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.

Atraxa, Praetors' Voice
0.01% of 35211 decks 3 decks
Xavier Sal, Infested Captain
0.05% of 4399 decks 2 decks
Volrath, the Shapestealer
0.04% of 2776 decks 1 decks
High Synergy Cards
Mycoloth
83% of 6 decks +81% synergy
Vitaspore Thallid
67% of 6 decks +66% synergy
Sporoloth Ancient
67% of 6 decks +66% synergy
Sporesower Thallid
67% of 6 decks +66% synergy
Psychotrope Thallid
67% of 6 decks +66% synergy
Deathspore Thallid
67% of 6 decks +66% synergy
Utopia Mycon
67% of 6 decks +66% synergy
Slimefoot, the Stowaway
67% of 6 decks +65% synergy
Tendershoot Dryad
67% of 6 decks +64% synergy
Nemata, Primeval Warden
67% of 6 decks +64% synergy
Top Cards
Rampant Growth
83% of 6 decks +49% synergy
Tekuthal, Inquiry Dominus
67% of 6 decks +64% synergy
Tezzeret's Gambit
67% of 6 decks +63% synergy
Cankerbloom
67% of 6 decks +60% synergy
Kodama's Reach
67% of 6 decks +35% synergy
Creatures
Pallid Mycoderm
100% of 3 decks +100% synergy
Dreamtide Whale
100% of 1 decks +96% synergy
Ghave, Guru of Spores
67% of 3 decks +66% synergy
Grateful Apparition
67% of 3 decks +65% synergy
Lae'zel, Vlaakith's Champion
67% of 3 decks +63% synergy
Spore Flower
50% of 6 decks +50% synergy
Savage Thallid
50% of 6 decks +50% synergy
Thallid
50% of 6 decks +50% synergy
Thrummingbird
50% of 6 decks +46% synergy
Ezuri, Stalker of Spheres
50% of 6 decks +46% synergy
Evolution Sage
50% of 6 decks +43% synergy
Scheming Aspirant
40% of 5 decks +39% synergy
Mycologist
33% of 3 decks +33% synergy
Elvish Farmer
33% of 6 decks +33% synergy
Thallid Devourer
33% of 6 decks +33% synergy
Myconid Spore Tender
33% of 6 decks +33% synergy
Nemata, Grove Guardian
33% of 6 decks +33% synergy
Thallid Germinator
33% of 6 decks +33% synergy
Thallid Shell-Dweller
33% of 6 decks +33% synergy
Sporecrown Thallid
33% of 6 decks +33% synergy
Undercellar Myconid
33% of 6 decks +33% synergy
Merfolk Skydiver
33% of 6 decks +32% synergy
Xavier Sal, Infested Captain
33% of 3 decks +32% synergy
Danny Pink
33% of 3 decks +32% synergy
Sphinx of the Second Sun
33% of 6 decks +32% synergy
Winding Constrictor
33% of 6 decks +29% synergy
Adrix and Nev, Twincasters
33% of 6 decks +28% synergy
Welcoming Vampire
33% of 3 decks +28% synergy
Mentor of the Meek
33% of 3 decks +27% synergy
Cruel Celebrant
33% of 3 decks +25% synergy
Mondrak, Glory Dominus
33% of 3 decks +24% synergy
Elas il-Kor, Sadistic Pilgrim
33% of 3 decks +22% synergy
Sakura-Tribe Elder
33% of 6 decks +15% synergy
Ichorspit Basilisk
20% of 5 decks +19% synergy
Locust Swarm
17% of 6 decks +17% synergy
Mindbender Spores
17% of 6 decks +17% synergy
Thorn Thallid
17% of 6 decks +17% synergy
Will-o'-the-Wisp
17% of 6 decks +17% synergy
Gilder Bairn
17% of 6 decks +16% synergy
Thallid Soothsayer
17% of 6 decks +16% synergy
Sun Quan, Lord of Wu
17% of 6 decks +16% synergy
Hell's Caretaker
17% of 6 decks +16% synergy
Hand of the Praetors
17% of 6 decks +16% synergy
Verdeloth the Ancient
17% of 6 decks +16% synergy
Thelon of Havenwood
17% of 6 decks +16% synergy
