Agatha's Soul Cauldron + Spike Feeder + Karlov of the Ghost Council

Agatha's Soul Cauldron
Spike Feeder
Karlov of the Ghost Council

Requires
Agatha's Soul Cauldron must be on the battlefield. Spike Feeder must be in exile (exiled by Agatha's Soul Cauldron). Karlov of the Ghost Council must be on the battlefield. Karlov of the Ghost Council has at least one +1/+1 counter on it.
Steps
  1. Activate Karlov of the Ghost Council using Spike Feeder's second ability by removing a +1/+1 counter from it, causing you to gain 2 life.
  2. Karlov of the Ghost Council triggers, putting two +1/+1 counters on it.
  3. Repeat.
Results
Infinite +1/+1 counters on Karlov of the Ghost Council. Infinite lifegain. Infinite lifegain triggers.

Atraxa, Grand Unifier
0.01% of 14209 decks 1 decks
Kenrith, the Returned King
0.00% of 21513 decks 1 decks
Atraxa, Praetors' Voice
0.00% of 35211 decks 1 decks
Bilbo, Birthday Celebrant
0.02% of 4976 decks 1 decks
Kydele, Chosen of Kruphix // Tymna the Weaver
0.16% of 608 decks 1 decks
Bruse Tarl, Boorish Herder // Reyhan, Last of the Abzan
0.33% of 302 decks 1 decks
New Cards
Demonic Counsel
100% of 1 decks +95% synergy
High Synergy Cards
Archangel of Thune
67% of 6 decks +64% synergy
Esper Sentinel
67% of 6 decks +46% synergy
Smothering Tithe
67% of 6 decks +42% synergy
Creatures
Agatha of the Vile Cauldron
100% of 2 decks +98% synergy
Ignoble Hierarch
100% of 2 decks +74% synergy
Sterling Supplier
50% of 2 decks +50% synergy
Marath, Will of the Wild
50% of 2 decks +50% synergy
War Elemental
50% of 2 decks +50% synergy
Gorilla Shaman
50% of 2 decks +49% synergy
Ulasht, the Hate Seed
50% of 2 decks +49% synergy
Leafkin Avenger
50% of 2 decks +49% synergy
Svella, Ice Shaper
50% of 2 decks +49% synergy
Captivating Crew
50% of 2 decks +49% synergy
Ob Nixilis, Captive Kingpin
50% of 2 decks +49% synergy
Dune Chanter
50% of 2 decks +49% synergy
Drogskol Reaver
50% of 4 decks +48% synergy
Grumgully, the Generous
50% of 2 decks +48% synergy
Walking Ballista
50% of 6 decks +47% synergy
Zirda, the Dawnwaker
50% of 2 decks +47% synergy
Devoted Druid
50% of 6 decks +47% synergy
Shalai and Hallar
50% of 2 decks +46% synergy
Faeburrow Elder
50% of 6 decks +38% synergy
Dockside Extortionist
50% of 2 decks +37% synergy
Noble Hierarch
50% of 4 decks +34% synergy
Birds of Paradise
50% of 6 decks +23% synergy
Mine Worker
33% of 6 decks +33% synergy
Triskelion
33% of 6 decks +33% synergy
Sentinel of the Nameless City
33% of 3 decks +33% synergy
Ajani's Pridemate
33% of 6 decks +32% synergy
Aron, Benalia's Ruin
33% of 6 decks +32% synergy
Witch of the Moors
33% of 6 decks +32% synergy
Metallic Mimic
33% of 6 decks +32% synergy
Good-Fortune Unicorn
33% of 6 decks +31% synergy
Dina, Soul Steeper
33% of 6 decks +31% synergy
Prosperous Innkeeper
33% of 6 decks +31% synergy
Elenda's Hierophant
33% of 3 decks +30% synergy
Ojer Kaslem, Deepest Growth
33% of 3 decks +30% synergy
Heliod, Sun-Crowned
33% of 6 decks +30% synergy
Soul's Attendant
33% of 6 decks +30% synergy
Serra Ascendant
33% of 6 decks +29% synergy
Haywire Mite
33% of 6 decks +29% synergy
Charismatic Conqueror
33% of 3 decks +28% synergy
Vito, Thorn of the Dusk Rose
33% of 6 decks +28% synergy
