Osgir, the Reconstructor + Ugin's Nexus + Mirror of Fate + Codex Shredder

Osgir, the Reconstructor
Ugin's Nexus
Mirror of Fate
Codex Shredder

Requires
Osgir, the Reconstructor must be on the battlefield. Ugin's Nexus must be in the graveyard. Mirror of Fate must be in the graveyard. Codex Shredder must be on the battlefield. Osgir does not have summoning sickness. You have at least one card in exile. Mana needed: 6 (at most) each turn
Steps
  1. Activate Osgir's second ability by paying 5, tapping it and exiling Ugin's Nexus from your graveyard, creating two token copies of Ugin's Nexus.
  2. Exile one of the Ugin's Nexus copies due to the legend rule, causing you to take an extra turn after this one.
  3. Activate Osgir's first ability by paying 1 and sacrificing the remaining Ugin's Nexus token.
  4. The Ugin's Nexus token is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
  5. Resolve the Osgir ability, giving a creature you control +2/+0 until end of turn.
  6. Move to your first extra turn.
  7. If you do not control a Mirror of Fate token, activate Osgir's second ability by paying 5, tapping it and exiling Mirror of Fate from your graveyard, creating two token copies of Mirror of Fate.
  8. Activate a Mirror of Fate token by tapping and sacrificing it, choosing Ugin's Nexus, any other card in exile, Mirror of Fate and up to four other cards in exile, then exiling your library and putting the chosen cards on top in the aforementioned order.
  9. Activate Codex Shredder's first ability by tapping it, causing you to mill Ugin's Nexus.
  10. Move to your second extra turn.
  11. Activate Codex Shredder's first ability by tapping it, causing you to mill Mirror of Fate.
  12. Repeat.
Results
Infinite turns.

Osgir, the Reconstructor
1.24% of 5792 decks 72 decks
New Cards
Marvin, Murderous Mimic
100% of 4 decks +79% synergy
High Synergy Cards
Goblin Engineer
92% of 72 decks +85% synergy
Ancient Den
97% of 72 decks +85% synergy
Darksteel Citadel
93% of 72 decks +85% synergy
Oswald Fiddlebender
89% of 72 decks +83% synergy
Great Furnace
96% of 72 decks +83% synergy
Goblin Welder
78% of 72 decks +73% synergy
Ichor Wellspring
75% of 72 decks +70% synergy
Rings of Brighthearth
71% of 72 decks +67% synergy
Thousand-Year Elixir
69% of 72 decks +65% synergy
Ethersworn Canonist
69% of 72 decks +64% synergy
Top Cards
Swords to Plowshares
92% of 72 decks +23% synergy
Faithless Looting
78% of 72 decks +59% synergy
Gamble
69% of 72 decks +61% synergy
Esper Sentinel
68% of 72 decks +40% synergy
Basalt Monolith
62% of 72 decks +59% synergy
Lightning Greaves
62% of 72 decks +35% synergy
Karn, the Great Creator
61% of 72 decks +59% synergy
Cursed Mirror
61% of 72 decks +53% synergy
Mind Stone
60% of 72 decks +28% synergy
Enlightened Tutor
58% of 72 decks +40% synergy
Creatures
Imperial Recruiter
50% of 72 decks +38% synergy
Solemn Simulacrum
47% of 72 decks +23% synergy
Zirda, the Dawnwaker
46% of 72 decks +40% synergy
Kuldotha Forgemaster
44% of 72 decks +43% synergy
Foundry Inspector
