Carth the Lion + Karn, the Great Creator + Ugin's Nexus + The Chain Veil + Krark-Clan Ironworks

Carth the Lion
Karn, the Great Creator
Ugin's Nexus
The Chain Veil
Krark-Clan Ironworks

Requires
Carth the Lion must be on the battlefield. Karn, the Great Creator must be on the battlefield. Ugin's Nexus must be on the battlefield. The Chain Veil must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Mana needed: 2 on your first turn
Steps
  1. Activate Krark-Clan Ironworks by exiling Ugin's Nexus, adding .
  2. Ugin's Nexus triggers, causing you to take an extra turn after this one.
  3. Activate Karn's first loyalty ability by putting two loyalty counters on it, causing any artifact to become an artifact creature until end of turn.
  4. Activate The Chain Veil by paying 4 and tapping it, allowing you to activate all planeswalker abilities an extra time this turn.
  5. Activate Karn's second loyalty ability by removing a loyalty counter from it, returning Ugin's Nexus from exile to your hand.
  6. Move to your next turn.
  7. Cast Ugin's Nexus by paying 5.
  8. Activate Krark-Clan Ironworks by exiling Ugin's Nexus, adding .
  9. Ugin's Nexus triggers, causing you to take an extra turn after this one.
  10. Activate Karn's second loyalty ability by removing a loyalty counter from it, returning Ugin's Nexus from exile to your hand.
  11. Move to your next turn.
  12. Cast Ugin's Nexus by paying 5.
  13. Repeat.
Results
Infinite turns.

Doran, the Siege Tower
0.02% of 5495 decks 1 decks
Carth the Lion
0.03% of 3353 decks 1 decks
Creatures
Angelic Protector
100% of 1 decks +100% synergy
Task Force
100% of 1 decks +100% synergy
Wakestone Gargoyle
100% of 1 decks +100% synergy
Avacyn, Guardian Angel
100% of 1 decks +100% synergy
Wall of Shards
100% of 1 decks +100% synergy
Kona, Rescue Beastie
100% of 1 decks +98% synergy
Overlord of the Balemurk
100% of 1 decks +98% synergy
Walking Ballista
100% of 2 decks +98% synergy
Enduring Vitality
100% of 1 decks +93% synergy
Wall of Spears
50% of 2 decks +50% synergy
Wall of Shields
50% of 2 decks +50% synergy
Wall of Wood
50% of 2 decks +50% synergy
Wall of Souls
50% of 2 decks +50% synergy
Steel Wall
50% of 2 decks +50% synergy
Ancestral Statue
50% of 2 decks +50% synergy
Wall of Junk
50% of 2 decks +50% synergy
Wall of Mulch
50% of 2 decks +50% synergy
Eternal Scourge
50% of 2 decks +50% synergy
Brood Monitor
50% of 2 decks +50% synergy
Stronghold Rats
50% of 2 decks +50% synergy
Wall of Tanglecord
50% of 2 decks +49% synergy
Tree of Redemption
50% of 2 decks +49% synergy
Woodland Bellower
50% of 2 decks +49% synergy
Belbe, Corrupted Observer
50% of 2 decks +49% synergy
Axebane Guardian
50% of 2 decks +49% synergy
Tree of Perdition
50% of 2 decks +49% synergy
Overgrown Battlement
50% of 2 decks +49% synergy
Reki, the History of Kamigawa
50% of 2 decks +49% synergy
Prowling Serpopard
50% of 2 decks +49% synergy
Cauldron Familiar
50% of 2 decks +49% synergy
Steel Overseer
50% of 2 decks +48% synergy
Genesis Hydra
50% of 2 decks +48% synergy