Experiment Kraj
17% of 6 decks +16% synergy
Venser, Corpse Puppet
17% of 6 decks +16% synergy
Wild Beastmaster
17% of 6 decks +16% synergy
Korozda Guildmage
17% of 6 decks +16% synergy
Generous Patron
17% of 6 decks +16% synergy
Instants
Aura Mutation
100% of 3 decks +96% synergy
Mutational Advantage
67% of 3 decks +61% synergy
Beast Within
50% of 6 decks +11% synergy
Counterspell
50% of 6 decks +7% synergy
Ready // Willing
33% of 3 decks +33% synergy
Fungal Rebirth
33% of 6 decks +33% synergy
For the Ancestors
33% of 3 decks +32% synergy
Whisper of the Dross
33% of 6 decks +32% synergy
Deny the Witch
33% of 3 decks +32% synergy
Brokers Confluence
33% of 3 decks +31% synergy
See Double
33% of 3 decks +31% synergy
Gaea's Gift
33% of 6 decks +30% synergy
Ripples of Potential
33% of 3 decks +30% synergy
Snakeskin Veil
33% of 6 decks +29% synergy
Generous Gift
33% of 3 decks +8% synergy
Cyclonic Rift
33% of 6 decks +5% synergy
Assassin's Trophy
33% of 6 decks +3% synergy
Swords to Plowshares
33% of 3 decks -29% synergy
Sprout Swarm
17% of 6 decks +16% synergy
Vastwood Fortification
17% of 6 decks +16% synergy
Grim Affliction
17% of 6 decks +16% synergy
Fuel for the Cause
17% of 6 decks +16% synergy
Mystic Reflection
17% of 6 decks +15% synergy
Silkguard
17% of 6 decks +15% synergy
Inscription of Abundance
17% of 6 decks +15% synergy
Arachnogenesis
17% of 6 decks +15% synergy
Infectious Bite
17% of 6 decks +14% synergy
Khalni Ambush
17% of 6 decks +14% synergy
Tyvar's Stand
17% of 6 decks +11% synergy
Aetherize
17% of 6 decks +11% synergy
Golgari Charm
17% of 6 decks +11% synergy
Inspiring Call
17% of 6 decks +9% synergy
Krosan Grip
17% of 6 decks +9% synergy
Reality Shift
17% of 6 decks +8% synergy
Harrow
17% of 6 decks +7% synergy
Deadly Rollick
17% of 6 decks +6% synergy
Pongify
17% of 6 decks +5% synergy
Putrefy
17% of 6 decks +1% synergy
Arcane Denial
17% of 6 decks -3% synergy
Dark Ritual
17% of 6 decks -6% synergy
Negate
17% of 6 decks -6% synergy
Sorceries
Unnatural Restoration
50% of 6 decks +46% synergy
Cleansing Meditation
33% of 3 decks +33% synergy
Saproling Symbiosis
33% of 6 decks +33% synergy
Rout
33% of 3 decks +33% synergy
Contest of Claws
33% of 3 decks +32% synergy
Cleansing Nova
33% of 3 decks +29% synergy
Austere Command
33% of 3 decks +21% synergy
Toxic Deluge
33% of 6 decks +16% synergy
Nature's Lore
33% of 6 decks +1% synergy
Farseek
33% of 6 decks -1% synergy
Cultivate
33% of 6 decks -13% synergy
Death Mutation
17% of 6 decks +17% synergy
Morbid Bloom
17% of 6 decks +17% synergy
Aether Mutation
17% of 6 decks +17% synergy
Cruel Tutor
17% of 6 decks +16% synergy
Replication Technique
17% of 6 decks +16% synergy
Primal Growth
17% of 6 decks +16% synergy
Carnivorous Canopy
17% of 6 decks +16% synergy
Smell Fear
17% of 6 decks +15% synergy
Clone Legion
17% of 6 decks +15% synergy
Soul's Majesty
17% of 6 decks +15% synergy
Titania's Command
17% of 6 decks +15% synergy
Contentious Plan
17% of 6 decks +15% synergy
Phyresis Outbreak
17% of 6 decks +15% synergy
Overrun
17% of 6 decks +15% synergy
