge
12% of 8 decks +11% synergy
Prologue to Phyresis
12% of 8 decks +11% synergy
Otherworldly Gaze
12% of 8 decks +11% synergy
Filter Out
12% of 8 decks +11% synergy
Saw It Coming
12% of 8 decks +11% synergy
Quick Study
12% of 8 decks +11% synergy
Impulse
12% of 8 decks +11% synergy
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Archmage's Charm
12% of 8 decks +11% synergy
Sublime Epiphany
12% of 8 decks +11% synergy
Sorceries
Gift of Estates
100% of 1 decks +99% synergy
Brilliant Restoration
100% of 1 decks +98% synergy
Farewell
100% of 1 decks +87% synergy
Journey of Discovery
50% of 2 decks +50% synergy
Abundant Harvest
50% of 2 decks +49% synergy
Edge of Autumn
50% of 2 decks +49% synergy
Broken Bond
50% of 2 decks +48% synergy
Circuitous Route
50% of 2 decks +48% synergy
Doppelgang
50% of 2 decks +47% synergy
Sylvan Scrying
50% of 2 decks +47% synergy
Search for Tomorrow
50% of 2 decks +47% synergy
Urban Evolution
50% of 2 decks +46% synergy
Harmonize
50% of 2 decks +42% synergy
Explore
50% of 2 decks +41% synergy
Rampant Growth
50% of 2 decks +16% synergy
Cultivate
50% of 2 decks +5% synergy
Fabricate
38% of 8 decks +32% synergy
Scrap Mastery
33% of 3 decks +33% synergy
Trash for Treasure
33% of 3 decks +32% synergy
Hell to Pay
33% of 3 decks +32% synergy
Chain Reaction
33% of 3 decks +29% synergy
Gamble
33% of 3 decks +24% synergy
Blasphemous Act
33% of 3 decks +0% synergy
Forging the Anchor
25% of 8 decks +25% synergy
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Rise and Shine
25% of 8 decks +24% synergy
Curse of the Swine
25% of 8 decks +21% synergy
Argivian Restoration
12% of 8 decks +12% synergy
Retraced Image
12% of 8 decks +12% synergy
Vivisurgeon's Insight
12% of 8 decks +12% synergy
Walk the Aeons
12% of 8 decks +12% synergy
Transmute Artifact
12% of 8 decks +11% synergy
Flood of Tears
12% of 8 decks +11% synergy
Time Stretch
12% of 8 decks +11% synergy
Contentious Plan
12% of 8 decks +11% synergy
Time Warp
12% of 8 decks +10% synergy
Finale of Revelation
12% of 8 decks +10% synergy
Rite of Replication
12% of 8 decks +9% synergy
Tezzeret's Gambit
12% of 8 decks +9% synergy
Thoughtcast
12% of 8 decks +9% synergy
Treasure Cruise
12% of 8 decks +7% synergy
Ponder
12% of 8 decks +0% synergy
Utility Artifacts
Trading Post
38% of 8 decks +36% synergy
Ichor Wellspring
38% of 8 decks +36% synergy
Lotus Petal
38% of 8 decks +31% synergy
Chromatic Star
25% of 8 decks +24% synergy
Codex Shredder
25% of 8 decks +24% synergy
Nevinyrral's Disk
25% of 8 decks +24% synergy
Mishra's Bauble
25% of 8 decks +24% synergy
Aether Spellbomb
25% of 8 decks +24% synergy
Elixir of Immortality
25% of 8 decks +24% synergy
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Hedron Archive
25% of 8 decks +22% synergy
Swiftfoot Boots
25% of 8 decks -2% synergy
Marina Vendrell's Grimoire
20% of 5 decks +19% synergy
Excalibur, Sword of Eden
17% of 6 decks +15% synergy
The Key to the Vault
17% of 6 decks +15% synergy
Rocket Launcher
12% of 8 decks +12% synergy
Shriekhorn
12% of 8 decks +12% synergy
Salvaging Station
12% of 8 decks +12% synergy
Spare Supplies
12% of 8 decks +12% synergy
Dark Sphere
