Prototype Portal + Ugin's Nexus + Megatog

Prototype Portal
Ugin's Nexus
Megatog

Requires
Prototype Portal must be on the battlefield. Ugin's Nexus must be in exile (exiled by Prototype Portal). Megatog must be on the battlefield. Mana needed: 5 each turn
Steps
  1. Activate Prototype Portal by paying 5 and tapping it, creating a token copy of Ugin's Nexus.
  2. Activate Megatog by sacrificing the Ugin's Nexus token.
  3. The Ugin's Nexus token is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
  4. Resolve the Megatog ability, giving it +3/+3 until end of turn.
  5. Repeat each turn.
Results
Infinite turns.

Breya, Etherium Shaper
0.01% of 13853 decks 1 decks
Jan Jansen, Chaos Crafter
0.02% of 4391 decks 1 decks
Golos, Tireless Pilgrim
0.13% of 784 decks 1 decks
New Cards
Marvin, Murderous Mimic
100% of 1 decks +95% synergy
Creatures
Sharding Sphinx
100% of 2 decks +99% synergy
Urza, Chief Artificer
100% of 2 decks +98% synergy
Hazel's Brewmaster
100% of 1 decks +95% synergy
Marionette Apprentice
100% of 2 decks +92% synergy
Junk Diver
67% of 3 decks +66% synergy
Kuldotha Forgemaster
67% of 3 decks +66% synergy
Myr Retriever
67% of 3 decks +65% synergy
Ingenious Artillerist
67% of 3 decks +64% synergy
Ornithopter of Paradise
67% of 3 decks +62% synergy
Reckless Fireweaver
67% of 3 decks +62% synergy
Skill Borrower
50% of 2 decks +50% synergy
Broodstar
50% of 2 decks +50% synergy
Magus of the Future
50% of 2 decks +50% synergy
Tawnos, Urza's Apprentice
50% of 2 decks +50% synergy
Filigree Angel
50% of 2 decks +50% synergy
Filigree Attendant
50% of 2 decks +50% synergy
Sydri, Galvanic Genius
50% of 2 decks +50% synergy
Nick Valentine, Private Eye
50% of 2 decks +50% synergy
Breya, Etherium Shaper
50% of 2 decks +50% synergy
Arcum Dagsson
50% of 2 decks +49% synergy
Fatespinner
50% of 2 decks +49% synergy
Braids, Conjurer Adept
50% of 2 decks +49% synergy
Grand Architect
50% of 2 decks +49% synergy
Jhoira, Ageless Innovator
50% of 2 decks +49% synergy
Drafna, Founder of Lat-Nam
50% of 2 decks +49% synergy
Research Thief
50% of 2 decks +49% synergy
Teferi, Mage of Zhalfir
50% of 2 decks +49% synergy
Malcator, Purity Overseer
50% of 2 decks +49% synergy
Vedalken Archmage
50% of 2 decks +49% synergy
Satya, Aetherflux Genius
50% of 2 decks +48% synergy
Master Transmuter
50% of 2 decks +48% synergy
Master of Etherium
50% of 2 decks +48% synergy
Kami of the Crescent Moon
50% of 2 decks +48% synergy
Sharuum the Hegemon
50% of 2 decks +48% synergy
Kappa Cannoneer
50% of 2 decks +48% synergy
Hanna, Ship's Navigator
50% of 2 decks +48% synergy
Shimmer Dragon
50% of 2 decks +48% synergy
Saheeli, the Sun's Brilliance
50% of 2 decks +48% synergy
Ethersworn Adjudicator
50% of 2 decks +48% synergy
Thought Monitor
50% of 2 decks +47% synergy
Sai, Master Thopterist
50% of 2 decks +46% synergy
Brudiclad, Telchor Engineer
50% of 2 decks +46% synergy
Gold-Forged Thopteryx
50% of 2 decks +46% synergy
Enthusiastic Mechanaut
50% of 2 decks +46% synergy
Emry, Lurker of the Loch
50% of 2 decks +46% synergy
Cayth, Famed Mechanist
50% of 2 decks +45% synergy
Etherium Sculptor
50% of 2 decks +44% synergy
Jhoira, Weatherlight Captain
50% of 2 decks +44% synergy
