Agatha's Soul Cauldron
Grist, the Hunger Tide
Cathars' Crusade
1

   Prerequisites

What do I need to start this combo?
Grist in exile (Grist exiled by Agatha's Soul Cauldron in exile).
Agatha's Soul Cauldron and Cathars' Crusade on the battlefield.
You control a creature with a +1/+1 counter on it.

   Steps

How does this combo work?
1
Activate a creature you control using Grist's first loyalty ability by putting a loyalty counter on it, causing you to create a 1/1 Insect creature token and mill a card, and then put a loyalty counter on the creature and repeat the process if the card was an Insect.
2
When the Insect enters the battlefield, Cathars' Crusade triggers, putting a +1/+1 counter on each creature you control and causing the Insect token to gain Grist's abilities.
3
Repeat from step 1 using the Insect token instead.

   Results

What do I get from this combo?
Infinite +1/+1 counters
Infinite creature tokens
Infinite ETB
Infinite self-mill
Tayam, Luminous Enigma
0.12% of 5747 decks 7 decks
Ghave, Guru of Spores
0.07% of 5785 decks 4 decks
Kenrith, the Returned King
0.01% of 20987 decks 2 decks
Reyhan, Last of the Abzan // Yoshimaru, Ever Faithful
0.12% of 1653 decks 2 decks
Atraxa, Praetors' Voice
0.01% of 30544 decks 2 decks
Nethroi, Apex of Death
0.04% of 5397 decks 2 decks
The Necrobloom
0.01% of 14458 decks 2 decks
Ishai, Ojutai Dragonspeaker // Reyhan, Last of the Abzan
0.14% of 1481 decks 2 decks
Tazri, Stalwart Survivor
0.05% of 1833 decks 1 decks
Anafenza, the Foremost
0.10% of 984 decks 1 decks
High Synergy Cards
Master Biomancer
57% of 7 decks +54% synergy
Devoted Druid
44% of 25 decks +41% synergy
Yavimaya, Cradle of Growth
48% of 25 decks +39% synergy
Hardened Scales
48% of 25 decks +39% synergy
Winding Constrictor
40% of 25 decks +36% synergy
Walking Ballista
36% of 25 decks +34% synergy
Yawgmoth, Thran Physician
36% of 25 decks +33% synergy
Birds of Paradise
60% of 25 decks +33% synergy
Esper Sentinel
52% of 25 decks +32% synergy
Bloom Tender
40% of 25 decks +32% synergy
Top Cards
Swords to Plowshares
64% of 25 decks +1% synergy
Six
36% of 11 decks +31% synergy
Rishkar, Peema Renegade
36% of 25 decks +32% synergy
Ozolith, the Shattered Spire
36% of 25 decks +31% synergy
Ashnod's Altar
36% of 25 decks +29% synergy
Eternal Witness
36% of 25 decks +16% synergy
Assassin's Trophy
36% of 25 decks +6% synergy
Luminous Broodmoth
32% of 25 decks +30% synergy
The Ozolith
32% of 25 decks +29% synergy
Carrion Feeder
32% of 25 decks +27% synergy
Game Changers
Demonic Tutor
48% of 25 decks +27% synergy
Enlightened Tutor
44% of 25 decks +27% synergy
Vampiric Tutor
32% of 25 decks +15% synergy
Ancient Tomb
24% of 25 decks +14% synergy
Field of the Dead
20% of 25 decks +17% synergy
Gaea's Cradle
20% of 25 decks +14% synergy
Aura Shards
20% of 25 decks +12% synergy
Worldly Tutor
20% of 25 decks +7% synergy
Survival of the Fittest
12% of 25 decks +10% synergy
Opposition Agent
12% of 25 decks +5% synergy
Creatures
Agatha of the Vile Cauldron
100% of 3 decks +99% synergy
Evolution Sage
32% of 25 decks +26% synergy
Champion of Lambholt
32% of 25 decks +25% synergy
Kutzil, Malamet Exemplar
32% of 22 decks +17% synergy
Wall of Roots
28% of 25 decks +27% synergy
Good-Fortune Unicorn
28% of 25 decks +25% synergy
Kami of Whispered Hopes
28% of 25 decks +21% synergy
Basking Broodscale
27% of 11 decks +26% synergy
Grist, Voracious Larva
27% of 11 decks +25% synergy
Warren Soultrader
27% of 11 decks +22% synergy
Wight of the Reliquary
25% of 12 decks +19% synergy
Arwen, Weaver of Hope
24% of 25 decks +22% synergy
Managorger Hydra
24% of 25 decks +20% synergy
Blood Artist
24% of 25 decks +12% synergy
Delighted Halfling
24% of 25 decks +12% synergy
Deathrite Shaman
24% of 25 decks +12% synergy
Llanowar Elves
