Adrix and Nev, Twincasters + Sporoloth Ancient + Tainted Observer + Ashnod's Altar

Adrix and Nev, Twincasters
Sporoloth Ancient
Tainted Observer
Ashnod's Altar

Requires
Adrix and Nev, Twincasters must be on the battlefield. Sporoloth Ancient must be on the battlefield. Tainted Observer must be on the battlefield. Ashnod's Altar must be on the battlefield. You control a creature with at least three spore counters on it.
Steps
  1. Activate a creature you control by removing two spore counters from it, creating two 1/1 Saproling creature tokens.
  2. The Saprolings enter the battlefield, triggering Tainted Observer twice.
  3. Holding priority, activate Ashnod's Altar twice by sacrificing the Saprolings, adding cccc.
  4. Resolve both Tainted Observer triggers, causing you to pay 4 to put two spore counters on any creature you control.
  5. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite proliferate. Infinite sacrifice triggers.

Top Commanders (2)
Xavier Sal, Infested Captain
0.04% of 2511 decks 1 decks
Atraxa, Praetors' Voice
0.01% of 32219 decks 2 decks
Creatures (50)
Mycologist
100% of 2 decks +100% synergy
Pallid Mycoderm
100% of 2 decks +100% synergy
Ghave, Guru of Spores
100% of 2 decks +100% synergy
Vitaspore Thallid
100% of 3 decks +100% synergy
Xavier Sal, Infested Captain
100% of 1 decks +100% synergy
Sporesower Thallid
100% of 3 decks +100% synergy
Psychotrope Thallid
100% of 3 decks +100% synergy
Deathspore Thallid
100% of 3 decks +100% synergy
Utopia Mycon
100% of 3 decks +100% synergy
Slimefoot, the Stowaway
100% of 3 decks +100% synergy
Mycoloth
100% of 3 decks +99% synergy
Lae'zel, Vlaakith's Champion
100% of 2 decks +98% synergy
Tekuthal, Inquiry Dominus
100% of 3 decks +98% synergy
Vorinclex, Monstrous Raider
100% of 3 decks +98% synergy
Ojer Taq, Deepest Foundation
100% of 1 decks +96% synergy
Mondrak, Glory Dominus
100% of 2 decks +95% synergy
Elvish Farmer
67% of 3 decks +67% synergy
Spore Flower
67% of 3 decks +67% synergy
Thelon of Havenwood
67% of 3 decks +67% synergy
Nemata, Grove Guardian
67% of 3 decks +67% synergy
Savage Thallid
67% of 3 decks +66% synergy
Thallid
67% of 3 decks +66% synergy
Nemata, Primeval Warden
67% of 3 decks +66% synergy
Winding Constrictor
67% of 3 decks +66% synergy
Ezuri, Stalker of Spheres
67% of 3 decks +66% synergy
Tendershoot Dryad
67% of 3 decks +65% synergy
Tayam, Luminous Enigma
50% of 2 decks +50% synergy
The Mycotyrant
50% of 2 decks +49% synergy
Cankerbloom
50% of 2 decks +46% synergy
Mindbender Spores
33% of 3 decks +33% synergy
Thorn Thallid
33% of 3 decks +33% synergy
Gilder Bairn
33% of 3 decks +33% synergy
Thallid Soothsayer
33% of 3 decks +33% synergy
Korozda Guildmage
33% of 3 decks +33% synergy
Plaguemaw Beast
33% of 3 decks +33% synergy
Thallid Germinator
33% of 3 decks +33% synergy
Thallid Shell-Dweller
33% of 3 decks +33% synergy
Verdeloth the Ancient
33% of 3 decks +33% synergy
Sporecrown Thallid
33% of 3 decks +33% synergy
Merfolk Skydiver
33% of 3 decks +33% synergy
Undercellar Myconid
33% of 3 decks +33% synergy
Scheming Aspirant
33% of 3 decks +33% synergy
Skyfisher Spider
33% of 3 decks +33% synergy
Nullmage Shepherd
33% of 3 decks +33% synergy
Pir, Imaginative Rascal
33% of 3 decks +33% synergy
Sporemound
33% of 3 decks +33% synergy
Mazirek, Kraul Death Priest
33% of 3 decks +33% synergy
Corpsejack Menace
33% of 3 decks +32% synergy
Vigor
33% of 3 decks +32% synergy
Thrummingbird
33% of 3 decks +32% synergy
Instants (14)
Aura Mutation
100% of 2 decks +99% synergy
Fungal Rebirth
67% of 3 decks +66% synergy
Assassin's Trophy
67% of 3 decks +61% synergy
Beast Within
67% of 3 decks +48% synergy
Brokers Confluence
50% of 2 decks +50% synergy
Prologue to Phyresis
50% of 2 decks +49% synergy
Generous Gift
50% of 2 decks +38% synergy
Sprout Swarm
33% of 3 decks +33% synergy
Plumb the Forbidden
33% of 3 decks +32% synergy
Putrefy
33% of 3 decks +30% synergy
Deadly Dispute
33% of 3 decks +28% synergy
Heroic Intervention
33% of 3 decks +20% synergy
Cyclonic Rift
33% of 3 decks +19% synergy
Counterspell
33% of 3 decks +12% synergy
Sorceries (18)
Unnatural Restoration
67% of 3 decks +64% synergy
Kodama's Reach
67% of 3 decks +51% synergy
Farseek
67% of 3 decks +51% synergy
Rampant Growth
67% of 3 decks +50% synergy
Cultivate
67% of 3 decks +44% synergy