Sheoldred, the Apocalypse
33% of 6 decks +28% synergy
Ojer Taq, Deepest Foundation
33% of 3 decks +27% synergy
Bloom Tender
33% of 6 decks +25% synergy
Orcish Bowmasters
33% of 6 decks +22% synergy
Magus of the Jar
25% of 4 decks +25% synergy
Fell Beast of Mordor
25% of 4 decks +25% synergy
Sage of Hours
25% of 4 decks +25% synergy
Horizon Chimera
25% of 4 decks +25% synergy
Shanna, Purifying Blade
25% of 4 decks +24% synergy
Zimone and Dina
25% of 4 decks +24% synergy
Instants
Deflecting Swat
50% of 2 decks +34% synergy
Assassin's Trophy
50% of 6 decks +20% synergy
Eladamri's Call
33% of 6 decks +22% synergy
Worldly Tutor
33% of 6 decks +19% synergy
Enlightened Tutor
33% of 6 decks +16% synergy
Anguished Unmaking
33% of 6 decks +9% synergy
Heroic Intervention
33% of 6 decks +4% synergy
Swords to Plowshares
33% of 6 decks -29% synergy
Intuition
25% of 4 decks +23% synergy
Render Silent
25% of 4 decks +22% synergy
Void Rend
25% of 4 decks +10% synergy
Mystical Tutor
25% of 4 decks +10% synergy
Fierce Guardianship
25% of 4 decks +7% synergy
Cyclonic Rift
25% of 4 decks -3% synergy
Arbor Armament
17% of 6 decks +17% synergy
Hatred
17% of 6 decks +16% synergy
Beacon of Immortality
17% of 6 decks +16% synergy
Vanishing Verse
17% of 6 decks +15% synergy
Obscuring Haze
17% of 6 decks +15% synergy
Mortality Spear
17% of 6 decks +14% synergy
Ad Nauseam
17% of 6 decks +14% synergy
Heliod's Intervention
17% of 6 decks +13% synergy
Sejiri Shelter
17% of 6 decks +13% synergy
Demonic Consultation
17% of 6 decks +13% synergy
Chord of Calling
17% of 6 decks +11% synergy
Silence
17% of 6 decks +10% synergy
Entomb
17% of 6 decks +9% synergy
Inspiring Call
17% of 6 decks +9% synergy
Flawless Maneuver
17% of 6 decks +7% synergy
Abrupt Decay
17% of 6 decks +6% synergy
Vampiric Tutor
17% of 6 decks -2% synergy
Dark Ritual
17% of 6 decks -6% synergy
Path to Exile
17% of 6 decks -29% synergy
Sorceries
Gamble
50% of 2 decks +40% synergy
Skyshroud Claim
33% of 6 decks +24% synergy
Toxic Deluge
33% of 6 decks +16% synergy
Demonic Tutor
33% of 6 decks +11% synergy
Nature's Lore
33% of 6 decks +1% synergy
Whispering Madness
25% of 4 decks +22% synergy
Sea Gate Restoration
25% of 4 decks +20% synergy
Neoform
25% of 4 decks +20% synergy
Fabricate
25% of 4 decks +19% synergy
Windfall
25% of 4 decks +12% synergy
Makindi Stampede
17% of 6 decks +16% synergy
Sylvan Tutor
17% of 6 decks +16% synergy
Ondu Inversion
17% of 6 decks +15% synergy
Sylvan Scrying
17% of 6 decks +14% synergy
Approach of the Second Sun
17% of 6 decks +13% synergy
Grim Tutor
17% of 6 decks +12% synergy
Buried Alive
17% of 6 decks +11% synergy
Imperial Seal
17% of 6 decks +11% synergy
Green Sun's Zenith
17% of 6 decks +10% synergy
Bala Ged Recovery
17% of 6 decks +8% synergy
Damn
17% of 6 decks +0% synergy
Three Visits
17% of 6 decks -8% synergy
Farseek
17% of 6 decks -18% synergy
Cultivate
17% of 6 decks -30% synergy
Utility Artifacts
Aetherflux Reservoir
50% of 6 decks +46% synergy
The One Ring
33% of 6 decks +24% synergy
The Great Henge
33% of 6 decks +23% synergy
Andúril, Narsil Reforged
25% of 4 decks +24% synergy
Animation Module
17% of 6 decks +16% synergy
Teferi's Puzzle Box
