Tainted Observer + Ashnod's Altar + Saproling Burst

Tainted Observer
Ashnod's Altar
Saproling Burst

Requires
Tainted Observer must be on the battlefield. Ashnod's Altar must be on the battlefield. Saproling Burst must be on the battlefield. Saproling Burst has at least two fade counters on it.
Steps
  1. Activate Saproling Burst by removing a fade counter from it, creating a */* Saproling creature token.
  2. When the Saproling enters the battlefield, Tainted Observer triggers.
  3. Holding priority, activate Ashnod's Altar by sacrificing the Saproling, adding .
  4. Resolve the Tainted Observer trigger, causing you to pay 2 to put a fade counter on Saproling Burst.
  5. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite proliferate. Infinite sacrifice triggers.

Volrath, the Shapestealer
0.04% of 2631 decks 1 decks
Xavier Sal, Infested Captain
0.03% of 3690 decks 1 decks
Atraxa, Praetors' Voice
0.01% of 34221 decks 3 decks
Top Cards
Mycoloth
80% of 5 decks +79% synergy
Tekuthal, Inquiry Dominus
80% of 5 decks +79% synergy
Cankerbloom
80% of 5 decks +76% synergy
Rampant Growth
80% of 5 decks +64% synergy
Creatures
Pallid Mycoderm
100% of 3 decks +100% synergy
Ghave, Guru of Spores
67% of 3 decks +67% synergy
Grateful Apparition
67% of 3 decks +66% synergy
Lae'zel, Vlaakith's Champion
67% of 3 decks +65% synergy
Spore Flower
60% of 5 decks +60% synergy
Vitaspore Thallid
60% of 5 decks +60% synergy
Sporoloth Ancient
60% of 5 decks +60% synergy
Sporesower Thallid
60% of 5 decks +60% synergy
Psychotrope Thallid
60% of 5 decks +60% synergy
Deathspore Thallid
60% of 5 decks +60% synergy
Utopia Mycon
60% of 5 decks +60% synergy
Slimefoot, the Stowaway
60% of 5 decks +60% synergy
Nemata, Primeval Warden
60% of 5 decks +59% synergy
Ezuri, Stalker of Spheres
60% of 5 decks +59% synergy
Tendershoot Dryad
60% of 5 decks +59% synergy
Thrummingbird
60% of 5 decks +58% synergy
Xavier Sal, Infested Captain
50% of 2 decks +50% synergy
Scheming Aspirant
50% of 4 decks +50% synergy
Elvish Farmer
40% of 5 decks +40% synergy
Myconid Spore Tender
40% of 5 decks +40% synergy
Nemata, Grove Guardian
40% of 5 decks +40% synergy
Savage Thallid
40% of 5 decks +40% synergy
Thallid
40% of 5 decks +40% synergy
Merfolk Skydiver
40% of 5 decks +40% synergy
Undercellar Myconid
40% of 5 decks +40% synergy
Sphinx of the Second Sun
40% of 5 decks +39% synergy
Winding Constrictor
40% of 5 decks +39% synergy
Evolution Sage
40% of 5 decks +37% synergy
Mycologist
33% of 3 decks +33% synergy
Cruel Celebrant
33% of 3 decks +31% synergy
Welcoming Vampire
33% of 3 decks +31% synergy
Elas il-Kor, Sadistic Pilgrim
33% of 3 decks +31% synergy
Mentor of the Meek
33% of 3 decks +30% synergy
Mondrak, Glory Dominus
33% of 3 decks +29% synergy
Ichorspit Basilisk
25% of 4 decks +25% synergy
Locust Swarm
20% of 5 decks +20% synergy
Mindbender Spores
20% of 5 decks +20% synergy
Thorn Thallid
