Pir, Imaginative Rascal
Sporoloth Ancient
Tainted Observer
Ashnod's Altar

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
You control a creature with at least three spore counters on it.

   Steps

How does this combo work?
1
Activate a creature you control by removing two spore counters from it, creating a 1/1 Saproling creature token.
2
The Saproling enters the battlefield, triggering Tainted Observer.
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 two spore counters on any creature you control.
5
Repeat.

   Results

What do I get from this combo?
Infinite death triggers
Infinite ETB
Infinite LTB
Infinite proliferate
Infinite sacrifice triggers
Xavier Sal, Infested Captain
0.1%inclusion6 decks7.79K decks
Atraxa, Praetors' Voice
0.0%inclusion3 decks38.3K decks
Pir, Imaginative Rascal // Toothy, Imaginary Friend
0.1%inclusion2 decks2.93K decks
Adrix and Nev, Twincasters
0.0%inclusion1 decks7.75K decks
Rubinia Soulsinger
0.1%inclusion1 decks880 decks
High Synergy Cards
Deathspore Thallid
100%inclusion9 decks9 decks
100%synergy
Slimefoot, the Stowaway
100%inclusion9 decks9 decks
99%synergy
Nemata, Primeval Warden
89%inclusion8 decks9 decks
87%synergy
Winding Constrictor
89%inclusion8 decks9 decks
85%synergy
Thelon of Havenwood
78%inclusion7 decks9 decks
77%synergy
Vitaspore Thallid
77%inclusion10 decks13 decks
77%synergy
Sporesower Thallid
77%inclusion10 decks13 decks
77%synergy
Psychotrope Thallid
77%inclusion10 decks13 decks
76%synergy
Utopia Mycon
77%inclusion10 decks13 decks
76%synergy
Mycoloth
77%inclusion10 decks13 decks
75%synergy
Top Cards
Doubling Season
77%inclusion10 decks13 decks
67%synergy
Thallid Germinator
69%inclusion9 decks13 decks
69%synergy
Thallid
69%inclusion9 decks13 decks
69%synergy
Tekuthal, Inquiry Dominus
69%inclusion9 decks13 decks
67%synergy
Evolution Sage
69%inclusion9 decks13 decks
63%synergy
Elvish Farmer
62%inclusion8 decks13 decks
61%synergy
Thallid Shell-Dweller
62%inclusion8 decks13 decks
61%synergy
Tendershoot Dryad
62%inclusion8 decks13 decks
59%synergy
Farseek
62%inclusion8 decks13 decks
26%synergy
Zulaport Cutthroat
56%inclusion5 decks9 decks
47%synergy
Game Changers
Cyclonic Rift
23%inclusion3 decks13 decks
0%synergy
Creatures
Mycologist
75%inclusion3 decks4 decks
75%synergy
Blood Artist
56%inclusion5 decks9 decks
44%synergy
Thallid Devourer
54%inclusion7 decks13 decks
54%synergy
Spore Flower
54%inclusion7 decks13 decks
54%synergy
Ezuri, Stalker of Spheres
54%inclusion7 decks13 decks
51%synergy
Savage Thallid
46%inclusion6 decks13 decks
46%synergy
Mirkwood Bats
44%inclusion4 decks9 decks
35%synergy
Plaguemaw Beast
38%inclusion5 decks13 decks
38%synergy
Nemata, Grove Guardian
38%inclusion5 decks13 decks
38%synergy
Danny Pink
38%inclusion5 decks13 decks
37%synergy
Brightcap Badger
38%inclusion3 decks8 decks
37%synergy
Dreamtide Whale
38%inclusion3 decks8 decks
35%synergy
Scheming Aspirant
33%inclusion3 decks9 decks
33%synergy
Yawgmoth, Thran Physician
33%inclusion3 decks9 decks
30%synergy
Pitiless Plunderer
33%inclusion3 decks9 decks
25%synergy
Sporecrown Thallid
31%inclusion4 decks13 decks
30%synergy
Vorinclex, Monstrous Raider
31%inclusion4 decks13 decks
28%synergy
Cankerbloom
31%inclusion4 decks13 decks
26%synergy
Thorn Thallid
23%inclusion3 decks13 decks
23%synergy
Verdeloth the Ancient
23%inclusion3 decks13 decks
23%synergy
Vorel of the Hull Clade
23%inclusion3 decks13 decks
21%synergy
Thrummingbird
23%inclusion3 decks13 decks
20%synergy
Instants
Assassin's Trophy
56%inclusion5 decks9 decks