24% of 25 decks +3% synergy
Young Wolf
20% of 25 decks +20% synergy
Mikaeus, the Lunarch
20% of 25 decks +18% synergy
Lae'zel, Vlaakith's Champion
20% of 25 decks +17% synergy
Spore Frog
20% of 25 decks +17% synergy
Skyclave Apparition
20% of 25 decks +17% synergy
Incubation Druid
20% of 25 decks +15% synergy
Dauthi Voidwalker
20% of 25 decks +13% synergy
Sakura-Tribe Elder
20% of 25 decks +2% synergy
Bristly Bill, Spine Sower
19% of 16 decks +15% synergy
Bartolomé del Presidio
18% of 22 decks +13% synergy
Cryptic Trilobite
16% of 25 decks +16% synergy
Geralf's Messenger
16% of 25 decks +16% synergy
Ghave, Guru of Spores
16% of 25 decks +15% synergy
Metallic Mimic
16% of 25 decks +15% synergy
Endurance
16% of 25 decks +14% synergy
Vorinclex, Monstrous Raider
16% of 25 decks +13% synergy
Conclave Mentor
16% of 25 decks +12% synergy
Plaguecrafter
16% of 25 decks +11% synergy
Corpsejack Menace
16% of 25 decks +11% synergy
Cankerbloom
16% of 25 decks +10% synergy
Wood Elves
16% of 25 decks +10% synergy
Cruel Celebrant
16% of 25 decks +8% synergy
Zulaport Cutthroat
16% of 25 decks +7% synergy
Reclamation Sage
16% of 25 decks +6% synergy
Elves of Deep Shadow
16% of 25 decks +6% synergy
Avacyn's Pilgrim
16% of 25 decks +2% synergy
Crystalline Crawler
12% of 25 decks +12% synergy
Pili-Pala
12% of 25 decks +12% synergy
Spike Feeder
12% of 25 decks +12% synergy
Polukranos, Unchained
12% of 25 decks +11% synergy
Utopia Mycon
12% of 25 decks +11% synergy
Pir, Imaginative Rascal
12% of 25 decks +11% synergy
Anafenza, Kin-Tree Spirit
12% of 25 decks +11% synergy
Instants
Path to Exile
32% of 25 decks -15% synergy
Chord of Calling
28% of 25 decks +22% synergy
Dark Ritual
20% of 25 decks -3% synergy
Abzan Charm
16% of 25 decks +11% synergy
Abrupt Decay
16% of 25 decks +6% synergy
Teferi's Protection
16% of 25 decks -3% synergy
Heroic Intervention
16% of 25 decks -14% synergy
Beast Within
16% of 25 decks -21% synergy
Entomb
12% of 25 decks +5% synergy
Inspiring Call
12% of 25 decks +4% synergy
Malakir Rebirth
12% of 25 decks +4% synergy
Crop Rotation
12% of 25 decks +2% synergy
Anguished Unmaking
12% of 25 decks -12% synergy
Generous Gift
12% of 25 decks -13% synergy
Sorceries
Eerie Ultimatum
32% of 25 decks +20% synergy
Nature's Lore
32% of 25 decks +0% synergy
Reanimate
24% of 25 decks +7% synergy
Three Visits
24% of 25 decks -0% synergy
Life from the Loam
20% of 25 decks +16% synergy
Toxic Deluge
20% of 25 decks +2% synergy
Farseek
20% of 25 decks -14% synergy
Damning Verdict
16% of 25 decks +14% synergy
Agadeem's Awakening
16% of 25 decks +13% synergy
Eldritch Evolution
16% of 25 decks +11% synergy
Green Sun's Zenith
16% of 25 decks +10% synergy
Culling Ritual
16% of 25 decks +5% synergy
Grim Tutor
12% of 25 decks +8% synergy
Damnation
12% of 25 decks +5% synergy
Finale of Devastation
12% of 25 decks +4% synergy
Bala Ged Recovery
12% of 25 decks +4% synergy
Explore
12% of 25 decks +3% synergy
Utility Artifacts
The Great Henge
32% of 25 decks +22% synergy
Altar of Dementia
28% of 25 decks +25% synergy
Skullclamp
28% of 25 decks +16% synergy
Phyrexian Altar
20% of 25 decks +16% synergy
Lightning Greaves
20% of 25 decks -5% synergy
Matzalantli, the Great Door
14% of 22 decks +12% synergy
Heartstone
12% of 25 decks +12% synergy
Jeweled Lotus
12% of 25 decks +8% synergy
Enchantments
Brokers Ascendancy
43% of 7 decks +36% synergy
Court of Garenbrig
28% of 25 decks +26% synergy
Tribute to the World Tree
28% of 25 decks +21% synergy
Doubling Season
28% of 25 decks +18% synergy
Ripples of Undeath
27% of 11 decks +23% synergy
Abzan Ascendancy
24% of 25 decks +22% synergy
Virtue of Loyalty
24% of 25 decks +22% synergy
Felidar Retreat
24% of 25 decks +17% synergy
Insidious Roots
24% of 17 decks +18% synergy
The Meathook Massacre