39% of 72 decks +30% synergy
Angel of the Ruins
36% of 72 decks +32% synergy
Drannith Magistrate
36% of 72 decks +29% synergy
Archivist of Oghma
34% of 65 decks +26% synergy
Lodestone Golem
32% of 72 decks +31% synergy
Walking Ballista
32% of 72 decks +30% synergy
Ranger-Captain of Eos
32% of 72 decks +27% synergy
Grand Abolisher
32% of 72 decks +21% synergy
Wurmcoil Engine
28% of 72 decks +25% synergy
Combustible Gearhulk
28% of 72 decks +23% synergy
Archon of Emeria
28% of 72 decks +22% synergy
Ocelot Pride
27% of 11 decks +18% synergy
Myr Battlesphere
26% of 72 decks +22% synergy
Dockside Extortionist
26% of 72 decks +16% synergy
Myr Retriever
25% of 72 decks +22% synergy
Scrap Trawler
25% of 72 decks +20% synergy
Bronze Guardian
25% of 72 decks +20% synergy
Boromir, Warden of the Tower
24% of 37 decks +15% synergy
Mondrak, Glory Dominus
24% of 50 decks +13% synergy
Eidolon of Rhetoric
24% of 72 decks +19% synergy
Meteor Golem
22% of 72 decks +19% synergy
Aven Mindcensor
22% of 72 decks +15% synergy
Skrelv, Defector Mite
22% of 51 decks +13% synergy
Phyrexian Censor
20% of 44 decks +19% synergy
Ruin Grinder
19% of 72 decks +18% synergy
Quicksmith Genius
18% of 72 decks +16% synergy
Recruiter of the Guard
18% of 72 decks +10% synergy
Stoneforge Mystic
17% of 72 decks +5% synergy
Witch Enchanter
17% of 18 decks -1% synergy
Alibou, Ancient Witness
15% of 72 decks +9% synergy
Giver of Runes
15% of 72 decks +8% synergy
Illustrious Wanderglyph
14% of 28 decks +10% synergy
Liberator, Urza's Battlethopter
14% of 57 decks +13% synergy
Queen Kayla bin-Kroog
14% of 57 decks +12% synergy
Hushbringer
14% of 72 decks +13% synergy
Triplicate Titan
14% of 72 decks +11% synergy
Steel Hellkite
14% of 72 decks +11% synergy
Hellkite Tyrant
14% of 72 decks +10% synergy
Reckless Fireweaver
14% of 72 decks +9% synergy
Thalia, Guardian of Thraben
14% of 72 decks +8% synergy
Ornithopter of Paradise
14% of 72 decks +1% synergy
Mother of Runes
14% of 72 decks -1% synergy
Slobad, Iron Goblin
13% of 52 decks +13% synergy
Lion Sash
13% of 68 decks +2% synergy
Doorkeeper Thrull
13% of 23 decks +12% synergy
Audacious Reshapers
12% of 72 decks +10% synergy
Instants
Dispatch
54% of 72 decks +40% synergy
Pull from Eternity
36% of 72 decks +34% synergy
Deflecting Swat
35% of 72 decks +19% synergy
Generous Gift
35% of 72 decks -5% synergy
Boros Charm
35% of 72 decks -20% synergy
Path to Exile
35% of 72 decks -22% synergy
Silence
28% of 72 decks +22% synergy
Abrade
28% of 72 decks +14% synergy
Wear // Tear
28% of 72 decks +2% synergy
Teferi's Protection
26% of 72 decks +6% synergy
Pyroblast
25% of 72 decks +20% synergy
Demand Answers
22% of 27 decks +12% synergy
Red Elemental Blast
19% of 72 decks +14% synergy
Chaos Warp
18% of 72 decks -16% synergy
Reprieve
17% of 46 decks +9% synergy
Heliod's Intervention
17% of 72 decks +14% synergy
Tibalt's Trickery
15% of 72 decks +9% synergy
Thrill of Possibility
12% of 72 decks -1% synergy
Return to Dust
11% of 72 decks +4% synergy
Get Lost
10% of 30 decks +5% synergy
Blacksmith's Skill