12% of 8 decks +12% synergy
Alchemist's Vial
12% of 8 decks +12% synergy
Ransom Note
12% of 8 decks +12% synergy
Wedding Invitation
12% of 8 decks +12% synergy
Accorder's Shield
12% of 8 decks +12% synergy
Magistrate's Scepter
12% of 8 decks +12% synergy
Barrow-Blade
12% of 8 decks +12% synergy
Sword of the Meek
12% of 8 decks +12% synergy
Hero's Heirloom
12% of 8 decks +12% synergy
Nimblewright Schematic
12% of 8 decks +12% synergy
Transmogrifying Wand
12% of 8 decks +12% synergy
Servo Schematic
12% of 8 decks +12% synergy
Conjurer's Bauble
12% of 8 decks +12% synergy
Mnemonic Sphere
12% of 8 decks +12% synergy
Liquimetal Coating
12% of 8 decks +12% synergy
Urza's Bauble
12% of 8 decks +12% synergy
Gonti's Aether Heart
12% of 8 decks +12% synergy
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Lotus Bloom
12% of 8 decks +12% synergy
Welding Jar
12% of 8 decks +12% synergy
Blasting Station
12% of 8 decks +12% synergy
Grinding Station
12% of 8 decks +12% synergy
Winter Orb
12% of 8 decks +12% synergy
Mirrorworks
12% of 8 decks +12% synergy
Thornbite Staff
12% of 8 decks +12% synergy
Explorer's Scope
12% of 8 decks +12% synergy
Mycosynth Wellspring
12% of 8 decks +12% synergy
Bloodthirsty Blade
12% of 8 decks +12% synergy
Spine of Ish Sah
12% of 8 decks +12% synergy
Darksteel Monolith
12% of 8 decks +12% synergy
Helm of Awakening
12% of 8 decks +12% synergy
Clock of Omens
12% of 8 decks +12% synergy
Encroaching Mycosynth
12% of 8 decks +11% synergy
Enchantments
Honden of Night's Reach
100% of 1 decks +99% synergy
Sanctum of Tranquil Light
100% of 1 decks +99% synergy
Honden of Cleansing Fire
100% of 1 decks +99% synergy
Solitary Confinement
100% of 1 decks +99% synergy
Sanctum of Stone Fangs
100% of 1 decks +99% synergy
Sanctum of All
100% of 1 decks +95% synergy
Sterling Grove
100% of 1 decks +93% synergy
Anointed Procession
100% of 1 decks +92% synergy
Presence of Gond
50% of 2 decks +50% synergy
Honden of Life's Web
50% of 2 decks +49% synergy
Sanctum of Fruitful Harvest
50% of 2 decks +49% synergy
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Prismatic Omen
50% of 2 decks +49% synergy
Retreat to Kazandu
50% of 2 decks +48% synergy
Druid Class
50% of 2 decks +47% synergy
Primal Vigor
50% of 2 decks +47% synergy
Wilderness Reclamation
50% of 2 decks +46% synergy
Enchantress's Presence
50% of 2 decks +46% synergy
Parallel Lives
50% of 2 decks +43% synergy
Doubling Season
50% of 2 decks +40% synergy
Sanctum of Shattered Heights
33% of 3 decks +33% synergy
Honden of Infinite Rage
33% of 3 decks +33% synergy
Proft's Eidetic Memory
25% of 8 decks +23% synergy
Thopter Spy Network
25% of 8 decks +21% synergy
Sugar Coat
17% of 6 decks +16% synergy
Rising Waters
12% of 8 decks +12% synergy
Cast Through Time
12% of 8 decks +12% synergy
Zoetic Glyph
12% of 8 decks +12% synergy
March of the Machines
12% of 8 decks +12% synergy
Fool's Demise
12% of 8 decks +12% synergy
Clan Crafter
12% of 8 decks +12% synergy
Sanctum of Calm Waters
12% of 8 decks +12% synergy
Honden of Seeing Winds
12% of 8 decks +12% synergy
Secrets of the Dead
12% of 8 decks +12% synergy
Arcane Adaptation
