Eerie Ultimatum + Mitotic Slime + Phyrexian Altar + Eternal Witness

Eerie Ultimatum
Mitotic Slime
Phyrexian Altar
Eternal Witness

Requires
Eerie Ultimatum must be in hand. Mitotic Slime must be on the battlefield. Phyrexian Altar must be on the battlefield. Eternal Witness must be on the battlefield.
Steps
  1. Activate Phyrexian Altar twice by sacrificing Mitotic Slime and Eternal Witness, adding ww.
  2. When Mitotic Slime dies, it triggers, creating two 2/2 Ooze creature tokens.
  3. Activate Phyrexian Altar twice by sacrificing the Oozes, adding gg.
  4. When the Oozes die, they trigger, creating four 1/1 Ooze creature tokens.
  5. Activate Phyrexian Altar three times by sacrificing three Oozes, adding bbb.
  6. Cast Eerie Ultimatum by paying wwbbbgg, returning Eternal Witness and Mitotic Slime to the battlefield from your graveyard.
  7. When Eternal Witness enters the battlefield, it triggers, returning Eerie Ultimatum from your graveyard to your hand.
  8. Repeat.
Results
Infinite colored mana. Infinite creature tokens. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite magecraft triggers. Infinite sacrifice triggers. Infinite storm count.

Top Commanders (3)
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0.86% of 116 decks 1 decks
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0.02% of 5238 decks 1 decks
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0.01% of 10113 decks 1 decks
Creatures (50)
Charismatic Conqueror
100% of 1 decks +97% synergy
Yawgmoth, Thran Physician
100% of 3 decks +94% synergy
Bartolomé del Presidio
100% of 1 decks +85% synergy
Viscera Seer
100% of 3 decks +80% synergy
Sakura-Tribe Elder
100% of 3 decks +74% synergy
Elenda, the Dusk Rose
67% of 3 decks +65% synergy
Drivnod, Carnage Dominus
67% of 3 decks +64% synergy
Poison-Tip Archer
67% of 3 decks +63% synergy
Meren of Clan Nel Toth
67% of 3 decks +63% synergy
Springbloom Druid
67% of 3 decks +63% synergy
Woe Strider
67% of 3 decks +61% synergy
Luminous Broodmoth
67% of 3 decks +61% synergy
Avenger of Zendikar
67% of 3 decks +59% synergy
Syr Konrad, the Grim
67% of 3 decks +59% synergy
Wood Elves
67% of 3 decks +58% synergy
Mondrak, Glory Dominus
67% of 3 decks +52% synergy
Blood Artist
67% of 3 decks +52% synergy
Zulaport Cutthroat
67% of 3 decks +51% synergy
Elas il-Kor, Sadistic Pilgrim
67% of 3 decks +49% synergy
Woodland Acolyte
50% of 2 decks +49% synergy
Orcish Bowmasters
50% of 2 decks +41% synergy
Mirkwood Bats
50% of 2 decks +21% synergy
False Prophet
33% of 3 decks +33% synergy
Canoptek Scarab Swarm
33% of 3 decks +33% synergy
Corpse Augur
33% of 3 decks +33% synergy
Endrek Sahr, Master Breeder
33% of 3 decks +33% synergy
Primal Druid
33% of 3 decks +33% synergy
Torsten, Founder of Benalia
33% of 3 decks +33% synergy
Jolrael, Mwonvuli Recluse
33% of 3 decks +33% synergy
Liliana's Standard Bearer
33% of 3 decks +33% synergy
Dreadhound
33% of 3 decks +33% synergy
Diligent Farmhand
33% of 3 decks +33% synergy
Abdel Adrian, Gorion's Ward
33% of 3 decks +33% synergy
Dawntreader Elk
33% of 3 decks +33% synergy
Lord of the Forsaken
33% of 3 decks +33% synergy
