Kotis, Sibsig Champion
Altar of Dementia
Eternal Witness

   Prerequisites

What do I need to start this combo?
Extra Turn Spell - GY on Resolution in hand.
All other permanents on the battlefield.
You have enough mana available each turn to cast the extra turn spell and enough mana each extra turn to cast Eternal Witness. You have not cast a spell using Kotis

   Steps

How does this combo work?
1
Cast the extra turn spell by paying its mana cost, causing you to take an extra turn after this one.
2
Move to your extra turn.
3
Activate Altar of Dementia by sacrificing Eternal Witness, causing you to mill cards equal to Eternal Witness's power.
4
Cast Eternal Witness from your graveyard by paying its mana cost and exiling three other cards from your graveyard, ensuring not to exile the extra turn spell.
5
When Eternal Witness enters the battlefield, it triggers, returning the extra turn spell from your graveyard to your hand.
6
Repeat.

   Results

What do I get from this combo?
Near-infinite turns
Teval, the Balanced Scale
4.37% of 9790 decks 428 decks
Kotis, Sibsig Champion
10.14% of 424 decks 43 decks
Teval, Arbiter of Virtue
0.39% of 2554 decks 10 decks
Sin, Spira's Punishment
0.20% of 505 decks 1 decks
Top Commanders
Sidisi, Brood Tyrant
1.48% of 1421 decks 21 decks
Muldrotha, the Gravetide
0.28% of 3906 decks 11 decks
The Master, Transcendent
0.36% of 548 decks 2 decks
The Wise Mothman
0.02% of 4209 decks 1 decks
The Mimeoplasm
0.10% of 978 decks 1 decks
Tasigur, the Golden Fang
0.10% of 1048 decks 1 decks
Ravos, Soultender // Thrasios, Triton Hero
1.28% of 78 decks 1 decks
Glarb, Calamity's Augur
0.03% of 3392 decks 1 decks
Thrasios, Triton Hero // Tormod, the Desecrator
1.45% of 69 decks 1 decks
Mimeoplasm, Revered One
0.19% of 539 decks 1 decks
New Cards
Teval's Judgment
82% of 519 decks +80% synergy
Colossal Grave-Reaver
82% of 519 decks +76% synergy
Kheru Goldkeeper
65% of 508 decks +58% synergy
Will of the Sultai
61% of 519 decks +59% synergy
Afterlife from the Loam
59% of 519 decks +57% synergy
High Synergy Cards
Life from the Loam
90% of 523 decks +86% synergy
Hedron Crab
77% of 523 decks +76% synergy
Six
77% of 523 decks +72% synergy
Gravecrawler
75% of 523 decks +72% synergy
Ripples of Undeath
76% of 523 decks +71% synergy
Stitcher's Supplier
70% of 523 decks +67% synergy
Victimize
77% of 523 decks +65% synergy
Wonder
68% of 523 decks +65% synergy
Muldrotha, the Gravetide
72% of 523 decks +65% synergy
Conduit of Worlds
69% of 523 decks +64% synergy
Top Cards
Insidious Roots
69% of 523 decks +63% synergy
Living Death
68% of 523 decks +63% synergy
Reanimate
67% of 523 decks +50% synergy
Skull Prophet
64% of 523 decks +59% synergy
Farseek
64% of 523 decks +29% synergy
Sidisi, Brood Tyrant
64% of 523 decks +61% synergy
Hedge Shredder
64% of 523 decks +61% synergy
Dread Return
64% of 523 decks +59% synergy
Sakura-Tribe Elder
63% of 523 decks +45% synergy
Assassin's Trophy
63% of 523 decks +32% synergy
Game Changers
Field of the Dead
47% of 523 decks +44% synergy
Crop Rotation
29% of 523 decks +20% synergy
Cyclonic Rift
16% of 523 decks -10% synergy
Fierce Guardianship
12% of 523 decks -6% synergy
Vampiric Tutor
8% of 523 decks -9% synergy
Glacial Chasm
8% of 523 decks +7% synergy
Gaea's Cradle
6% of 523 decks +0% synergy
Thassa's Oracle
6% of 523 decks -1% synergy
Worldly Tutor
6% of 523 decks -8% synergy
Gifts Ungiven