12% of 8 decks +11% synergy
Paradox Haze
12% of 8 decks +11% synergy
Witness Protection
12% of 8 decks +11% synergy
Inexorable Tide
12% of 8 decks +10% synergy
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Training Grounds
12% of 8 decks +10% synergy
Mechanized Production
12% of 8 decks +10% synergy
Omniscience
12% of 8 decks +10% synergy
Imprisoned in the Moon
12% of 8 decks +9% synergy
Teferi's Ageless Insight
12% of 8 decks +7% synergy
Planeswalkers
Saheeli, the Gifted
33% of 3 decks +33% synergy
Daretti, Scrap Savant
33% of 3 decks +31% synergy
Will Kenrith
12% of 8 decks +12% synergy
Tezzeret, Artifice Master
12% of 8 decks +12% synergy
Karn, the Great Creator
12% of 8 decks +11% synergy
Tezzeret, Betrayer of Flesh
12% of 8 decks +11% synergy
Tezzeret the Seeker
12% of 8 decks +10% synergy
Utility Lands
Vault of Whispers
100% of 1 decks +96% synergy
Ancient Den
100% of 1 decks +95% synergy
Great Furnace
67% of 3 decks +61% synergy
Archway of Innovation
50% of 6 decks +47% synergy
Tranquil Thicket
50% of 2 decks +46% synergy
Alchemist's Refuge
50% of 2 decks +43% synergy
Mosswort Bridge
50% of 2 decks +39% synergy
Desert of the Fervent
33% of 3 decks +32% synergy
Desolate Lighthouse
33% of 3 decks +29% synergy
Forgotten Cave
33% of 3 decks +29% synergy
Treasure Vault
25% of 8 decks +23% synergy
Academy Ruins
25% of 8 decks +20% synergy
Mystic Sanctuary
25% of 8 decks +13% synergy
Rogue's Passage
25% of 8 decks +5% synergy
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Fountainport
17% of 6 decks +15% synergy
Magosi, the Waterveil
12% of 8 decks +12% synergy
Sequestered Stash
12% of 8 decks +12% synergy
Blighted Cataract
12% of 8 decks +12% synergy
Cryptic Caves
12% of 8 decks +12% synergy
Sanctum of Eternity
12% of 8 decks +12% synergy
Mirrorpool
12% of 8 decks +12% synergy
Mishra's Factory
12% of 8 decks +12% synergy
City of Traitors
12% of 8 decks +12% synergy
Crystal Vein
12% of 8 decks +12% synergy
Faerie Conclave
12% of 8 decks +12% synergy
Desert of the Mindful
12% of 8 decks +11% synergy
Radiant Fountain
12% of 8 decks +11% synergy
Cascading Cataracts
12% of 8 decks +11% synergy
Guildless Commons
12% of 8 decks +11% synergy
Riptide Laboratory
12% of 8 decks +10% synergy
Thespian's Stage
12% of 8 decks +10% synergy
Halimar Depths
12% of 8 decks +10% synergy
Lonely Sandbar
12% of 8 decks +9% synergy
Scavenger Grounds
12% of 8 decks +9% synergy
Inventors' Fair
12% of 8 decks +9% synergy
Karn's Bastion
12% of 8 decks +8% synergy
Urza's Saga
12% of 8 decks +6% synergy
Temple of the False God
12% of 8 decks +3% synergy
Otawara, Soaring City
12% of 8 decks -4% synergy
Mana Artifacts
Sol Ring
75% of 8 decks -9% synergy
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Simic Signet
50% of 2 decks +36% synergy
Thought Vessel
50% of 8 decks +33% synergy
Fellwar Stone
38% of 8 decks +17% synergy
Arcane Signet
38% of 8 decks -35% synergy
Izzet Signet
33% of 3 decks +6% synergy
Talisman of Creativity
33% of 3 decks +5% synergy
Mox Tantalite
25% of 8 decks +25% synergy
Coalition Relic
25% of 8 decks +24% synergy
Darksteel Ingot
25% of 8 decks +24% synergy
Prismatic Lens
25% of 8 decks +24% synergy