Baleful Strix
50% of 2 decks +37% synergy
Nim Devourer
33% of 3 decks +33% synergy
Instants
Access Denied
50% of 2 decks +49% synergy
Void Rend
50% of 2 decks +35% synergy
Deadly Dispute
33% of 3 decks +22% synergy
Enlightened Tutor
33% of 3 decks +16% synergy
Vampiric Tutor
33% of 3 decks +15% synergy
Sorceries
Argivian Restoration
50% of 2 decks +50% synergy
Roar of Reclamation
33% of 3 decks +33% synergy
Soulscour
33% of 3 decks +33% synergy
Cruel Tutor
33% of 3 decks +33% synergy
Beseech the Queen
33% of 3 decks +32% synergy
Trash for Treasure
33% of 3 decks +32% synergy
Organic Extinction
33% of 3 decks +31% synergy
Profane Tutor
33% of 3 decks +30% synergy
Beseech the Mirror
33% of 3 decks +29% synergy
Grim Tutor
33% of 3 decks +29% synergy
Diabolic Tutor
33% of 3 decks +27% synergy
Sevinne's Reclamation
33% of 3 decks +26% synergy
Demonic Tutor
33% of 3 decks +11% synergy
Utility Artifacts
Bootleggers' Stash
100% of 1 decks +98% synergy
Liquimetal Coating
67% of 3 decks +66% synergy
Mycosynth Lattice
67% of 3 decks +66% synergy
Clock of Omens
67% of 3 decks +66% synergy
Krark-Clan Ironworks
67% of 3 decks +66% synergy
Thousand-Year Elixir
67% of 3 decks +64% synergy
Assimilation Aegis
50% of 2 decks +49% synergy
Thopter Foundry
50% of 2 decks +48% synergy
Power Matrix
33% of 3 decks +33% synergy
Myr Matrix
33% of 3 decks +33% synergy
Magistrate's Scepter
33% of 3 decks +33% synergy
Myr Turbine
33% of 3 decks +33% synergy
Spawning Pit
33% of 3 decks +33% synergy
Doubling Cube
33% of 3 decks +33% synergy
Blasting Station
33% of 3 decks +33% synergy
Grinding Station
33% of 3 decks +33% synergy
Prized Statue
33% of 3 decks +33% synergy
Transmutation Font
33% of 3 decks +33% synergy
Genesis Chamber
33% of 3 decks +33% synergy
Mirrorworks
33% of 3 decks +33% synergy
Mycosynth Wellspring
33% of 3 decks +33% synergy
Aether Refinery
33% of 3 decks +32% synergy
Automated Assembly Line
33% of 3 decks +32% synergy
Trading Post
33% of 3 decks +32% synergy
Illusionist's Bracers
33% of 3 decks +32% synergy
Darksteel Forge
33% of 3 decks +32% synergy
Elixir of Immortality
33% of 3 decks +32% synergy
Ichor Wellspring
33% of 3 decks +32% synergy
Nettlecyst
33% of 3 decks +32% synergy
Oni-Cult Anvil
33% of 3 decks +31% synergy
Sculpting Steel
33% of 3 decks +31% synergy
Vat of Rebirth
33% of 3 decks +31% synergy
Isochron Scepter
33% of 3 decks +31% synergy
Unwinding Clock
33% of 3 decks +31% synergy
The One Ring
33% of 3 decks +24% synergy
Enchantments
Mana Reflection
100% of 1 decks +98% synergy
Growing Ranks
100% of 1 decks +98% synergy
Alchemist's Talent
100% of 1 decks +96% synergy
Aura Shards
100% of 1 decks +91% synergy
Faces of the Past
50% of 2 decks +50% synergy
Thopter Spy Network
50% of 2 decks +46% synergy
Leyline of Anticipation
50% of 2 decks +45% synergy
Consulate Crackdown
33% of 3 decks +33% synergy
Biotransference
33% of 3 decks +32% synergy
Agent of the Iron Throne
33% of 3 decks +31% synergy
Revel in Riches
33% of 3 decks +30% synergy
Anointed Procession
33% of 3 decks +24% synergy
Smothering Tithe
33% of 3 decks +8% synergy
Planeswalkers
Daretti, Scrap Savant
33% of 3 decks +31% synergy
Utility Lands
Tree of Tales
