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.

Bruse Tarl, Boorish Herder // Reyhan, Last of the Abzan
0.34% of 290 decks 1 decks
Kydele, Chosen of Kruphix // Tymna the Weaver
0.17% of 576 decks 1 decks
Bilbo, Birthday Celebrant
0.02% of 4391 decks 1 decks
Kenrith, the Returned King
0.00% of 20593 decks 1 decks
Atraxa, Praetors' Voice
0.00% of 34221 decks 1 decks
Creatures
Sterling Supplier
100% of 1 decks +100% synergy
Agatha of the Vile Cauldron
100% of 2 decks +100% synergy
Dune Chanter
100% of 1 decks +99% synergy
Ignoble Hierarch
100% of 2 decks +97% synergy
Noble Hierarch
67% of 3 decks +65% synergy
Archangel of Thune
60% of 5 decks +59% synergy
Devoted Druid
60% of 5 decks +59% synergy
Esper Sentinel
60% of 5 decks +50% synergy
Birds of Paradise
60% of 5 decks +48% synergy
Marath, Will of the Wild
50% of 2 decks +50% synergy
War Elemental
50% of 2 decks +50% synergy
Ulasht, the Hate Seed
50% of 2 decks +50% synergy
Leafkin Avenger
50% of 2 decks +50% synergy
Sentinel of the Nameless City
50% of 2 decks +50% synergy
Gorilla Shaman
50% of 2 decks +50% synergy
Svella, Ice Shaper
50% of 2 decks +50% synergy
Ob Nixilis, Captive Kingpin
50% of 2 decks +50% synergy
Grumgully, the Generous
50% of 2 decks +49% synergy
Shalai and Hallar
50% of 2 decks +49% synergy
Zirda, the Dawnwaker
50% of 2 decks +49% synergy
Captivating Crew
50% of 2 decks +49% synergy
Elenda's Hierophant
50% of 2 decks +48% synergy
Ojer Kaslem, Deepest Growth
50% of 2 decks +48% synergy
Charismatic Conqueror
50% of 2 decks +47% synergy
Ojer Taq, Deepest Foundation
50% of 2 decks +47% synergy
Dockside Extortionist
50% of 2 decks +42% synergy
Mine Worker
40% of 5 decks +40% synergy
Aron, Benalia's Ruin
40% of 5 decks +40% synergy
Triskelion
40% of 5 decks +40% synergy
Ajani's Pridemate
40% of 5 decks +39% synergy
Good-Fortune Unicorn
40% of 5 decks +39% synergy
Witch of the Moors
40% of 5 decks +39% synergy
Metallic Mimic
40% of 5 decks +39% synergy
Haywire Mite
40% of 5 decks +38% synergy
Faeburrow Elder
40% of 5 decks +37% synergy
Walking Ballista
40% of 5 decks +37% synergy
Vito, Thorn of the Dusk Rose
40% of 5 decks +37% synergy
Bloom Tender
40% of 5 decks +36% synergy
Orcish Bowmasters
40% of 5 decks +34% synergy
Magus of the Jar
33% of 3 decks +33% synergy
Shanna, Purifying Blade
33% of 3 decks +33% synergy
Horizon Chimera
33% of 3 decks +33% synergy
Zimone and Dina
33% of 3 decks +33% synergy
Fell Beast of Mordor
33% of 3 decks +33% synergy
Shabraz, the Skyshark
33% of 3 decks +33% synergy
Queza, Augur of Agonies
33% of 3 decks +33% synergy
Atraxa, Praetors' Voice
33% of 3 decks +33% synergy
Drogskol Reaver
33% of 3 decks +33% synergy
Edric, Spymaster of Trest
33% of 3 decks +33% synergy
Biomancer's Familiar
33% of 3 decks +33% synergy
Instants
Assassin's Trophy
60% of 5 decks +54% synergy
Deflecting Swat
50% of 2 decks +42% synergy
Eladamri's Call
40% of 5 decks +37% synergy
Anguished Unmaking
40% of 5 decks +34% synergy
Enlightened Tutor
40% of 5 decks +32% synergy
Intuition
33% of 3 decks +32% synergy
Mystical Tutor
33% of 3 decks +26% synergy
Fierce Guardianship
33% of 3 decks +25% synergy
Arbor Armament
20% of 5 decks +20% synergy
Hatred
20% of 5 decks +20% synergy
Mortality Spear
20% of 5 decks +19% synergy
Obscuring Haze
20% of 5 decks +19% synergy
Sejiri Shelter
20% of 5 decks +18% synergy
Abrupt Decay
20% of 5 decks +18% synergy
Chord of Calling
20% of 5 decks +17% synergy
Silence
20% of 5 decks +17% synergy
Inspiring Call
20% of 5 decks +17% synergy
Entomb
20% of 5 decks +16% synergy
Flawless Maneuver
20% of 5 decks +16% synergy
Worldly Tutor
20% of 5 decks +13% synergy