Serra Paragon
33% of 3 decks +32% synergy
Ophiomancer
33% of 3 decks +32% synergy
Kokusho, the Evening Star
33% of 3 decks +32% synergy
Smothering Abomination
33% of 3 decks +32% synergy
Hallowed Spiritkeeper
33% of 3 decks +32% synergy
Fleshbag Marauder
33% of 3 decks +32% synergy
Butcher of Malakir
33% of 3 decks +32% synergy
Cataclysmic Gearhulk
33% of 3 decks +31% synergy
Sidisi, Undead Vizier
33% of 3 decks +31% synergy
Massacre Wurm
33% of 3 decks +31% synergy
Mikaeus, the Unhallowed
33% of 3 decks +31% synergy
Morbid Opportunist
33% of 3 decks +31% synergy
Erebos, Bleak-Hearted
33% of 3 decks +30% synergy
Walking Ballista
33% of 3 decks +30% synergy
Wall of Roots
33% of 3 decks +30% synergy
Instants (15)
Darkblast
33% of 3 decks +33% synergy
Reclaim
33% of 3 decks +33% synergy
Wake the Dead
33% of 3 decks +33% synergy
Mausoleum Secrets
33% of 3 decks +33% synergy
Roiling Regrowth
33% of 3 decks +31% synergy
Inkshield
33% of 3 decks +31% synergy
Stinging Study
33% of 3 decks +31% synergy
Plumb the Forbidden
33% of 3 decks +31% synergy
Deadly Dispute
33% of 3 decks +28% synergy
Village Rites
33% of 3 decks +27% synergy
Crop Rotation
33% of 3 decks +24% synergy
Entomb
33% of 3 decks +23% synergy
Anguished Unmaking
33% of 3 decks +4% synergy
Assassin's Trophy
33% of 3 decks +4% synergy
Swords to Plowshares
33% of 3 decks -29% synergy
Sorceries (24)
Eldritch Evolution
67% of 3 decks +61% synergy
Diabolic Intent
67% of 3 decks +59% synergy
Farseek
67% of 3 decks +25% synergy
Lich-Knights' Conquest
50% of 2 decks +47% synergy
Ghoulcaller's Harvest
33% of 3 decks +33% synergy
Growth Spasm
33% of 3 decks +33% synergy
Army of the Damned
33% of 3 decks +33% synergy
Spider Spawning
33% of 3 decks +33% synergy
Diregraf Rebirth
33% of 3 decks +33% synergy
Genesis Wave
33% of 3 decks +33% synergy
Stitch Together
33% of 3 decks +32% synergy
Turntimber Symbiosis
33% of 3 decks +32% synergy
Pest Infestation
33% of 3 decks +32% synergy
Sylvan Scrying
33% of 3 decks +32% synergy
Persist
33% of 3 decks +32% synergy
Sevinne's Reclamation
33% of 3 decks +30% synergy
Agadeem's Awakening
33% of 3 decks +30% synergy
Dread Return
33% of 3 decks +30% synergy
Sign in Blood
33% of 3 decks +30% synergy
Unmarked Grave
33% of 3 decks +29% synergy
Life from the Loam
33% of 3 decks +26% synergy
Three Visits
33% of 3 decks +12% synergy
Nature's Lore
33% of 3 decks +4% synergy
Cultivate
33% of 3 decks -15% synergy
Utility Artifacts (8)
Ashnod's Altar
100% of 3 decks +83% synergy
Birthing Pod
67% of 3 decks +61% synergy
Skullclamp
67% of 3 decks +52% synergy
Weatherlight Compleated
33% of 3 decks +33% synergy
Spawning Pit
33% of 3 decks +33% synergy
Perpetual Timepiece
33% of 3 decks +30% synergy
Crucible of Worlds
33% of 3 decks +27% synergy
Conduit of Worlds
33% of 3 decks +22% synergy
Enchantments (15)
The Meathook Massacre
67% of 3 decks +62% synergy
Martyr's Cause
33% of 3 decks +33% synergy
Attrition
33% of 3 decks +33% synergy
Gift of Immortality
33% of 3 decks +33% synergy
Awakening Zone
33% of 3 decks +32% synergy
Grave Pact
33% of 3 decks +31% synergy
Dictate of Erebos
33% of 3 decks +30% synergy