5% of 523 decks +5% synergy
Creatures
The Gitrog Monster
60% of 523 decks +54% synergy
Kishla Skimmer
58% of 519 decks +55% synergy
Aftermath Analyst
55% of 523 decks +52% synergy
Deathrite Shaman
55% of 523 decks +43% synergy
Meren of Clan Nel Toth
55% of 523 decks +51% synergy
Timeless Witness
54% of 523 decks +51% synergy
Steward of the Harvest
53% of 519 decks +52% synergy
Syr Konrad, the Grim
52% of 523 decks +43% synergy
River Kelpie
50% of 523 decks +49% synergy
The Scarab God
47% of 523 decks +44% synergy
Avenger of Zendikar
47% of 523 decks +38% synergy
Ramunap Excavator
46% of 523 decks +39% synergy
Floral Evoker
45% of 519 decks +44% synergy
Nyx Weaver
43% of 523 decks +38% synergy
Wight of the Reliquary
39% of 523 decks +33% synergy
Lost Monarch of Ifnir
36% of 523 decks +34% synergy
Ob Nixilis, the Fallen
36% of 523 decks +34% synergy
Tatyova, Benthic Druid
36% of 523 decks +23% synergy
Tormod, the Desecrator
31% of 523 decks +30% synergy
Birds of Paradise
31% of 523 decks +3% synergy
Shigeki, Jukai Visionary
30% of 523 decks +28% synergy
Uro, Titan of Nature's Wrath
27% of 523 decks +22% synergy
Hermit Druid
27% of 523 decks +25% synergy
Diviner of Mist
25% of 519 decks +25% synergy
Springbloom Druid
23% of 523 decks +19% synergy
Dauthi Voidwalker
23% of 523 decks +15% synergy
Jarad, Golgari Lich Lord
21% of 523 decks +18% synergy
World Shaper
20% of 523 decks +17% synergy
Bloodghast
19% of 523 decks +17% synergy
Satyr Wayfinder
19% of 523 decks +17% synergy
Lotuslight Dancers
18% of 503 decks +15% synergy
Craterhoof Behemoth
18% of 523 decks +12% synergy
Millikin
18% of 523 decks +17% synergy
Scute Swarm
18% of 523 decks +8% synergy
Golgari Grave-Troll
16% of 523 decks +15% synergy
Underrealm Lich
16% of 523 decks +13% synergy
Molt Tender
16% of 523 decks +15% synergy
Aesi, Tyrant of Gyre Strait
16% of 523 decks +10% synergy
Tasigur, the Golden Fang
15% of 523 decks +14% synergy
Overlord of the Balemurk
14% of 523 decks +12% synergy
Warren Soultrader
14% of 523 decks +9% synergy
Lumra, Bellow of the Woods
13% of 523 decks +11% synergy
Teval, the Balanced Scale
13% of 523 decks +10% synergy
Tireless Provisioner
12% of 523 decks +1% synergy
Sylvan Safekeeper
12% of 523 decks +9% synergy
Lord of Extinction
11% of 523 decks +9% synergy
Junji, the Midnight Sky
11% of 523 decks +9% synergy
Azusa, Lost but Seeking
10% of 523 decks +3% synergy
Multani, Yavimaya's Avatar
10% of 523 decks +8% synergy
Golgari Thug
10% of 523 decks +8% synergy
Instants
Harrow
45% of 523 decks +36% synergy
Grapple with the Past
45% of 523 decks +43% synergy
Tear Asunder
44% of 523 decks +38% synergy
Beast Within
41% of 523 decks +4% synergy
Putrefy
35% of 523 decks +19% synergy
Lethal Scheme
32% of 523 decks +30% synergy
Grisly Salvage
29% of 523 decks +23% synergy
Entomb
27% of 523 decks +20% synergy
Counterspell
26% of 523 decks -16% synergy
An Offer You Can't Refuse
21% of 523 decks -1% synergy
Noxious Revival
15% of 523 decks +10% synergy
Heroic Intervention
14% of 523 decks -15% synergy
Auroral Procession
11% of 523 decks +8% synergy
Deadly Rollick
10% of 523 decks -1% synergy
Arcane Denial
10% of 523 decks -10% synergy
Forbidden Alchemy
9% of 523 decks +7% synergy
Smuggler's Surprise
9% of 523 decks +6% synergy
Swan Song
8% of 523 decks -8% synergy
Abrupt Decay
8% of 523 decks -3% synergy
Mana Drain
8% of 523 decks -7% synergy