Vampiric Tutor
20% of 5 decks +10% synergy
Dark Ritual
20% of 5 decks +9% synergy
Heroic Intervention
20% of 5 decks +6% synergy
Path to Exile
20% of 5 decks -0% synergy
Swords to Plowshares
20% of 5 decks -9% synergy
Sorceries
Gamble
50% of 2 decks +45% synergy
Whispering Madness
33% of 3 decks +33% synergy
Neoform
33% of 3 decks +32% synergy
Sea Gate Restoration
33% of 3 decks +31% synergy
Fabricate
33% of 3 decks +30% synergy
Windfall
33% of 3 decks +27% synergy
Makindi Stampede
20% of 5 decks +20% synergy
Sylvan Tutor
20% of 5 decks +20% synergy
Ondu Inversion
20% of 5 decks +19% synergy
Approach of the Second Sun
20% of 5 decks +18% synergy
Grim Tutor
20% of 5 decks +17% synergy
Buried Alive
20% of 5 decks +17% synergy
Imperial Seal
20% of 5 decks +17% synergy
Green Sun's Zenith
20% of 5 decks +17% synergy
Bala Ged Recovery
20% of 5 decks +16% synergy
Skyshroud Claim
20% of 5 decks +16% synergy
Toxic Deluge
20% of 5 decks +11% synergy
Demonic Tutor
20% of 5 decks +8% synergy
Nature's Lore
20% of 5 decks +5% synergy
Utility Artifacts
Aetherflux Reservoir
40% of 5 decks +36% synergy
Andúril, Narsil Reforged
33% of 3 decks +32% synergy
Animation Module
20% of 5 decks +20% synergy
Teferi's Puzzle Box
20% of 5 decks +19% synergy
Venser's Journal
20% of 5 decks +19% synergy
Elixir of Immortality
20% of 5 decks +18% synergy
Maskwood Nexus
20% of 5 decks +17% synergy
Shadowspear
20% of 5 decks +16% synergy
Phyrexian Altar
20% of 5 decks +16% synergy
The Great Henge
20% of 5 decks +15% synergy
Mithril Coat
20% of 5 decks +14% synergy
Ashnod's Altar
20% of 5 decks +12% synergy
The One Ring
20% of 5 decks +11% synergy
Enchantments
Training Grounds
67% of 3 decks +65% synergy
Smothering Tithe
60% of 5 decks +48% synergy
Hidetsugu Consumes All
50% of 2 decks +50% synergy
Grasping Shadows
50% of 2 decks +50% synergy
Case of the Uneaten Feast
50% of 2 decks +49% synergy
Insidious Roots
50% of 2 decks +48% synergy
Spelunking
50% of 2 decks +47% synergy
Underworld Breach
50% of 2 decks +47% synergy
Trouble in Pairs
50% of 2 decks +46% synergy
Rhythm of the Wild
50% of 2 decks +45% synergy
Sylvan Library
40% of 5 decks +34% synergy
Hadana's Climb
33% of 3 decks +33% synergy
Arcane Adaptation
33% of 3 decks +33% synergy
Mystic Remora
33% of 3 decks +25% synergy
Words of Worship
20% of 5 decks +20% synergy
Sheltered Aerie
20% of 5 decks +20% synergy
Urban Utopia
20% of 5 decks +20% synergy
Pollenbright Wings
20% of 5 decks +20% synergy
Profane Procession
20% of 5 decks +20% synergy
Abiding Grace
20% of 5 decks +20% synergy
Abzan Ascendancy
20% of 5 decks +20% synergy
Sunbond
20% of 5 decks +20% synergy
New Horizons
20% of 5 decks +20% synergy
Verdant Embrace
20% of 5 decks +20% synergy
Agent of the Shadow Thieves
20% of 5 decks +20% synergy
Light of Promise
20% of 5 decks +20% synergy
Song of Freyalise
20% of 5 decks +19% synergy
Legion's Landing
20% of 5 decks +19% synergy
Abundant Growth
20% of 5 decks +19% synergy
Survival of the Fittest
20% of 5 decks +19% synergy
Awakening Zone
20% of 5 decks +19% synergy
Virtue of Loyalty
20% of 5 decks +19% synergy
Burgeoning
20% of 5 decks +18% synergy
Authority of the Consuls
20% of 5 decks +18% synergy
Call of the Ring
20% of 5 decks +18% synergy
Exquisite Blood
20% of 5 decks +18% synergy
Growing Rites of Itlimoc
20% of 5 decks +17% synergy
The Meathook Massacre
20% of 5 decks +17% synergy
Cathars' Crusade
20% of 5 decks +17% synergy
Sanguine Bond
20% of 5 decks +17% synergy
Parallel Lives
20% of 5 decks +17% synergy
Doubling Season
20% of 5 decks +16% synergy
Planeswalkers
Basri Ket
20% of 5 decks +20% synergy