Greater Good
33% of 3 decks +28% synergy
Bastion of Remembrance
33% of 3 decks +28% synergy
Black Market Connections
33% of 3 decks +26% synergy
Animate Dead
33% of 3 decks +25% synergy
Moldervine Reclamation
33% of 3 decks +22% synergy
Aura Shards
33% of 3 decks +21% synergy
Anointed Procession
33% of 3 decks +20% synergy
Smothering Tithe
33% of 3 decks +15% synergy
Planeswalkers (4)
Liliana, Dreadhorde General
67% of 3 decks +64% synergy
Elspeth, Sun's Champion
33% of 3 decks +31% synergy
Grist, the Hunger Tide
33% of 3 decks +30% synergy
Tyvar, Jubilant Brawler
33% of 3 decks +29% synergy
Utility Lands (16)
Urborg, Tomb of Yawgmoth
67% of 3 decks +46% synergy
Bojuka Bog
67% of 3 decks +37% synergy
Tocasia's Dig Site
33% of 3 decks +33% synergy
Khalni Garden
33% of 3 decks +33% synergy
Memorial to Folly
33% of 3 decks +32% synergy
Geier Reach Sanitarium
33% of 3 decks +30% synergy
Dryad Arbor
33% of 3 decks +29% synergy
Grim Backwoods
33% of 3 decks +29% synergy
Cabal Coffers
33% of 3 decks +28% synergy
Ghost Quarter
33% of 3 decks +26% synergy
High Market
33% of 3 decks +25% synergy
Phyrexian Tower
33% of 3 decks +22% synergy
Takenuma, Abandoned Mire
33% of 3 decks +21% synergy
Reliquary Tower
33% of 3 decks +19% synergy
Boseiju, Who Endures
33% of 3 decks +12% synergy
Yavimaya, Cradle of Growth
33% of 3 decks +7% synergy
Mana Artifacts (2)
Sol Ring
100% of 3 decks +19% synergy
Arcane Signet
33% of 3 decks -33% synergy
Lands (38)
Darkbore Pathway
100% of 3 decks +91% synergy
Branchloft Pathway
100% of 3 decks +90% synergy
Undergrowth Stadium
100% of 3 decks +66% synergy
Indatha Triome
100% of 3 decks +55% synergy
Sandsteppe Citadel
100% of 3 decks +48% synergy
Command Tower
100% of 3 decks +9% synergy
Brightclimb Pathway
67% of 3 decks +58% synergy
Tainted Wood
67% of 3 decks +55% synergy
Llanowar Wastes
67% of 3 decks +39% synergy
Caves of Koilos
67% of 3 decks +38% synergy
Vault of Champions
67% of 3 decks +36% synergy
Bountiful Promenade
67% of 3 decks +34% synergy
Marsh Flats
67% of 3 decks +33% synergy
Verdant Catacombs
67% of 3 decks +33% synergy
Sunpetal Grove
67% of 3 decks +32% synergy
Godless Shrine
67% of 3 decks +20% synergy
Temple Garden
67% of 3 decks +19% synergy
Overgrown Tomb
67% of 3 decks +18% synergy
Exotic Orchard
67% of 3 decks +11% synergy
Fetid Heath
33% of 3 decks +27% synergy
Sunlit Marsh
33% of 3 decks +27% synergy
Tainted Field
33% of 3 decks +22% synergy
Fabled Passage
33% of 3 decks +21% synergy
Orzhov Basilica
33% of 3 decks +18% synergy
Selesnya Sanctuary
33% of 3 decks +17% synergy
Deathcap Glade
33% of 3 decks +17% synergy
Terramorphic Expanse
33% of 3 decks +17% synergy
Krosan Verge
33% of 3 decks +16% synergy
Golgari Rot Farm
33% of 3 decks +16% synergy
Shineshadow Snarl
33% of 3 decks +13% synergy
Necroblossom Snarl
33% of 3 decks +13% synergy
Brushland
33% of 3 decks +9% synergy
Path of Ancestry
33% of 3 decks +8% synergy
Evolving Wilds
33% of 3 decks +5% synergy
Windswept Heath
33% of 3 decks +2% synergy
Isolated Chapel
33% of 3 decks -1% synergy
Woodland Cemetery
33% of 3 decks -4% synergy
Canopy Vista
33% of 3 decks -11% synergy