Replicating Ring
25% of 8 decks +24% synergy
Gilded Lotus
25% of 8 decks +22% synergy
Everflowing Chalice
25% of 8 decks +21% synergy
Decanter of Endless Water
25% of 8 decks +21% synergy
Thran Dynamo
25% of 8 decks +20% synergy
Chromatic Lantern
25% of 8 decks +16% synergy
Crystal Skull, Isu Spyglass
17% of 6 decks +15% synergy
Slagstone Refinery
12% of 8 decks +12% synergy
Mana Geode
12% of 8 decks +12% synergy
Skyclave Relic
12% of 8 decks +11% synergy
Astral Cornucopia
12% of 8 decks +11% synergy
Machine God's Effigy
12% of 8 decks +11% synergy
Worn Powerstone
12% of 8 decks +10% synergy
Basalt Monolith
12% of 8 decks +10% synergy
Liquimetal Torque
12% of 8 decks +9% synergy
Mox Opal
12% of 8 decks +8% synergy
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Midnight Clock
12% of 8 decks +7% synergy
Lands
Crystal Quarry
100% of 1 decks +96% synergy
Xander's Lounge
100% of 1 decks +74% synergy
Raugrin Triome
100% of 1 decks +74% synergy
Raffine's Tower
100% of 1 decks +74% synergy
Savai Triome
100% of 1 decks +74% synergy
Spara's Headquarters
100% of 1 decks +70% synergy
Zagoth Triome
100% of 1 decks +70% synergy
Ziatora's Proving Ground
100% of 1 decks +70% synergy
Indatha Triome
100% of 1 decks +70% synergy
Jetmir's Garden
100% of 1 decks +69% synergy
Ketria Triome
100% of 1 decks +68% synergy
Sacred Foundry
100% of 1 decks +65% synergy
Blood Crypt
100% of 1 decks +62% synergy
Temple Garden
100% of 1 decks +60% synergy
Hallowed Fountain
100% of 1 decks +60% synergy
Godless Shrine
100% of 1 decks +60% synergy
Watery Grave
100% of 1 decks +60% synergy
Stomping Ground
100% of 1 decks +60% synergy
Overgrown Tomb
100% of 1 decks +58% synergy
Steam Vents
67% of 3 decks +28% synergy
Overflowing Basin
50% of 2 decks +42% synergy
Temple of Mystery
50% of 2 decks +32% synergy
Simic Growth Chamber
50% of 2 decks +31% synergy
Breeding Pool
50% of 2 decks +10% synergy
Command Tower
50% of 8 decks -24% synergy
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Highland Lake
33% of 3 decks +32% synergy
Izzet Guildgate
33% of 3 decks +28% synergy
Silverbluff Bridge
33% of 3 decks +28% synergy
Cascade Bluffs
33% of 3 decks +21% synergy
Izzet Boilerworks
33% of 3 decks +17% synergy
Stormcarved Coast
33% of 3 decks +15% synergy
Temple of Epiphany
33% of 3 decks +15% synergy
Training Center
33% of 3 decks +7% synergy
Shivan Reef
33% of 3 decks +6% synergy
Sulfur Falls
33% of 3 decks +1% synergy
Scene of the Crime
25% of 8 decks +24% synergy
Forbidden Orchard
25% of 8 decks +22% synergy
Reflecting Pool
25% of 8 decks +20% synergy
Terramorphic Expanse
25% of 8 decks +9% synergy
Myriad Landscape
25% of 8 decks +6% synergy
Exotic Orchard
25% of 8 decks -11% synergy
Warped Landscape
12% of 8 decks +12% synergy
Glimmervoid
12% of 8 decks +12% synergy
Power Depot
12% of 8 decks +12% synergy
Gateway Plaza
12% of 8 decks +12% synergy
Brokers Hideout
12% of 8 decks +11% synergy
Riveteers Overlook
12% of 8 decks +11% synergy
Opal Palace
12% of 8 decks +10% synergy
Spire of Industry
12% of 8 decks +10% synergy
Ash Barrens
12% of 8 decks +8% synergy
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