Fell the Profane
7% of 523 decks -1% synergy
Frantic Search
6% of 523 decks -7% synergy
Dark Ritual
6% of 523 decks -16% synergy
Drag to the Roots
6% of 523 decks +4% synergy
Sink into Stupor
6% of 523 decks -3% synergy
Malakir Rebirth
6% of 523 decks -2% synergy
Revitalizing Repast
6% of 523 decks -3% synergy
Negate
5% of 523 decks -17% synergy
Sorceries
Welcome the Dead
42% of 519 decks +41% synergy
Rampant Growth
39% of 523 decks +5% synergy
Nature's Lore
37% of 523 decks +5% synergy
Cultivate
31% of 523 decks -14% synergy
Three Visits
27% of 523 decks +2% synergy
Toxic Deluge
24% of 523 decks +6% synergy
Buried Alive
17% of 523 decks +12% synergy
Bala Ged Recovery
17% of 523 decks +8% synergy
Treasure Cruise
16% of 523 decks +11% synergy
Death Begets Life
11% of 519 decks +8% synergy
Demonic Tutor
11% of 523 decks -11% synergy
Casualties of War
10% of 523 decks +5% synergy
Breach the Multiverse
10% of 523 decks +6% synergy
Necromantic Selection
10% of 523 decks +8% synergy
Rise of the Dark Realms
8% of 523 decks +5% synergy
Rise of the Witch-king
8% of 523 decks +3% synergy
Finale of Devastation
7% of 523 decks -1% synergy
Blasphemous Edict
7% of 523 decks -1% synergy
Culling Ritual
7% of 523 decks -5% synergy
Windfall
7% of 523 decks -6% synergy
Malevolent Rumble
6% of 523 decks +5% synergy
Damnation
6% of 523 decks -1% synergy
Squirming Emergence
6% of 523 decks +3% synergy
Diabolic Intent
5% of 523 decks -3% synergy
Utility Artifacts
Lightning Greaves
36% of 523 decks +11% synergy
Phyrexian Altar
34% of 523 decks +30% synergy
Mesmeric Orb
22% of 523 decks +21% synergy
Crucible of Worlds
16% of 523 decks +14% synergy
Ashnod's Altar
13% of 523 decks +6% synergy
Essence Anchor
8% of 519 decks +7% synergy
Perpetual Timepiece
7% of 523 decks +6% synergy
Zuran Orb
6% of 523 decks +5% synergy
Palantír of Orthanc
6% of 523 decks +4% synergy
Elixir of Immortality
6% of 523 decks +4% synergy
Swiftfoot Boots
6% of 523 decks -22% synergy
Cursecloth Wrappings
5% of 523 decks +5% synergy
Amulet of Vigor
5% of 523 decks +4% synergy
Enchantments
Phyrexian Reclamation
54% of 523 decks +50% synergy
Tortured Existence
48% of 523 decks +46% synergy
Animate Dead
39% of 523 decks +29% synergy
Titans' Nest
38% of 523 decks +37% synergy
Crawling Sensation
19% of 523 decks +18% synergy
Awaken the Honored Dead
16% of 523 decks +12% synergy
Walk-In Closet // Forgotten Cellar
13% of 523 decks +11% synergy
Exploration
13% of 523 decks +5% synergy
Glacierwood Siege
13% of 520 decks +11% synergy
Out of the Tombs
12% of 523 decks +11% synergy
Oversold Cemetery
11% of 523 decks +9% synergy
Rhystic Study
11% of 523 decks -15% synergy
Chthonian Nightmare
9% of 523 decks +7% synergy
Spelunking
8% of 523 decks +4% synergy
Sultai Ascendancy
7% of 523 decks +5% synergy
The Meathook Massacre
7% of 523 decks +1% synergy
Dredger's Insight
6% of 523 decks +5% synergy
Necromancy
6% of 523 decks +3% synergy
Mystic Remora
6% of 523 decks -11% synergy
Planeswalkers
Grist, the Hunger Tide
9% of 523 decks +5% synergy
Tyvar, Jubilant Brawler
6% of 523 decks +2% synergy
Utility Lands
Command Beacon
59% of 523 decks +55% synergy
Cephalid Coliseum
50% of 523 decks +46% synergy
Shifting Woodland
47% of 523 decks +40% synergy
Takenuma, Abandoned Mire
37% of 523 decks +28% synergy
Boseiju, Who Endures
37% of 523 decks +18% synergy
Memorial to Folly
34% of 523 decks +33% synergy