Grist, the Hunger Tide
20% of 5 decks +19% synergy
Tyvar, Jubilant Brawler
20% of 5 decks +19% synergy
Utility Lands
Otawara, Soaring City
67% of 3 decks +58% synergy
Hidden Necropolis
50% of 2 decks +49% synergy
Hidden Courtyard
50% of 2 decks +49% synergy
Hidden Nursery
50% of 2 decks +49% synergy
Boseiju, Who Endures
40% of 5 decks +31% synergy
Urborg, Tomb of Yawgmoth
40% of 5 decks +30% synergy
Minamo, School at Water's Edge
33% of 3 decks +31% synergy
Halls of Mist
20% of 5 decks +20% synergy
Lotus Vale
20% of 5 decks +20% synergy
Lotus Field
20% of 5 decks +19% synergy
Gavony Township
20% of 5 decks +18% synergy
Ancient Den
20% of 5 decks +17% synergy
Gaea's Cradle
20% of 5 decks +17% synergy
Maze of Ith
20% of 5 decks +17% synergy
Minas Tirith
20% of 5 decks +16% synergy
Karn's Bastion
20% of 5 decks +15% synergy
Urza's Saga
20% of 5 decks +13% synergy
Yavimaya, Cradle of Growth
20% of 5 decks +11% synergy
Ancient Tomb
20% of 5 decks +9% synergy
Bojuka Bog
20% of 5 decks +4% synergy
Rogue's Passage
20% of 5 decks +1% synergy
Mana Artifacts
Arcane Signet
60% of 5 decks -11% synergy
Chromatic Lantern
40% of 5 decks +30% synergy
Sol Ring
40% of 5 decks -44% synergy
Gemstone Array
20% of 5 decks +20% synergy
Moss Diamond
20% of 5 decks +19% synergy
Pristine Talisman
20% of 5 decks +19% synergy
Marble Diamond
20% of 5 decks +18% synergy
Mox Diamond
20% of 5 decks +16% synergy
Jeweled Lotus
20% of 5 decks +12% synergy
Mana Crypt
20% of 5 decks +9% synergy
Lands
Volcanic Island
100% of 1 decks +97% synergy
Sacred Foundry
100% of 2 decks +92% synergy
Steam Vents
100% of 1 decks +91% synergy
Stomping Ground
100% of 2 decks +91% synergy
Indatha Triome
80% of 5 decks +77% synergy
Temple Garden
80% of 5 decks +71% synergy
Overgrown Tomb
80% of 5 decks +71% synergy
Godless Shrine
80% of 5 decks +71% synergy
Command Tower
80% of 5 decks +6% synergy
Tundra
67% of 3 decks +64% synergy
Tropical Island
67% of 3 decks +64% synergy
Zagoth Triome
67% of 3 decks +63% synergy
Underground Sea
67% of 3 decks +63% synergy
Raffine's Tower
67% of 3 decks +63% synergy
Spara's Headquarters
67% of 3 decks +63% synergy
Watery Grave
67% of 3 decks +56% synergy
Windswept Heath
60% of 5 decks +50% synergy
Marsh Flats
60% of 5 decks +49% synergy
Verdant Catacombs
60% of 5 decks +48% synergy
Plateau
50% of 2 decks +47% synergy
Taiga
50% of 2 decks +47% synergy
Lush Portico
50% of 2 decks +47% synergy
Shadowy Backstreet
50% of 2 decks +47% synergy
Badlands
50% of 2 decks +47% synergy
Savai Triome
50% of 2 decks +47% synergy
Ziatora's Proving Ground
50% of 2 decks +47% synergy
Karplusan Forest
50% of 2 decks +46% synergy
Underground Mortuary
50% of 2 decks +46% synergy
Jetmir's Garden
50% of 2 decks +46% synergy
Rockfall Vale
50% of 2 decks +45% synergy
Rootbound Crag
50% of 2 decks +45% synergy
Cinder Glade
50% of 2 decks +42% synergy
Blood Crypt
50% of 2 decks +41% synergy
Sandsteppe Citadel
40% of 5 decks +37% synergy
Savannah
40% of 5 decks +37% synergy
Bayou
40% of 5 decks +37% synergy
Forbidden Orchard
40% of 5 decks +37% synergy
Scrubland
40% of 5 decks +37% synergy
Reflecting Pool
40% of 5 decks +34% synergy
Flooded Strand
40% of 5 decks +30% synergy
Polluted Delta
40% of 5 decks +29% synergy
Misty Rainforest
40% of 5 decks +28% synergy
Exotic Orchard
40% of 5 decks +5% synergy
Treva's Ruins
33% of 3 decks +33% synergy
Dromar's Cavern
33% of 3 decks +33% synergy
Sea Gate
33% of 3 decks +32% synergy
Thriving Isle
33% of 3 decks +32% synergy
Opulent Palace
33% of 3 decks +30% synergy
Seaside Citadel
33% of 3 decks +30% synergy
Arcane Sanctum
33% of 3 decks +30% synergy