Cleansing Meditation
50% of 2 decks +50% synergy
Rout
50% of 2 decks +50% synergy
Death Mutation
33% of 3 decks +33% synergy
Morbid Bloom
33% of 3 decks +33% synergy
Aether Mutation
33% of 3 decks +33% synergy
Cruel Tutor
33% of 3 decks +33% synergy
Saproling Symbiosis
33% of 3 decks +33% synergy
Primal Growth
33% of 3 decks +33% synergy
Clone Legion
33% of 3 decks +33% synergy
Tezzeret's Gambit
33% of 3 decks +31% synergy
Bala Ged Recovery
33% of 3 decks +29% synergy
Three Visits
33% of 3 decks +22% synergy
Nature's Lore
33% of 3 decks +19% synergy
Utility Artifacts (10)
Phyrexian Altar
67% of 3 decks +62% synergy
Skullclamp
67% of 3 decks +54% synergy
Norn's Wellspring
50% of 2 decks +49% synergy
Contagion Engine
33% of 3 decks +32% synergy
Eldrazi Monument
33% of 3 decks +32% synergy
Ichormoon Gauntlet
33% of 3 decks +32% synergy
Contagion Clasp
33% of 3 decks +32% synergy
Thousand-Year Elixir
33% of 3 decks +31% synergy
The Ozolith
33% of 3 decks +30% synergy
Swiftfoot Boots
33% of 3 decks +5% synergy
Enchantments (24)
Court of Ardenvale
100% of 1 decks +99% synergy
Parallel Lives
100% of 3 decks +97% synergy
Anointed Procession
100% of 2 decks +96% synergy
Fungal Plots
67% of 3 decks +66% synergy
Moldervine Reclamation
67% of 3 decks +65% synergy
Growing Rites of Itlimoc
67% of 3 decks +64% synergy
Reflections of Littjara
67% of 3 decks +64% synergy
Doubling Season
67% of 3 decks +63% synergy
Parallax Wave
50% of 2 decks +50% synergy
Resourceful Defense
50% of 2 decks +49% synergy
Tribute to the World Tree
50% of 2 decks +45% synergy
Fungal Bloom
33% of 3 decks +33% synergy
Saproling Burst
33% of 3 decks +33% synergy
Life and Limb
33% of 3 decks +33% synergy
Necrogenesis
33% of 3 decks +33% synergy
Fecundity
33% of 3 decks +33% synergy
Evolutionary Leap
33% of 3 decks +32% synergy
Paradox Haze
33% of 3 decks +32% synergy
Intruder Alarm
33% of 3 decks +32% synergy
Khalni Heart Expedition
33% of 3 decks +32% synergy
Inexorable Tide
33% of 3 decks +32% synergy
Cryptolith Rite
33% of 3 decks +31% synergy
Beastmaster Ascension
33% of 3 decks +31% synergy
Kindred Discovery
33% of 3 decks +30% synergy
Planeswalkers (5)
Vraska, Betrayal's Sting
67% of 3 decks +64% synergy
Kaya, Intangible Slayer
50% of 2 decks +50% synergy
The Wanderer
50% of 2 decks +49% synergy
Tyvar, Jubilant Brawler
33% of 3 decks +32% synergy
Ashiok, Dream Render
33% of 3 decks +32% synergy
Utility Lands (14)
Karn's Bastion
67% of 3 decks +62% synergy
Calciform Pools
50% of 2 decks +50% synergy
Saltcrusted Steppe
50% of 2 decks +50% synergy
Vitu-Ghazi, the City-Tree
50% of 2 decks +50% synergy
Hall of Heliod's Generosity
50% of 2 decks +47% synergy
Arena
33% of 3 decks +33% synergy
Dreadship Reef
33% of 3 decks +33% synergy
Nesting Grounds
33% of 3 decks +32% synergy
Academy Ruins
33% of 3 decks +31% synergy
Castle Garenbrig
33% of 3 decks +31% synergy
Phyrexian Tower
33% of 3 decks +29% synergy
Yavimaya, Cradle of Growth
33% of 3 decks +24% synergy
Temple of the False God
33% of 3 decks +23% synergy
Reliquary Tower
33% of 3 decks +5% synergy
Mana Artifacts (6)
Astral Cornucopia
67% of 3 decks +65% synergy
Sol Ring
67% of 3 decks -18% synergy
Replicating Ring
33% of 3 decks +32% synergy
Everflowing Chalice
33% of 3 decks +28% synergy
Fellwar Stone
33% of 3 decks +12% synergy
Arcane Signet
33% of 3 decks -37% synergy
Lands (22)
Undergrowth Stadium
67% of 3 decks +61% synergy
Vivid Meadow
50% of 2 decks +49% synergy
Bountiful Promenade
50% of 2 decks +45% synergy
Sea of Clouds
50% of 2 decks +44% synergy
Prairie Stream
50% of 2 decks +43% synergy
Temple Garden
50% of 2 decks +41% synergy
Mirrodin's Core
33% of 3 decks +33% synergy
Vivid Marsh
33% of 3 decks +33% synergy
Vivid Creek
33% of 3 decks +33% synergy
Vivid Grove
33% of 3 decks +33% synergy
Ice Tunnel
33% of 3 decks +32% synergy
Thriving Grove
33% of 3 decks +32% synergy
Thriving Isle
33% of 3 decks +32% synergy
Barkchannel Pathway
33% of 3 decks +31% synergy
Clearwater Pathway
33% of 3 decks +30% synergy
Prismatic Vista
33% of 3 decks +27% synergy
Rejuvenating Springs
33% of 3 decks +27% synergy
Breeding Pool
33% of 3 decks +24% synergy
Overgrown Tomb
33% of 3 decks +24% synergy
Fabled Passage
33% of 3 decks +24% synergy
Exotic Orchard
33% of 3 decks -1% synergy
Command Tower
33% of 3 decks -40% synergy