Thirsting Roots
17% of 6 decks +14% synergy
Drown in Ichor
17% of 6 decks +14% synergy
Infectious Inquiry
17% of 6 decks +14% synergy
In Garruk's Wake
17% of 6 decks +13% synergy
Neoform
17% of 6 decks +11% synergy
Diabolic Tutor
17% of 6 decks +10% synergy
Damnation
17% of 6 decks +9% synergy
Shamanic Revelation
17% of 6 decks +7% synergy
Rishkar's Expertise
17% of 6 decks +6% synergy
Victimize
17% of 6 decks +5% synergy
Utility Artifacts
Esoteric Duplicator
50% of 2 decks +49% synergy
Norn's Wellspring
33% of 3 decks +32% synergy
Contagion Engine
33% of 6 decks +32% synergy
Phyrexian Altar
33% of 6 decks +29% synergy
Skullclamp
33% of 6 decks +21% synergy
Druidic Satchel
17% of 6 decks +16% synergy
Spawning Pit
17% of 6 decks +16% synergy
Thornbite Staff
17% of 6 decks +16% synergy
Eldrazi Monument
17% of 6 decks +15% synergy
Moonsilver Key
17% of 6 decks +15% synergy
Ichormoon Gauntlet
17% of 6 decks +15% synergy
Enchantments
Fungal Plots
50% of 6 decks +49% synergy
Fungal Bloom
33% of 6 decks +33% synergy
Sporogenesis
33% of 6 decks +33% synergy
Parallax Wave
33% of 3 decks +33% synergy
Genesis of the Daleks
33% of 3 decks +33% synergy
Necrogenesis
33% of 6 decks +32% synergy
Paradox Haze
33% of 6 decks +32% synergy
Intruder Alarm
33% of 6 decks +31% synergy
Tocasia's Welcome
33% of 3 decks +29% synergy
Reflections of Littjara
33% of 6 decks +28% synergy
Growing Rites of Itlimoc
33% of 6 decks +28% synergy
Parallel Lives
33% of 6 decks +26% synergy
Insidious Roots
33% of 3 decks +25% synergy
Anointed Procession
33% of 3 decks +24% synergy
Mystic Remora
33% of 6 decks +15% synergy
Rite of Belzenlok
17% of 6 decks +17% synergy
Druids' Repository
17% of 6 decks +16% synergy
The Weatherseed Treaty
17% of 6 decks +16% synergy
Fecundity
17% of 6 decks +16% synergy
Pemmin's Aura
17% of 6 decks +15% synergy
Golgari Germination
17% of 6 decks +15% synergy
Master Chef
17% of 6 decks +15% synergy
Freed from the Real
17% of 6 decks +15% synergy
Bred for the Hunt
17% of 6 decks +14% synergy
Inexorable Tide
17% of 6 decks +14% synergy
Primal Vigor
17% of 6 decks +14% synergy
Curiosity
17% of 6 decks +13% synergy
Phyrexian Reclamation
17% of 6 decks +13% synergy
Beastmaster Ascension
17% of 6 decks +11% synergy
Doubling Season
17% of 6 decks +8% synergy
Moldervine Reclamation
17% of 6 decks +7% synergy
Wild Growth
17% of 6 decks +6% synergy
Planeswalkers
The Wanderer
33% of 3 decks +32% synergy
Oko, the Ringleader
33% of 3 decks +32% synergy
Kaya, Intangible Slayer
33% of 3 decks +32% synergy
Arlinn, Voice of the Pack
17% of 6 decks +16% synergy
Nissa, Voice of Zendikar
17% of 6 decks +16% synergy
Garruk, Cursed Huntsman
17% of 6 decks +14% synergy
Vraska, Golgari Queen
17% of 6 decks +14% synergy
Vraska, Betrayal's Sting
17% of 6 decks +13% synergy
Ashiok, Dream Render
17% of 6 decks +12% synergy
Tyvar, Jubilant Brawler
17% of 6 decks +12% synergy
Utility Lands
Three Tree City
100% of 1 decks +90% synergy
Karn's Bastion
50% of 6 decks +45% synergy
Vitu-Ghazi, the City-Tree
33% of 3 decks +32% synergy