17% of 6 decks +16% synergy
Venser's Journal
17% of 6 decks +16% synergy
Elixir of Immortality
17% of 6 decks +15% synergy
Wedding Ring
17% of 6 decks +15% synergy
Alhammarret's Archive
17% of 6 decks +15% synergy
Maskwood Nexus
17% of 6 decks +14% synergy
Shadowspear
17% of 6 decks +13% synergy
Phyrexian Altar
17% of 6 decks +13% synergy
Sensei's Divining Top
17% of 6 decks +11% synergy
Mithril Coat
17% of 6 decks +11% synergy
Ashnod's Altar
17% of 6 decks +9% synergy
Bolas's Citadel
17% of 6 decks +7% synergy
Enchantments
Hidetsugu Consumes All
50% of 2 decks +49% synergy
Training Grounds
50% of 4 decks +47% synergy
Underworld Breach
50% of 2 decks +44% synergy
Sylvan Library
50% of 6 decks +38% synergy
Mystic Remora
50% of 4 decks +32% synergy
Rhythm of the Wild
50% of 2 decks +27% synergy
Grasping Shadows
33% of 3 decks +33% synergy
Case of the Uneaten Feast
33% of 3 decks +32% synergy
Authority of the Consuls
33% of 6 decks +29% synergy
Exquisite Blood
33% of 6 decks +28% synergy
The Meathook Massacre
33% of 6 decks +28% synergy
Spelunking
33% of 3 decks +28% synergy
Sanguine Bond
33% of 6 decks +28% synergy
Trouble in Pairs
33% of 3 decks +26% synergy
Insidious Roots
33% of 3 decks +25% synergy
Arcane Adaptation
25% of 4 decks +24% synergy
Hadana's Climb
25% of 4 decks +23% synergy
Rhystic Study
25% of 4 decks -3% synergy
Virtue of Loyalty
20% of 5 decks +17% synergy
Words of Worship
17% of 6 decks +17% synergy
Sheltered Aerie
17% of 6 decks +17% synergy
Urban Utopia
17% of 6 decks +17% synergy
Profane Procession
17% of 6 decks +16% synergy
Abiding Grace
17% of 6 decks +16% synergy
Sunbond
17% of 6 decks +16% synergy
Pollenbright Wings
17% of 6 decks +16% synergy
New Horizons
17% of 6 decks +16% synergy
Verdant Embrace
17% of 6 decks +16% synergy
Agent of the Shadow Thieves
17% of 6 decks +16% synergy
Light of Promise
17% of 6 decks +16% synergy
Song of Freyalise
17% of 6 decks +16% synergy
Legion's Landing
17% of 6 decks +15% synergy
Abundant Growth
17% of 6 decks +15% synergy
Abzan Ascendancy
17% of 6 decks +15% synergy
Survival of the Fittest
17% of 6 decks +15% synergy
Awakening Zone
17% of 6 decks +14% synergy
Cleric Class
17% of 6 decks +14% synergy
Burgeoning
17% of 6 decks +13% synergy
Call of the Ring
17% of 6 decks +13% synergy
Growing Rites of Itlimoc
17% of 6 decks +11% synergy
Cathars' Crusade
17% of 6 decks +11% synergy
Parallel Lives
17% of 6 decks +9% synergy
Guardian Project
17% of 6 decks +8% synergy
Doubling Season
17% of 6 decks +8% synergy
Black Market Connections
17% of 6 decks +6% synergy
Planeswalkers
Basri Ket
17% of 6 decks +16% synergy
Grist, the Hunger Tide
17% of 6 decks +13% synergy
Tyvar, Jubilant Brawler
17% of 6 decks +12% synergy
Utility Lands
Urborg, Tomb of Yawgmoth
50% of 6 decks +40% synergy
Otawara, Soaring City
50% of 4 decks +33% synergy
Hidden Necropolis
33% of 3 decks +32% synergy
Hidden Courtyard
33% of 3 decks +32% synergy
Hidden Nursery
33% of 3 decks +31% synergy
Yavimaya, Cradle of Growth
33% of 6 decks +24% synergy
Boseiju, Who Endures
33% of 6 decks +14% synergy
Minamo, School at Water's Edge
25% of 4 decks +21% synergy
Halls of Mist
17% of 6 decks +17% synergy
Lotus Vale
17% of 6 decks +16% synergy