20% of 5 decks +20% synergy
Will-o'-the-Wisp
20% of 5 decks +20% synergy
Gilder Bairn
20% of 5 decks +20% synergy
Thallid Devourer
20% of 5 decks +20% synergy
Thelon of Havenwood
20% of 5 decks +20% synergy
The Mimeoplasm
20% of 5 decks +20% synergy
Experiment Kraj
20% of 5 decks +20% synergy
Thallid Soothsayer
20% of 5 decks +20% synergy
Korozda Guildmage
20% of 5 decks +20% synergy
Venser, Corpse Puppet
20% of 5 decks +20% synergy
Sun Quan, Lord of Wu
20% of 5 decks +20% synergy
Thallid Germinator
20% of 5 decks +20% synergy
Hell's Caretaker
20% of 5 decks +20% synergy
Instants
Aura Mutation
100% of 3 decks +99% synergy
For the Ancestors
50% of 2 decks +49% synergy
Mutational Advantage
50% of 2 decks +48% synergy
Fungal Rebirth
40% of 5 decks +40% synergy
Whisper of the Dross
40% of 5 decks +39% synergy
Cyclonic Rift
40% of 5 decks +26% synergy
Beast Within
40% of 5 decks +22% synergy
Counterspell
40% of 5 decks +19% synergy
Ready // Willing
33% of 3 decks +33% synergy
Deny the Witch
33% of 3 decks +33% synergy
Brokers Confluence
33% of 3 decks +33% synergy
Generous Gift
33% of 3 decks +21% synergy
Swords to Plowshares
33% of 3 decks +5% synergy
Sprout Swarm
20% of 5 decks +20% synergy
Vastwood Fortification
20% of 5 decks +20% synergy
Grim Affliction
20% of 5 decks +20% synergy
Fuel for the Cause
20% of 5 decks +20% synergy
Arachnogenesis
20% of 5 decks +19% synergy
Inscription of Abundance
20% of 5 decks +19% synergy
Silkguard
20% of 5 decks +19% synergy
Infectious Bite
20% of 5 decks +19% synergy
Khalni Ambush
20% of 5 decks +19% synergy
Gaea's Gift
20% of 5 decks +18% synergy
Snakeskin Veil
20% of 5 decks +18% synergy
Aetherize
20% of 5 decks +17% synergy
Tyvar's Stand
20% of 5 decks +17% synergy
Putrefy
20% of 5 decks +17% synergy
Inspiring Call
20% of 5 decks +17% synergy
Krosan Grip
20% of 5 decks +16% synergy
Reality Shift
20% of 5 decks +16% synergy
Harrow
20% of 5 decks +15% synergy
Deadly Rollick
20% of 5 decks +15% synergy
Pongify
20% of 5 decks +14% synergy
Assassin's Trophy
20% of 5 decks +14% synergy
Arcane Denial
20% of 5 decks +11% synergy
Sorceries
Tezzeret's Gambit
60% of 5 decks +58% synergy
Unnatural Restoration
60% of 5 decks +58% synergy
Kodama's Reach
60% of 5 decks +45% synergy
Contest of Claws
50% of 2 decks +49% synergy
Saproling Symbiosis
40% of 5 decks +40% synergy
Farseek
40% of 5 decks +24% synergy
Cultivate
40% of 5 decks +18% synergy
Cleansing Meditation
33% of 3 decks +33% synergy
Rout
33% of 3 decks +33% synergy
Cleansing Nova
33% of 3 decks +31% synergy
Austere Command
33% of 3 decks +27% synergy
Death Mutation
20% of 5 decks +20% synergy
Morbid Bloom
20% of 5 decks +20% synergy
Aether Mutation
20% of 5 decks +20% synergy
Cruel Tutor
20% of 5 decks +20% synergy
Primal Growth
20% of 5 decks +20% synergy
Carnivorous Canopy
20% of 5 decks +20% synergy
Smell Fear
20% of 5 decks +19% synergy
Clone Legion
20% of 5 decks +19% synergy