Restless Reef
33% of 3 decks +29% synergy
Arena
17% of 6 decks +17% synergy
Dreadship Reef
17% of 6 decks +16% synergy
Field of the Dead
17% of 6 decks +13% synergy
Oran-Rief, the Vastwood
17% of 6 decks +12% synergy
Rogue's Passage
17% of 6 decks -3% synergy
Reliquary Tower
17% of 6 decks -13% synergy
Mana Artifacts
Arcane Signet
67% of 6 decks -5% synergy
Sol Ring
67% of 6 decks -18% synergy
Replicating Ring
50% of 6 decks +48% synergy
Everflowing Chalice
50% of 6 decks +45% synergy
Commander's Sphere
33% of 6 decks +18% synergy
Fellwar Stone
33% of 6 decks +12% synergy
Phyrexian Atlas
20% of 5 decks +20% synergy
Gemstone Array
17% of 6 decks +17% synergy
Pentad Prism
17% of 6 decks +16% synergy
Astral Cornucopia
17% of 6 decks +15% synergy
Staff of Compleation
17% of 6 decks +15% synergy
Chromatic Lantern
17% of 6 decks +7% synergy
Golgari Signet
17% of 6 decks +4% synergy
Lands
Command Tower
83% of 6 decks +9% synergy
Sandsteppe Citadel
67% of 3 decks +41% synergy
Seaside Citadel
67% of 3 decks +41% synergy
Sea of Clouds
67% of 3 decks +41% synergy
Arcane Sanctum
67% of 3 decks +39% synergy
Opulent Palace
50% of 6 decks +23% synergy
Exotic Orchard
50% of 6 decks +14% synergy
Sunken Citadel
33% of 3 decks +33% synergy
Vivid Marsh
33% of 6 decks +33% synergy
Vivid Meadow
33% of 3 decks +32% synergy
Vivid Creek
33% of 6 decks +32% synergy
Vivid Grove
33% of 6 decks +32% synergy
Ice Tunnel
33% of 6 decks +31% synergy
Snowfield Sinkhole
33% of 3 decks +30% synergy
Glacial Floodplain
33% of 3 decks +30% synergy
Arctic Treeline
33% of 3 decks +30% synergy
Tangled Islet
33% of 6 decks +26% synergy
Brushland
33% of 3 decks +17% synergy
Adarkar Wastes
33% of 3 decks +16% synergy
Bountiful Promenade
33% of 3 decks +9% synergy
Llanowar Wastes
33% of 6 decks +8% synergy
Vault of Champions
33% of 3 decks +8% synergy
Undergrowth Stadium
33% of 6 decks +7% synergy
Yavimaya Coast
33% of 6 decks +7% synergy
Raffine's Tower
33% of 3 decks +5% synergy
Caves of Koilos
33% of 3 decks +5% synergy
Rejuvenating Springs
33% of 6 decks +5% synergy
Indatha Triome
33% of 3 decks +2% synergy
Spara's Headquarters
33% of 3 decks +1% synergy
Prairie Stream
33% of 3 decks -0% synergy
Temple Garden
33% of 3 decks -7% synergy
Godless Shrine
33% of 3 decks -7% synergy
Hallowed Fountain
33% of 3 decks -8% synergy
Rootwater Depths
17% of 6 decks +17% synergy
Mirrodin's Core
17% of 6 decks +17% synergy
Tendo Ice Bridge
17% of 6 decks +17% synergy
Mirrex
17% of 6 decks +16% synergy
Thriving Moor
17% of 6 decks +14% synergy
Thriving Grove
17% of 6 decks +14% synergy
Thriving Isle
17% of 6 decks +14% synergy
Mistvault Bridge
17% of 6 decks +12% synergy
Woodland Chasm
17% of 6 decks +12% synergy
Unclaimed Territory
17% of 6 decks +12% synergy
Rimewood Falls
17% of 6 decks +11% synergy
Reflecting Pool
17% of 6 decks +11% synergy
Fetid Pools
17% of 6 decks +11% synergy
Simic Guildgate
17% of 6 decks +10% synergy
Mana Confluence
17% of 6 decks +9% synergy
Haunted Mire
17% of 6 decks +9% synergy
Jungle Hollow
17% of 6 decks +8% synergy