25%synergy
Sprout Swarm
54%inclusion7 decks13 decks
53%synergy
Counterspell
54%inclusion7 decks13 decks
12%synergy
Beast Within
46%inclusion6 decks13 decks
11%synergy
Ripples of Potential
38%inclusion5 decks13 decks
36%synergy
Steady Progress
31%inclusion4 decks13 decks
30%synergy
Reject Imperfection
31%inclusion4 decks13 decks
30%synergy
Heroic Intervention
31%inclusion4 decks13 decks
0%synergy
Mutational Advantage
27%inclusion3 decks11 decks
24%synergy
Fuel for the Cause
23%inclusion3 decks13 decks
23%synergy
Serum Snare
23%inclusion3 decks13 decks
22%synergy
Simic Charm
23%inclusion3 decks13 decks
20%synergy
Arcane Denial
23%inclusion3 decks13 decks
3%synergy
Sorceries
Three Visits
38%inclusion5 decks13 decks
14%synergy
Tezzeret's Gambit
31%inclusion4 decks13 decks
27%synergy
Nature's Lore
31%inclusion4 decks13 decks
-1%synergy
Rampant Growth
31%inclusion4 decks13 decks
-3%synergy
Cultivate
31%inclusion4 decks13 decks
-12%synergy
Carnivorous Canopy
23%inclusion3 decks13 decks
22%synergy
Saproling Symbiosis
23%inclusion3 decks13 decks
22%synergy
Unnatural Restoration
23%inclusion3 decks13 decks
21%synergy
Utility Artifacts
Skullclamp
46%inclusion6 decks13 decks
35%synergy
Lightning Greaves
31%inclusion4 decks13 decks
6%synergy
Contagion Engine
23%inclusion3 decks13 decks
22%synergy
Swiftfoot Boots
23%inclusion3 decks13 decks
-4%synergy
Enchantments
Paradox Haze
46%inclusion6 decks13 decks
45%synergy
Fungal Plots
38%inclusion5 decks13 decks
38%synergy
Fungal Bloom
31%inclusion4 decks13 decks
31%synergy
Sporogenesis
23%inclusion3 decks13 decks
23%synergy
Intruder Alarm
23%inclusion3 decks13 decks
21%synergy
Inexorable Tide
23%inclusion3 decks13 decks
20%synergy
Mystic Remora
23%inclusion3 decks13 decks
7%synergy
Utility Lands
Nesting Grounds
23%inclusion3 decks13 decks
21%synergy
Karn's Bastion
23%inclusion3 decks13 decks
18%synergy
Yavimaya, Cradle of Growth
23%inclusion3 decks13 decks
14%synergy
Otawara, Soaring City
23%inclusion3 decks13 decks
7%synergy
Boseiju, Who Endures
23%inclusion3 decks13 decks
4%synergy
Reliquary Tower
23%inclusion3 decks13 decks
-7%synergy
Mana Artifacts
Sol Ring
69%inclusion9 decks13 decks
-15%synergy
Arcane Signet
62%inclusion8 decks13 decks
-11%synergy
Astral Cornucopia
38%inclusion5 decks13 decks
37%synergy
Strixhaven Stadium
23%inclusion3 decks13 decks
23%synergy
Lands
Command Tower
85%inclusion11 decks13 decks
10%synergy
Spara's Headquarters
75%inclusion3 decks4 decks
47%synergy
Temple Garden
75%inclusion3 decks4 decks
36%synergy
Woodland Cemetery
67%inclusion6 decks9 decks
36%synergy
Yavimaya Coast
62%inclusion8 decks13 decks
34%synergy
Llanowar Wastes
56%inclusion5 decks9 decks
29%synergy
Zagoth Triome
56%inclusion5 decks9 decks
27%synergy
Exotic Orchard
54%inclusion7 decks13 decks
18%synergy
Breeding Pool
54%inclusion7 decks13 decks
13%synergy
Hinterland Harbor
46%inclusion6 decks13 decks
14%synergy
Overgrown Tomb
44%inclusion4 decks9 decks
4%synergy
Watery Grave
44%inclusion4 decks9 decks
3%synergy
Dreamroot Cascade
38%inclusion5 decks13 decks
17%synergy
Darkbore Pathway
33%inclusion3 decks9 decks
26%synergy
Deathcap Glade
33%inclusion3 decks9 decks
20%synergy
Underground River
33%inclusion3 decks9 decks
11%synergy
Morphic Pool
33%inclusion3 decks9 decks
9%synergy
Fabled Passage
31%inclusion4 decks13 decks
22%synergy
Rejuvenating Springs
31%inclusion4 decks13 decks
4%synergy
Verdant Catacombs
23%inclusion3 decks13 decks
12%synergy
Simic Growth Chamber
23%inclusion3 decks13 decks
5%synergy