Quirion Ranger
50% of 2 decks +48% synergy
Poison Dart Frog
50% of 2 decks +48% synergy
Verdant Sun's Avatar
50% of 2 decks +48% synergy
Mikaeus, the Unhallowed
50% of 2 decks +47% synergy
Ashaya, Soul of the Wild
50% of 2 decks +47% synergy
Academy Manufactor
50% of 2 decks +46% synergy
Evolution Sage
50% of 2 decks +43% synergy
Avenger of Zendikar
50% of 2 decks +41% synergy
Elves of Deep Shadow
50% of 2 decks +40% synergy
Solemn Simulacrum
50% of 2 decks +36% synergy
Eternal Witness
50% of 2 decks +30% synergy
Instants
Solidarity
100% of 1 decks +100% synergy
Withering Torment
100% of 1 decks +92% synergy
Tower Defense
50% of 2 decks +49% synergy
Atomize
50% of 2 decks +46% synergy
Crop Rotation
50% of 2 decks +40% synergy
Dark Ritual
50% of 2 decks +27% synergy
Sorceries
Slaughter the Strong
100% of 1 decks +99% synergy
Blasphemous Edict
100% of 1 decks +92% synergy
Harmonize
100% of 2 decks +91% synergy
Planewide Celebration
50% of 2 decks +49% synergy
Expand the Sphere
50% of 2 decks +49% synergy
Deadly Brew
50% of 2 decks +49% synergy
Soul's Majesty
50% of 2 decks +48% synergy
Traverse the Outlands
50% of 2 decks +47% synergy
Unearth
50% of 2 decks +47% synergy
Rishkar's Expertise
50% of 2 decks +40% synergy
Kodama's Reach
50% of 2 decks +19% synergy
Cultivate
50% of 2 decks +5% synergy
Utility Artifacts
Sylvok Lifestaff
50% of 2 decks +50% synergy
Orochi Hatchery
50% of 2 decks +50% synergy
Ensnaring Bridge
50% of 2 decks +50% synergy
Staff of Nin
50% of 2 decks +50% synergy
Throne of Geth
50% of 2 decks +49% synergy
Meekstone
50% of 2 decks +49% synergy
Nim Deathmantle
50% of 2 decks +49% synergy
God-Pharaoh's Statue
50% of 2 decks +49% synergy
Thornbite Staff
50% of 2 decks +49% synergy
Dowsing Dagger
50% of 2 decks +49% synergy
Bow of Nylea
50% of 2 decks +48% synergy
Thousand-Year Elixir
50% of 2 decks +48% synergy
Lifecrafter's Bestiary
50% of 2 decks +46% synergy
Phyrexian Altar
50% of 2 decks +46% synergy
Ashnod's Altar
50% of 2 decks +43% synergy
The Great Henge
50% of 2 decks +40% synergy
Mind Stone
50% of 2 decks +33% synergy
Lightning Greaves
50% of 2 decks +25% synergy
Swiftfoot Boots
50% of 2 decks +22% synergy
Enchantments
Behind the Scenes
100% of 1 decks +99% synergy
Brave the Sands
100% of 1 decks +98% synergy
Presence of Gond
50% of 2 decks +50% synergy
Oath of Nissa
50% of 2 decks +49% synergy
Ulvenwald Mysteries
50% of 2 decks +49% synergy
Canopy Cover
50% of 2 decks +49% synergy
Assault Formation
50% of 2 decks +49% synergy
Cunning Rhetoric
50% of 2 decks +49% synergy
Food Chain
50% of 2 decks +48% synergy
The Eldest Reborn
50% of 2 decks +48% synergy
Kaya's Ghostform
50% of 2 decks +46% synergy
Innkeeper's Talent
50% of 2 decks +45% synergy
Elemental Bond
50% of 2 decks +45% synergy
Guardian Project
50% of 2 decks +42% synergy
Planeswalkers
Garruk Wildspeaker
100% of 2 decks +99% synergy
Garruk, Primal Hunter
100% of 2 decks +97% synergy
Liliana, the Necromancer
50% of 2 decks +50% synergy
Nissa, Genesis Mage
50% of 2 decks +50% synergy
Ob Nixilis of the Black Oath