Soul's Majesty
20% of 5 decks +19% synergy
Contentious Plan
20% of 5 decks +19% synergy
Titania's Command
20% of 5 decks +19% synergy
Phyresis Outbreak
20% of 5 decks +19% synergy
Neoform
20% of 5 decks +19% synergy
Thirsting Roots
20% of 5 decks +19% synergy
Drown in Ichor
20% of 5 decks +19% synergy
Infectious Inquiry
20% of 5 decks +19% synergy
In Garruk's Wake
20% of 5 decks +18% synergy
Diabolic Tutor
20% of 5 decks +17% synergy
Damnation
20% of 5 decks +16% synergy
Rishkar's Expertise
20% of 5 decks +15% synergy
Victimize
20% of 5 decks +14% synergy
Toxic Deluge
20% of 5 decks +11% synergy
Nature's Lore
20% of 5 decks +5% synergy
Utility Artifacts
Esoteric Duplicator
100% of 1 decks +100% synergy
Contagion Engine
40% of 5 decks +39% synergy
Phyrexian Altar
40% of 5 decks +36% synergy
Norn's Wellspring
33% of 3 decks +33% synergy
Spawning Pit
20% of 5 decks +20% synergy
Thornbite Staff
20% of 5 decks +19% synergy
Ichormoon Gauntlet
20% of 5 decks +19% synergy
Eldrazi Monument
20% of 5 decks +19% synergy
Moonsilver Key
20% of 5 decks +18% synergy
Skullclamp
20% of 5 decks +7% synergy
Enchantments
Fungal Plots
60% of 5 decks +60% synergy
Genesis of the Daleks
50% of 2 decks +50% synergy
Fungal Bloom
40% of 5 decks +40% synergy
Sporogenesis
40% of 5 decks +40% synergy
Necrogenesis
40% of 5 decks +40% synergy
Paradox Haze
40% of 5 decks +39% synergy
Parallel Lives
40% of 5 decks +37% synergy
Parallax Wave
33% of 3 decks +33% synergy
Tocasia's Welcome
33% of 3 decks +31% synergy
Anointed Procession
33% of 3 decks +29% synergy
Rite of Belzenlok
20% of 5 decks +20% synergy
Golgari Germination
20% of 5 decks +20% synergy
Druids' Repository
20% of 5 decks +20% synergy
The Weatherseed Treaty
20% of 5 decks +20% synergy
Fecundity
20% of 5 decks +20% synergy
Bred for the Hunt
20% of 5 decks +19% synergy
Master Chef
20% of 5 decks +19% synergy
Intruder Alarm
20% of 5 decks +19% synergy
Inexorable Tide
20% of 5 decks +19% synergy
Curiosity
20% of 5 decks +18% synergy
Phyrexian Reclamation
20% of 5 decks +18% synergy
Moldervine Reclamation
20% of 5 decks +18% synergy
Growing Rites of Itlimoc
20% of 5 decks +17% synergy
Reflections of Littjara
20% of 5 decks +17% synergy
Doubling Season
20% of 5 decks +16% synergy
Mystic Remora
20% of 5 decks +11% synergy
Planeswalkers
Oko, the Ringleader
50% of 2 decks +50% synergy
Kaya, Intangible Slayer
33% of 3 decks +33% synergy
The Wanderer
33% of 3 decks +33% synergy
Arlinn, Voice of the Pack
20% of 5 decks +20% synergy
Garruk, Cursed Huntsman
20% of 5 decks +20% synergy
Tyvar, Jubilant Brawler
20% of 5 decks +19% synergy
Ashiok, Dream Render
20% of 5 decks +19% synergy
Utility Lands
Restless Reef
50% of 2 decks +49% synergy
Karn's Bastion
40% of 5 decks +35% synergy
Vitu-Ghazi, the City-Tree
33% of 3 decks +33% synergy
Arena
20% of 5 decks +20% synergy
Dreadship Reef
20% of 5 decks +20% synergy
Oran-Rief, the Vastwood