100% of 1 decks +98% synergy
Darksteel Citadel
67% of 3 decks +63% synergy
Vault of Whispers
67% of 3 decks +62% synergy
Buried Ruin
67% of 3 decks +61% synergy
Ancient Den
67% of 3 decks +61% synergy
Great Furnace
67% of 3 decks +61% synergy
Academy Ruins
50% of 2 decks +45% synergy
Seat of the Synod
50% of 2 decks +44% synergy
Blasted Landscape
33% of 3 decks +33% synergy
Cascading Cataracts
33% of 3 decks +32% synergy
Inventors' Fair
33% of 3 decks +29% synergy
Mana Artifacts
Arcane Signet
100% of 3 decks +28% synergy
Sol Ring
67% of 3 decks -18% synergy
Blinkmoth Urn
33% of 3 decks +33% synergy
Patriar's Seal
33% of 3 decks +31% synergy
Gilded Lotus
33% of 3 decks +30% synergy
Liquimetal Torque
33% of 3 decks +30% synergy
Lotus Petal
33% of 3 decks +27% synergy
Chromatic Lantern
33% of 3 decks +24% synergy
Commander's Sphere
33% of 3 decks +18% synergy
Boros Signet
33% of 3 decks +10% synergy
Orzhov Signet
33% of 3 decks +6% synergy
Rakdos Signet
33% of 3 decks +4% synergy
Lands
Botanical Sanctum
100% of 1 decks +96% synergy
Blooming Marsh
100% of 1 decks +96% synergy
Flooded Grove
100% of 1 decks +88% synergy
Contaminated Landscape
100% of 1 decks +87% synergy
Deathcap Glade
100% of 1 decks +86% synergy
Hedge Maze
100% of 1 decks +86% synergy
Seething Landscape
100% of 1 decks +84% synergy
Sunpetal Grove
100% of 1 decks +77% synergy
Bountiful Promenade
100% of 1 decks +76% synergy
Hinterland Harbor
100% of 1 decks +73% synergy
Prairie Stream
100% of 2 decks +66% synergy
Breeding Pool
100% of 1 decks +59% synergy
Command Tower
100% of 3 decks +26% synergy
Dragonskull Summit
67% of 3 decks +36% synergy
Thriving Isle
50% of 2 decks +47% synergy
Mystic Gate
50% of 2 decks +44% synergy
Silverbluff Bridge
50% of 2 decks +44% synergy
Cascade Bluffs
50% of 2 decks +38% synergy
Skycloud Expanse
50% of 2 decks +37% synergy
Shattered Landscape
50% of 2 decks +37% synergy
Darkwater Catacombs
50% of 2 decks +35% synergy
Glacial Fortress
50% of 2 decks +25% synergy
Drowned Catacomb
50% of 2 decks +25% synergy
Hallowed Fountain
50% of 2 decks +9% synergy
Glimmervoid
33% of 3 decks +33% synergy
Grixis Panorama
33% of 3 decks +33% synergy
Thriving Bluff
33% of 3 decks +31% synergy
The Mycosynth Gardens
33% of 3 decks +31% synergy
Thriving Heath
33% of 3 decks +31% synergy
Spire of Industry
33% of 3 decks +30% synergy
Drossforge Bridge
33% of 3 decks +29% synergy
Secluded Courtyard
33% of 3 decks +29% synergy
Ash Barrens
33% of 3 decks +29% synergy
Goldmire Bridge
33% of 3 decks +28% synergy
Rustvale Bridge
33% of 3 decks +28% synergy
Concealed Courtyard
33% of 3 decks +28% synergy
Plateau
33% of 3 decks +21% synergy
Shattered Sanctum
33% of 3 decks +20% synergy
Badlands
33% of 3 decks +20% synergy
Scrubland
33% of 3 decks +20% synergy
Temple of Malice
33% of 3 decks +19% synergy
Boros Garrison
33% of 3 decks +18% synergy
Haunted Ridge
33% of 3 decks +17% synergy
Temple of Silence
33% of 3 decks +15% synergy
Path of Ancestry
33% of 3 decks +12% synergy
Savai Triome
33% of 3 decks +6% synergy
Isolated Chapel
33% of 3 decks +6% synergy
Nomad Outpost
33% of 3 decks +6% synergy
Clifftop Retreat
33% of 3 decks +5% synergy
Exotic Orchard
33% of 3 decks -2% synergy