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

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

Requires
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. Doubling Season must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Mana needed: 2 on the first turn, with 7 available each subsequent turn
Steps
  1. Activate Krark-Clan Ironworks by sacrificing Ugin's Nexus, adding .
  2. Ugin's Nexus is exiled instead of being put into your graveyard, and causes you to take an extra turn after this one.
  3. Activate The Chain Veil by paying 4 and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn.
  4. 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.
  5. Activate Karn's second loyalty ability by removing two loyalty counters from it, revealing Ugin's Nexus from exile and putting it into your hand.
  6. Move to your next turn.
  7. Cast Ugin's Nexus by paying 5.
  8. Repeat.
Results
Infinite turns.

Goreclaw, Terror of Qal Sisma
0.03% of 3989 decks 1 decks
Creatures
Silvanus's Invoker
100% of 1 decks +99% synergy
Decimator of the Provinces
100% of 1 decks +99% synergy
Ornithopter
100% of 1 decks +99% synergy
Whisperer of the Wilds
100% of 1 decks +96% synergy
Pathbreaker Ibex
100% of 1 decks +96% synergy
Primordial Sage
100% of 1 decks +95% synergy
Garruk's Packleader
100% of 1 decks +93% synergy
Thunderfoot Baloth
100% of 1 decks +93% synergy
Boreal Druid
100% of 1 decks +92% synergy
Soul of the Harvest
100% of 1 decks +87% synergy
Ashaya, Soul of the Wild
100% of 1 decks +84% synergy
Kogla, the Titan Ape
100% of 1 decks +84% synergy
Rampaging Baloths
100% of 1 decks +83% synergy
Birds of Paradise
100% of 1 decks +83% synergy
Surrak and Goreclaw
100% of 1 decks +83% synergy
Craterhoof Behemoth
100% of 1 decks +82% synergy
Arbor Elf
100% of 1 decks +71% synergy
Beast Whisperer
100% of 1 decks +61% synergy
Fyndhorn Elves
100% of 1 decks +60% synergy
Elvish Mystic
100% of 1 decks +50% synergy
Llanowar Elves
100% of 1 decks +45% synergy
Instants
Sprout Swarm
100% of 1 decks +99% synergy
Momentous Fall
100% of 1 decks +90% synergy
Chord of Calling
100% of 1 decks +88% synergy
Return of the Wildspeaker
100% of 1 decks +59% synergy
Sorceries
Ranger's Path
100% of 1 decks +98% synergy
Boundless Realms
100% of 1 decks +97% synergy
Tempt with Discovery
100% of 1 decks +97% synergy
Explosive Vegetation
100% of 1 decks +94% synergy
Tooth and Nail
100% of 1 decks +94% synergy
Genesis Wave
100% of 1 decks +88% synergy
Traverse the Outlands
100% of 1 decks +87% synergy
Finale of Devastation
100% of 1 decks +83% synergy
Overwhelming Stampede
100% of 1 decks +81% synergy
Green Sun's Zenith
100% of 1 decks +80% synergy
Skyshroud Claim
100% of 1 decks +80% synergy
Shamanic Revelation
100% of 1 decks +76% synergy
Harmonize
100% of 1 decks +69% synergy
Kodama's Reach
100% of 1 decks +59% synergy
Cultivate
100% of 1 decks +46% synergy
Utility Artifacts
Soul Net
100% of 1 decks +100% synergy
Clock of Omens
100% of 1 decks +100% synergy
Boxing Ring
100% of 1 decks +99% synergy
Cloudstone Curio
100% of 1 decks +98% synergy
Ashnod's Altar
100% of 1 decks +98% synergy
Panharmonicon
100% of 1 decks +98% synergy
Vanquisher's Banner
100% of 1 decks +94% synergy
Enchantments
Trudge Garden
100% of 1 decks +100% synergy
Fecundity
100% of 1 decks +98% synergy
Primal Vigor
100% of 1 decks +97% synergy
Parallel Lives
100% of 1 decks +96% synergy
Vernal Bloom
100% of 1 decks +96% synergy
Zendikar Resurgent
100% of 1 decks +90% synergy
Beastmaster Ascension
100% of 1 decks +90% synergy
Elemental Bond
100% of 1 decks +87% synergy
Greater Good
100% of 1 decks +86% synergy
Growing Rites of Itlimoc
100% of 1 decks +85% synergy
Utopia Sprawl
100% of 1 decks +84% synergy
Sylvan Library
100% of 1 decks +80% synergy
Guardian Project
100% of 1 decks +80% synergy
Wild Growth
100% of 1 decks +72% synergy
Garruk's Uprising
100% of 1 decks +64% synergy
Utility Lands
Miren, the Moaning Well
100% of 1 decks +100% synergy
High Market
100% of 1 decks +98% synergy
Wasteland
100% of 1 decks +97% synergy
Homeward Path
100% of 1 decks +96% synergy
Ghost Quarter
100% of 1 decks +95% synergy
Yavimaya Hollow
100% of 1 decks +95% synergy
Strip Mine
100% of 1 decks +94% synergy
Command Beacon
100% of 1 decks +93% synergy
Gaea's Cradle
100% of 1 decks +90% synergy
Dryad Arbor
100% of 1 decks +88% synergy
Boseiju, Who Endures
100% of 1 decks +74% synergy
Mosswort Bridge
100% of 1 decks +72% synergy
Nykthos, Shrine to Nyx
100% of 1 decks +70% synergy
Reliquary Tower
100% of 1 decks +68% synergy
Rogue's Passage
100% of 1 decks +65% synergy
Mana Artifacts
Sol Ring
100% of 1 decks +28% synergy
Lands
Krosan Verge
100% of 1 decks +100% synergy
Opal Palace
100% of 1 decks +95% synergy
Command Tower
100% of 1 decks +95% synergy
Demolition Field
100% of 1 decks +95% synergy
Evolving Wilds
100% of 1 decks +89% synergy
Blighted Woodland
100% of 1 decks +85% synergy
Myriad Landscape
100% of 1 decks +74% synergy