Seraph Sanctuary
17% of 6 decks +16% synergy
Lotus Field
17% of 6 decks +15% synergy
Maze of Ith
17% of 6 decks +14% synergy
Karn's Bastion
17% of 6 decks +12% synergy
Ancient Den
17% of 6 decks +11% synergy
Gaea's Cradle
17% of 6 decks +11% synergy
Urza's Saga
17% of 6 decks +9% synergy
Minas Tirith
17% of 6 decks +7% synergy
Gavony Township
17% of 6 decks +7% synergy
Ancient Tomb
17% of 6 decks +6% synergy
Rogue's Passage
17% of 6 decks -3% synergy
Reliquary Tower
17% of 6 decks -13% synergy
Bojuka Bog
17% of 6 decks -14% synergy
Mana Artifacts
Chromatic Lantern
50% of 6 decks +40% synergy
Arcane Signet
50% of 6 decks -22% synergy
Sol Ring
50% of 6 decks -34% synergy
Gemstone Array
17% of 6 decks +17% synergy
Phial of Galadriel
17% of 6 decks +16% synergy
Moss Diamond
17% of 6 decks +15% synergy
Pristine Talisman
17% of 6 decks +15% synergy
Marble Diamond
17% of 6 decks +12% synergy
Mox Diamond
17% of 6 decks +12% synergy
Jeweled Lotus
17% of 6 decks +11% synergy
Mana Crypt
17% of 6 decks +8% synergy
Fellwar Stone
17% of 6 decks -4% synergy
Lands
Volcanic Island
100% of 1 decks +86% synergy
Sacred Foundry
100% of 2 decks +64% synergy
Steam Vents
100% of 1 decks +61% synergy
Stomping Ground
100% of 2 decks +59% synergy
Indatha Triome
83% of 6 decks +52% synergy
Temple Garden
83% of 6 decks +43% synergy
Godless Shrine
83% of 6 decks +43% synergy
Overgrown Tomb
83% of 6 decks +41% synergy
Command Tower
83% of 6 decks +9% synergy
Raffine's Tower
75% of 4 decks +47% synergy
Zagoth Triome
75% of 4 decks +44% synergy
Spara's Headquarters
75% of 4 decks +43% synergy
Watery Grave
75% of 4 decks +34% synergy
Windswept Heath
67% of 6 decks +56% synergy
Verdant Catacombs
67% of 6 decks +55% synergy
Flooded Strand
50% of 6 decks +39% synergy
Polluted Delta
50% of 6 decks +39% synergy
Marsh Flats
50% of 6 decks +39% synergy
Misty Rainforest
50% of 6 decks +38% synergy
Plateau
50% of 2 decks +37% synergy
Taiga
50% of 2 decks +37% synergy
Badlands
50% of 2 decks +36% synergy
Tundra
50% of 4 decks +36% synergy
Tropical Island
50% of 4 decks +36% synergy
Underground Sea
50% of 4 decks +36% synergy
Karplusan Forest
50% of 2 decks +33% synergy
Rockfall Vale
50% of 2 decks +28% synergy
Rootbound Crag
50% of 2 decks +26% synergy
Savai Triome
50% of 2 decks +23% synergy
Ziatora's Proving Ground
50% of 2 decks +18% synergy
Jetmir's Garden
50% of 2 decks +17% synergy
Cinder Glade
50% of 2 decks +12% synergy
Blood Crypt
50% of 2 decks +11% synergy
Hallowed Fountain
50% of 4 decks +9% synergy
Breeding Pool
50% of 4 decks +9% synergy
Forbidden Orchard
33% of 6 decks +31% synergy
Reflecting Pool
33% of 6 decks +28% synergy
Lush Portico
33% of 3 decks +21% synergy
Savannah
33% of 6 decks +20% synergy
Shadowy Backstreet
33% of 3 decks +20% synergy
Bayou
33% of 6 decks +20% synergy
Scrubland
33% of 6 decks +20% synergy
Underground Mortuary
33% of 3 decks +17% synergy
Sandsteppe Citadel
33% of 6 decks +8% synergy
Exotic Orchard
33% of 6 decks -2% synergy
Treva's Ruins
25% of 4 decks +24% synergy
Dromar's Cavern
25% of 4 decks +23% synergy
Sea Gate
25% of 4 decks +23% synergy
Thriving Isle
25% of 4 decks +22% synergy
Seaside Citadel
25% of 4 decks -1% synergy