Crypt of Agadeem
33% of 523 decks +32% synergy
Yavimaya, Cradle of Growth
33% of 523 decks +24% synergy
Urborg, Tomb of Yawgmoth
31% of 523 decks +21% synergy
Drownyard Temple
29% of 523 decks +28% synergy
Dakmor Salvage
28% of 523 decks +26% synergy
Bojuka Bog
22% of 523 decks -8% synergy
Otawara, Soaring City
18% of 523 decks +2% synergy
Strip Mine
17% of 523 decks +14% synergy
Phyrexian Tower
17% of 523 decks +8% synergy
Kishla Village
11% of 523 decks +9% synergy
Mistrise Village
10% of 523 decks +3% synergy
Lotus Field
10% of 523 decks +8% synergy
Cabal Coffers
9% of 523 decks -1% synergy
Reliquary Tower
8% of 523 decks -22% synergy
Ghost Quarter
7% of 523 decks +5% synergy
Wasteland
6% of 523 decks +5% synergy
Dryad Arbor
6% of 523 decks +2% synergy
Thespian's Stage
5% of 523 decks +3% synergy
Mana Artifacts
Sol Ring
87% of 523 decks +3% synergy
Arcane Signet
76% of 523 decks +4% synergy
Fellwar Stone
8% of 523 decks -13% synergy
Talisman of Curiosity
7% of 523 decks -6% synergy
Talisman of Resilience
7% of 523 decks -6% synergy
Talisman of Dominance
6% of 523 decks -26% synergy
Lands
Command Tower
98% of 523 decks +23% synergy
Woodland Cemetery
72% of 523 decks +42% synergy
Exotic Orchard
70% of 523 decks +34% synergy
Hinterland Harbor
67% of 523 decks +37% synergy
Dreamroot Cascade
66% of 523 decks +46% synergy
Overgrown Tomb
64% of 523 decks +23% synergy
Watery Grave
62% of 523 decks +22% synergy
Breeding Pool
61% of 523 decks +21% synergy
Opulent Palace
59% of 523 decks +31% synergy
Polluted Delta
57% of 523 decks +46% synergy
Zagoth Triome
57% of 523 decks +28% synergy
Llanowar Wastes
57% of 523 decks +30% synergy
Misty Rainforest
55% of 523 decks +43% synergy
Verdant Catacombs
55% of 523 decks +43% synergy
Foreboding Landscape
51% of 523 decks +42% synergy
Sunken Hollow
51% of 523 decks +16% synergy
Underground Mortuary
45% of 523 decks +32% synergy
Hedge Maze
42% of 523 decks +31% synergy
Undergrowth Stadium
41% of 523 decks +15% synergy
Rejuvenating Springs
40% of 523 decks +12% synergy
Undercity Sewers
39% of 523 decks +28% synergy
Terramorphic Expanse
36% of 523 decks +21% synergy
Golgari Rot Farm
30% of 523 decks +12% synergy
Morphic Pool
29% of 523 decks +3% synergy
Darkwater Catacombs
25% of 523 decks +10% synergy
Fabled Passage
24% of 523 decks +15% synergy
Fetid Pools
24% of 523 decks +17% synergy
Drowned Catacomb
23% of 523 decks -4% synergy
Deathcap Glade
19% of 523 decks +5% synergy
Yavimaya Coast
18% of 523 decks -9% synergy
Myriad Landscape
18% of 523 decks -1% synergy
Shipwreck Marsh
16% of 523 decks -2% synergy
Temple of Malady
16% of 523 decks -1% synergy
Haunted Mire
15% of 523 decks +7% synergy
Windswept Heath
13% of 523 decks +3% synergy
Evolving Wilds
13% of 523 decks -8% synergy
Underground River
12% of 523 decks -9% synergy
Flooded Strand
12% of 523 decks +1% synergy
Wastewood Verge
11% of 523 decks +5% synergy
Bloodstained Mire
11% of 523 decks +1% synergy
Bayou
11% of 523 decks -3% synergy
Underground Sea
11% of 523 decks -3% synergy
Marsh Flats
11% of 523 decks -0% synergy
Tropical Island
11% of 523 decks -4% synergy
Wooded Foothills
10% of 523 decks -0% synergy
Contaminated Aquifer
10% of 523 decks +7% synergy
Willowrush Verge
8% of 523 decks +2% synergy
Gloomlake Verge
8% of 523 decks -1% synergy
Waterlogged Grove
7% of 523 decks +0% synergy
Scalding Tarn
7% of 523 decks -3% synergy