10% of 72 decks +2% synergy
Sejiri Shelter
10% of 72 decks +0% synergy
Surge of Salvation
9% of 44 decks +4% synergy
Valakut Awakening
8% of 72 decks +0% synergy
Lightning Bolt
8% of 72 decks -1% synergy
Clever Concealment
6% of 49 decks -3% synergy
Fateful Absence
6% of 70 decks +5% synergy
Settle the Wreckage
6% of 72 decks +3% synergy
Sorceries
Reckless Handling
51% of 43 decks +46% synergy
Jeska's Will
33% of 72 decks +13% synergy
Blasphemous Act
33% of 72 decks +0% synergy
Sevinne's Reclamation
26% of 72 decks +15% synergy
Fervent Mastery
25% of 72 decks +25% synergy
Vandalblast
24% of 72 decks +8% synergy
Vanquish the Horde
16% of 70 decks +11% synergy
Wheel of Misfortune
15% of 72 decks +12% synergy
Shatterskull Smashing
15% of 72 decks +10% synergy
Trash for Treasure
14% of 72 decks +12% synergy
Farewell
13% of 68 decks +2% synergy
Austere Command
12% of 72 decks -4% synergy
Winds of Abandon
11% of 72 decks +9% synergy
Wheel of Fortune
11% of 72 decks +8% synergy
Cathartic Reunion
11% of 72 decks +7% synergy
Search for Glory
10% of 72 decks +8% synergy
Tormenting Voice
10% of 72 decks +6% synergy
Wake the Past
10% of 72 decks +5% synergy
Wrath of God
10% of 72 decks +3% synergy
Armageddon
8% of 72 decks +8% synergy
Saheeli's Directive
8% of 72 decks +7% synergy
Thrilling Discovery
8% of 72 decks +1% synergy
Scrap Mastery
7% of 72 decks +6% synergy
Act on Impulse
6% of 72 decks +5% synergy
Emeria's Call
6% of 72 decks +2% synergy
Cleansing Nova
6% of 72 decks +1% synergy
Utility Artifacts
Mishra's Bauble
51% of 72 decks +49% synergy
Vexing Bauble
50% of 14 decks +48% synergy
Mystic Forge
46% of 72 decks +42% synergy
Dusk Rose Reliquary
43% of 30 decks +42% synergy
Sensei's Divining Top
42% of 72 decks +39% synergy
Sculpting Steel
39% of 72 decks +33% synergy
Moonsilver Key
37% of 70 decks +35% synergy
The One Ring
37% of 46 decks +32% synergy
Staff of Domination
36% of 72 decks +34% synergy
Urza's Bauble
32% of 72 decks +31% synergy
Swiftfoot Boots
31% of 72 decks -14% synergy
Soul-Guide Lantern
29% of 72 decks +26% synergy
Brass's Tunnel-Grinder
27% of 30 decks +23% synergy
Thorn of Amethyst
25% of 72 decks +22% synergy
Mycosynth Lattice
24% of 72 decks +22% synergy
Krark-Clan Ironworks
24% of 72 decks +22% synergy
Illusionist's Bracers
24% of 72 decks +20% synergy
Grafdigger's Cage
22% of 72 decks +22% synergy
Expedition Map
22% of 72 decks +21% synergy
Cloud Key
21% of 72 decks +19% synergy
Pithing Needle
19% of 72 decks +19% synergy
Battlemage's Bracers
19% of 72 decks +15% synergy
Archaeomancer's Map
19% of 72 decks +10% synergy
Portable Hole
18% of 72 decks +17% synergy
Manifold Key
18% of 72 decks +17% synergy
Portal to Phyrexia
18% of 57 decks +16% synergy
Halo Fountain
17% of 65 decks +14% synergy
Torpor Orb
17% of 72 decks +16% synergy
Mirage Mirror
17% of 72 decks +15% synergy
Agatha's Soul Cauldron
16% of 31 decks +15% synergy
God-Pharaoh's Statue
15% of 72 decks +15% synergy
Grinding Station
15% of 72 decks +15% synergy
Winter Orb
14% of 72 decks +14% synergy