50% of 2 decks +50% synergy
Garruk, Caller of Beasts
50% of 2 decks +50% synergy
Garruk, Apex Predator
50% of 2 decks +49% synergy
Vivien Reid
50% of 2 decks +49% synergy
Ob Nixilis Reignited
50% of 2 decks +49% synergy
Nissa, Voice of Zendikar
50% of 2 decks +49% synergy
Nissa, Vital Force
50% of 2 decks +49% synergy
Vraska, Relic Seeker
50% of 2 decks +49% synergy
Tevesh Szat, Doom of Fools
50% of 2 decks +49% synergy
Vraska the Unseen
50% of 2 decks +49% synergy
Ugin, the Ineffable
50% of 2 decks +48% synergy
Wrenn and Realmbreaker
50% of 2 decks +48% synergy
Garruk, Cursed Huntsman
50% of 2 decks +48% synergy
Vraska, Golgari Queen
50% of 2 decks +47% synergy
Nissa, Who Shakes the World
50% of 2 decks +47% synergy
Vraska, Betrayal's Sting
50% of 2 decks +47% synergy
Liliana, Dreadhorde General
50% of 2 decks +46% synergy
Utility Lands
Stirring Wildwood
100% of 1 decks +99% synergy
Temple of the False God
100% of 2 decks +90% synergy
Winding Canyons
50% of 2 decks +50% synergy
Havenwood Battleground
50% of 2 decks +50% synergy
Deserted Temple
50% of 2 decks +49% synergy
Great Hall of the Citadel
50% of 2 decks +49% synergy
Llanowar Reborn
50% of 2 decks +48% synergy
Westvale Abbey
50% of 2 decks +48% synergy
Strip Mine
50% of 2 decks +47% synergy
Tranquil Thicket
50% of 2 decks +46% synergy
Command Beacon
50% of 2 decks +46% synergy
Oran-Rief, the Vastwood
50% of 2 decks +45% synergy
Karn's Bastion
50% of 2 decks +45% synergy
Castle Garenbrig
50% of 2 decks +45% synergy
Shifting Woodland
50% of 2 decks +43% synergy
Yavimaya, Cradle of Growth
50% of 2 decks +41% synergy
Takenuma, Abandoned Mire
50% of 2 decks +40% synergy
Mosswort Bridge
50% of 2 decks +40% synergy
Rogue's Passage
50% of 2 decks +30% synergy
Reliquary Tower
50% of 2 decks +20% synergy
Bojuka Bog
50% of 2 decks +20% synergy
Mana Artifacts
Sol Ring
100% of 2 decks +16% synergy
Honor-Worn Shaku
50% of 2 decks +49% synergy
Golgari Signet
50% of 2 decks +38% synergy
Arcane Signet
50% of 2 decks -22% synergy
Lands
Scattered Groves
100% of 1 decks +91% synergy
Temple of Malady
100% of 2 decks +84% synergy
Temple of Silence
100% of 1 decks +82% synergy
Canopy Vista
100% of 1 decks +63% synergy
Temple Garden
100% of 1 decks +60% synergy
Overgrown Tomb
100% of 2 decks +58% synergy
Command Tower
100% of 2 decks +26% synergy
Opal Palace
50% of 2 decks +47% synergy
Woodland Chasm
50% of 2 decks +46% synergy
Unclaimed Territory
50% of 2 decks +45% synergy
Haunted Mire
50% of 2 decks +43% synergy
Windswept Heath
50% of 2 decks +39% synergy
Twilight Mire
50% of 2 decks +39% synergy
Verdant Catacombs
50% of 2 decks +39% synergy
Necroblossom Snarl
50% of 2 decks +38% synergy
Underground Mortuary
50% of 2 decks +37% synergy
Deathcap Glade
50% of 2 decks +36% synergy
Tainted Wood
50% of 2 decks +36% synergy
Golgari Rot Farm
50% of 2 decks +32% synergy
Undergrowth Stadium
50% of 2 decks +24% synergy
Llanowar Wastes
50% of 2 decks +24% synergy
Woodland Cemetery
50% of 2 decks +21% synergy
Exotic Orchard
50% of 2 decks +14% synergy