20% of 25 decks +15% synergy
Animate Dead
20% of 25 decks +11% synergy
Sylvan Library
20% of 25 decks +9% synergy
Black Market Connections
16% of 25 decks +5% synergy
Earthcraft
12% of 25 decks +11% synergy
Song of Freyalise
12% of 25 decks +11% synergy
Resourceful Defense
12% of 25 decks +11% synergy
Master Chef
12% of 25 decks +11% synergy
Tocasia's Welcome
12% of 25 decks +9% synergy
Branching Evolution
12% of 25 decks +6% synergy
Kenrith's Transformation
12% of 25 decks +6% synergy
Anointed Procession
12% of 25 decks +4% synergy
Smothering Tithe
12% of 25 decks -12% synergy
Planeswalkers
Tyvar, Jubilant Brawler
24% of 25 decks +20% synergy
Nissa, Voice of Zendikar
12% of 25 decks +11% synergy
Utility Lands
Boseiju, Who Endures
44% of 25 decks +25% synergy
Shifting Woodland
36% of 11 decks +30% synergy
Urborg, Tomb of Yawgmoth
36% of 25 decks +27% synergy
Takenuma, Abandoned Mire
32% of 25 decks +22% synergy
Phyrexian Tower
24% of 25 decks +15% synergy
Karn's Bastion
20% of 25 decks +15% synergy
Urza's Saga
20% of 25 decks +13% synergy
Eiganjo, Seat of the Empire
20% of 25 decks +12% synergy
Gavony Township
20% of 25 decks +11% synergy
Dryad Arbor
12% of 25 decks +8% synergy
Shizo, Death's Storehouse
12% of 25 decks +7% synergy
Oran-Rief, the Vastwood
12% of 25 decks +7% synergy
Minas Tirith
12% of 25 decks +5% synergy
Mana Artifacts
Sol Ring
84% of 25 decks -0% synergy
Arcane Signet
68% of 25 decks -4% synergy
Mana Crypt
16% of 25 decks +10% synergy
Fellwar Stone
16% of 25 decks -5% synergy
Chromatic Lantern
12% of 25 decks +3% synergy
Lands
Ketria Triome
100% of 3 decks +68% synergy
Sacred Foundry
100% of 3 decks +65% synergy
Blood Crypt
100% of 3 decks +62% synergy
Steam Vents
100% of 3 decks +62% synergy
Stomping Ground
100% of 3 decks +60% synergy
Temple Garden
88% of 25 decks +49% synergy
Overgrown Tomb
88% of 25 decks +46% synergy
Hallowed Fountain
86% of 7 decks +46% synergy
Watery Grave
86% of 7 decks +45% synergy
Breeding Pool
86% of 7 decks +45% synergy
Command Tower
84% of 25 decks +10% synergy
Godless Shrine
80% of 25 decks +40% synergy
Verdant Catacombs
76% of 25 decks +65% synergy
Indatha Triome
76% of 25 decks +46% synergy
Windswept Heath
72% of 25 decks +61% synergy
Marsh Flats
72% of 25 decks +61% synergy
Raffine's Tower
71% of 7 decks +45% synergy
Zagoth Triome
71% of 7 decks +42% synergy
Spara's Headquarters
57% of 7 decks +28% synergy
Undergrowth Stadium
52% of 25 decks +26% synergy
Vault of Champions
52% of 25 decks +26% synergy
Exotic Orchard
52% of 25 decks +16% synergy
Misty Rainforest
48% of 25 decks +36% synergy
Bountiful Promenade
48% of 25 decks +24% synergy
Flooded Strand
44% of 25 decks +33% synergy
City of Brass
40% of 25 decks +32% synergy
Wooded Foothills
36% of 25 decks +26% synergy
Polluted Delta
36% of 25 decks +24% synergy
Lush Portico
33% of 18 decks +24% synergy
Bloodstained Mire
32% of 25 decks +21% synergy
Savannah
32% of 25 decks +19% synergy
Bayou
32% of 25 decks +19% synergy
Scrubland
32% of 25 decks +18% synergy
Mana Confluence
28% of 25 decks +21% synergy
Arid Mesa
24% of 25 decks +14% synergy
Brushland
24% of 25 decks +7% synergy
Caves of Koilos
24% of 25 decks -5% synergy
Woodland Cemetery
24% of 25 decks -6% synergy
Underground Mortuary
22% of 18 decks +10% synergy
Horizon Canopy
20% of 25 decks +15% synergy
Overgrown Farmland
20% of 25 decks +4% synergy
Sunpetal Grove
20% of 25 decks -5% synergy
Llanowar Wastes
20% of 25 decks -6% synergy
Shadowy Backstreet
17% of 18 decks +7% synergy
Prismatic Vista
16% of 25 decks +11% synergy
Nurturing Peatland
16% of 25 decks +10% synergy
Deathcap Glade
16% of 25 decks +2% synergy
Isolated Chapel
16% of 25 decks -14% synergy
Canopy Vista
16% of 25 decks -21% synergy
Wooded Bastion
12% of 25 decks +8% synergy