Conqueror's Flail
14% of 72 decks +11% synergy
Idol of Oblivion
14% of 72 decks +2% synergy
Wayfarer's Bauble
14% of 72 decks -3% synergy
Nexus of Becoming
14% of 22 decks +13% synergy
Mesmeric Orb
12% of 72 decks +12% synergy
Conjurer's Bauble
12% of 72 decks +12% synergy
Trinisphere
12% of 72 decks +12% synergy
Isochron Scepter
12% of 72 decks +12% synergy
Key to the City
12% of 72 decks +11% synergy
Mycosynth Wellspring
12% of 72 decks +10% synergy
Ensnaring Bridge
11% of 72 decks +11% synergy
Tormod's Crypt
11% of 72 decks +11% synergy
Damping Sphere
11% of 72 decks +11% synergy
Trading Post
11% of 72 decks +10% synergy
Magewright's Stone
11% of 72 decks +9% synergy
Knowledge Pool
10% of 72 decks +10% synergy
Weathered Runestone
10% of 72 decks +10% synergy
Enchantments
High Noon
36% of 22 decks +31% synergy
Smothering Tithe
36% of 72 decks +13% synergy
Deafening Silence
31% of 72 decks +25% synergy
Rule of Law
28% of 72 decks +26% synergy
Anointed Procession
26% of 72 decks +17% synergy
Blind Obedience
25% of 72 decks +22% synergy
Darksteel Mutation
21% of 72 decks +16% synergy
Ghostly Prison
18% of 72 decks +11% synergy
Trouble in Pairs
17% of 23 decks +5% synergy
Blood Moon
14% of 72 decks +12% synergy
Underworld Breach
12% of 72 decks +10% synergy
Bitter Reunion
7% of 57 decks +5% synergy
Stranglehold
7% of 72 decks +6% synergy
All Will Be One
6% of 49 decks +5% synergy
Possibility Storm
6% of 72 decks +5% synergy
Paladin Class
6% of 72 decks +3% synergy
Planeswalkers
Daretti, Scrap Savant
56% of 72 decks +50% synergy
Ugin, the Ineffable
14% of 72 decks +12% synergy
Nahiri, the Harbinger
8% of 72 decks +5% synergy
Utility Lands
Arena of Glory
64% of 11 decks +50% synergy
Inventors' Fair
58% of 72 decks +49% synergy
Urza's Saga
56% of 72 decks +45% synergy
Fomori Vault
53% of 19 decks +50% synergy
Treasure Vault
50% of 72 decks +47% synergy
Monumental Henge
47% of 17 decks +39% synergy
Buried Ruin
42% of 72 decks +26% synergy
Ancient Tomb
35% of 72 decks +25% synergy
Slayers' Stronghold
29% of 72 decks +1% synergy
Secluded Steppe
18% of 72 decks +10% synergy
Eiganjo, Seat of the Empire
18% of 68 decks +2% synergy
Forgotten Cave
17% of 72 decks +8% synergy
Rogue's Passage
17% of 72 decks -14% synergy
Urza's Tower
15% of 72 decks +14% synergy
Urza's Mine
15% of 72 decks +14% synergy
Urza's Power Plant
15% of 72 decks +14% synergy
Phyrexia's Core
15% of 72 decks +14% synergy
Command Beacon
11% of 72 decks +6% synergy
War Room
10% of 72 decks -2% synergy
Reliquary Tower
10% of 72 decks -8% synergy
Geier Reach Sanitarium
8% of 72 decks +6% synergy
Sunhome, Fortress of the Legion
8% of 72 decks -13% synergy
Bazaar of Baghdad
7% of 72 decks +7% synergy
Inkmoth Nexus
7% of 72 decks +5% synergy
Karn's Bastion
7% of 72 decks +3% synergy
Roadside Reliquary
6% of 68 decks +4% synergy
Remote Farm
6% of 72 decks +5% synergy
Mishra's Workshop
6% of 72 decks +5% synergy
Temple of the False God
6% of 72 decks -4% synergy
Urza's Workshop
5% of 57 decks +5% synergy
Mana Artifacts
Sol Ring