20% of 5 decks +18% synergy
Field of the Dead
20% of 5 decks +16% synergy
Rogue's Passage
20% of 5 decks +1% synergy
Reliquary Tower
20% of 5 decks -9% synergy
Mana Artifacts
Arcane Signet
60% of 5 decks -11% synergy
Sol Ring
60% of 5 decks -24% synergy
Replicating Ring
40% of 5 decks +38% synergy
Everflowing Chalice
40% of 5 decks +35% synergy
Commander's Sphere
40% of 5 decks +24% synergy
Fellwar Stone
40% of 5 decks +19% synergy
Phyrexian Atlas
25% of 4 decks +25% synergy
Gemstone Array
20% of 5 decks +20% synergy
Pentad Prism
20% of 5 decks +20% synergy
Astral Cornucopia
20% of 5 decks +19% synergy
Staff of Compleation
20% of 5 decks +18% synergy
Golgari Signet
20% of 5 decks +17% synergy
Chromatic Lantern
20% of 5 decks +10% synergy
Lands
Command Tower
80% of 5 decks +6% synergy
Sandsteppe Citadel
67% of 3 decks +64% synergy
Seaside Citadel
67% of 3 decks +64% synergy
Arcane Sanctum
67% of 3 decks +63% synergy
Sea of Clouds
67% of 3 decks +61% synergy
Sunken Citadel
50% of 2 decks +50% synergy
Ice Tunnel
40% of 5 decks +39% synergy
Opulent Palace
40% of 5 decks +37% synergy
Undergrowth Stadium
40% of 5 decks +34% synergy
Exotic Orchard
40% of 5 decks +5% synergy
Vivid Meadow
33% of 3 decks +33% synergy
Glacial Floodplain
33% of 3 decks +33% synergy
Snowfield Sinkhole
33% of 3 decks +33% synergy
Arctic Treeline
33% of 3 decks +32% synergy
Brushland
33% of 3 decks +30% synergy
Indatha Triome
33% of 3 decks +30% synergy
Raffine's Tower
33% of 3 decks +30% synergy
Adarkar Wastes
33% of 3 decks +30% synergy
Spara's Headquarters
33% of 3 decks +30% synergy
Bountiful Promenade
33% of 3 decks +28% synergy
Vault of Champions
33% of 3 decks +27% synergy
Caves of Koilos
33% of 3 decks +27% synergy
Prairie Stream
33% of 3 decks +26% synergy
Temple Garden
33% of 3 decks +24% synergy
Hallowed Fountain
33% of 3 decks +24% synergy
Godless Shrine
33% of 3 decks +24% synergy
Rootwater Depths
20% of 5 decks +20% synergy
Mirrodin's Core
20% of 5 decks +20% synergy
Vivid Marsh
20% of 5 decks +20% synergy
Vivid Creek
20% of 5 decks +19% synergy
Vivid Grove
20% of 5 decks +19% synergy
Thriving Grove
20% of 5 decks +19% synergy
Woodland Chasm
20% of 5 decks +19% synergy
Thriving Moor
20% of 5 decks +19% synergy
Mirrex
20% of 5 decks +19% synergy
Rimewood Falls
20% of 5 decks +19% synergy
Thriving Isle
20% of 5 decks +19% synergy
Mistvault Bridge
20% of 5 decks +19% synergy
Fetid Pools
20% of 5 decks +19% synergy
Simic Guildgate
20% of 5 decks +19% synergy
Tangled Islet
20% of 5 decks +18% synergy
Haunted Mire
20% of 5 decks +18% synergy
Barkchannel Pathway
20% of 5 decks +18% synergy
Clearwater Pathway
20% of 5 decks +17% synergy
Zagoth Triome
20% of 5 decks +17% synergy
Temple of Deceit
20% of 5 decks +16% synergy
Underground River
20% of 5 decks +15% synergy
Llanowar Wastes
20% of 5 decks +15% synergy
Reflecting Pool
20% of 5 decks +14% synergy
Yavimaya Coast
20% of 5 decks +14% synergy