99% of 72 decks +12% synergy
Arcane Signet
88% of 72 decks +7% synergy
Boros Signet
56% of 72 decks -4% synergy
Talisman of Conviction
50% of 72 decks -3% synergy
Coveted Jewel
44% of 72 decks +43% synergy
Mox Opal
42% of 72 decks +37% synergy
Mana Vault
40% of 72 decks +35% synergy
Lotus Petal
38% of 72 decks +32% synergy
Jeweled Lotus
36% of 72 decks +31% synergy
Chromatic Star
35% of 72 decks +34% synergy
Lotus Bloom
31% of 72 decks +30% synergy
Mana Crypt
31% of 72 decks +23% synergy
Fellwar Stone
29% of 72 decks +3% synergy
Chrome Mox
25% of 72 decks +20% synergy
Chromatic Sphere
24% of 72 decks +23% synergy
Liquimetal Torque
22% of 72 decks +16% synergy
Thran Dynamo
21% of 72 decks +16% synergy
Hedron Archive
18% of 72 decks +14% synergy
Sol Talisman
17% of 72 decks +15% synergy
Commander's Sphere
17% of 72 decks -4% synergy
Lion's Eye Diamond
12% of 72 decks +12% synergy
Mox Diamond
12% of 72 decks +9% synergy
Patriar's Seal
12% of 65 decks +8% synergy
Mox Amber
11% of 72 decks +6% synergy
Grim Monolith
10% of 72 decks +8% synergy
Arcum's Astrolabe
8% of 72 decks +8% synergy
Vexing Puzzlebox
8% of 65 decks +7% synergy
The Mightstone and Weakstone
7% of 57 decks +7% synergy
Gilded Lotus
7% of 72 decks +4% synergy
Mox Tantalite
6% of 72 decks +5% synergy
Blinkmoth Urn
6% of 72 decks +5% synergy
Lands
Command Tower
94% of 72 decks +8% synergy
Battlefield Forge
82% of 72 decks +25% synergy
Sacred Foundry
68% of 72 decks +24% synergy
Spectator Seating
61% of 72 decks +18% synergy
Arid Mesa
57% of 72 decks +27% synergy
Rustvale Bridge
53% of 72 decks +39% synergy
Clifftop Retreat
43% of 72 decks -14% synergy
Spire of Industry
40% of 72 decks +35% synergy
Exotic Orchard
40% of 72 decks +13% synergy
Needleverge Pathway
39% of 72 decks +9% synergy
Elegant Parlor
37% of 27 decks +15% synergy
The Mycosynth Gardens
33% of 51 decks +29% synergy
Sunbaked Canyon
29% of 72 decks +13% synergy
Boros Garrison
29% of 72 decks -14% synergy
Sundown Pass
29% of 69 decks -6% synergy
Marsh Flats
24% of 72 decks +16% synergy
Plateau
24% of 72 decks +11% synergy
Rugged Prairie
24% of 72 decks -11% synergy
Temple of Triumph
24% of 72 decks -18% synergy
Sunscorched Divide
22% of 23 decks +1% synergy
Power Depot
21% of 72 decks +18% synergy
Furycalm Snarl
21% of 72 decks -21% synergy
Prismatic Vista
18% of 72 decks +11% synergy
Urza's Cave
17% of 18 decks +15% synergy
Wooded Foothills
15% of 72 decks +9% synergy
Windswept Heath
15% of 72 decks +8% synergy
Gemstone Caverns
14% of 72 decks +10% synergy
Flooded Strand
14% of 72 decks +7% synergy
Scalding Tarn
12% of 72 decks +6% synergy
Myriad Landscape
12% of 72 decks -15% synergy
Mana Confluence
11% of 72 decks +7% synergy
City of Brass
11% of 72 decks +6% synergy
Bloodstained Mire
11% of 72 decks +4% synergy
Inspiring Vantage
11% of 72 decks -3% synergy
Lorehold Campus
10% of 72 decks +4% synergy
Alpine Meadow
7% of 72 decks -3% synergy
Study Hall
6% of 72 decks +5% synergy
Ash Barrens
6% of 72 decks +1% synergy
Cavern of Souls
6% of 72 decks +1% synergy