Agatha's Soul Cauldron + Spike Feeder + Gideon's Company

Agatha's Soul Cauldron
Spike Feeder
Gideon's Company

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

Shalai and Hallar
0.01% of 8115 decks 1 decks
Atraxa, Praetors' Voice
0.00% of 34221 decks 1 decks
Creatures
Wall of Limbs
100% of 1 decks +100% synergy
Aetherborn Marauder
100% of 1 decks +100% synergy
Scion of the Swarm
100% of 1 decks +100% synergy
Twinblade Paladin
100% of 2 decks +100% synergy
Blood Researcher
100% of 1 decks +100% synergy
War Elemental
100% of 1 decks +100% synergy
Anafenza, the Foremost
100% of 1 decks +100% synergy
Celestial Unicorn
100% of 2 decks +100% synergy
Aron, Benalia's Ruin
100% of 1 decks +100% synergy
Karlov of the Ghost Council
100% of 1 decks +100% synergy
The Red Terror
100% of 1 decks +100% synergy
Ajani's Pridemate
100% of 2 decks +99% synergy
Voice of the Blessed
100% of 2 decks +99% synergy
Stormtide Leviathan
100% of 1 decks +99% synergy
Archetype of Imagination
100% of 1 decks +99% synergy
Archangel of Thune
100% of 2 decks +99% synergy
Basking Broodscale
100% of 1 decks +99% synergy
Glasspool Mimic
100% of 1 decks +98% synergy
Ragavan, Nimble Pilferer
100% of 1 decks +96% synergy
Dockside Extortionist
100% of 1 decks +92% synergy
Jubilant Mascot
50% of 2 decks +50% synergy
Expedition Raptor
50% of 2 decks +50% synergy
Relief Captain
50% of 2 decks +50% synergy
Gavony Silversmith
50% of 2 decks +50% synergy
Anointer of Valor
50% of 2 decks +50% synergy
Gladehart Cavalry
50% of 2 decks +50% synergy
Sterling Supplier
50% of 2 decks +50% synergy
Angelic Quartermaster
50% of 2 decks +50% synergy
Turntimber Ranger
50% of 2 decks +50% synergy
Alharu, Solemn Ritualist
50% of 2 decks +50% synergy
Ageless Entity
50% of 2 decks +50% synergy
Joiner Adept
50% of 2 decks +50% synergy
Skyclave Cleric
50% of 2 decks +50% synergy
Kazandu Mammoth
50% of 2 decks +50% synergy
Golden Guardian
50% of 2 decks +50% synergy
Wildwood Scourge
50% of 2 decks +50% synergy
Lathiel, the Bounteous Dawn
50% of 2 decks +50% synergy
Triskelion
50% of 2 decks +50% synergy
Herd Baloth
50% of 2 decks +50% synergy
Ivy Lane Denizen
50% of 2 decks +49% synergy
Scurry Oak
50% of 2 decks +49% synergy
Conclave Mentor
50% of 2 decks +49% synergy
Dune Chanter
50% of 2 decks +49% synergy
Vigor
50% of 2 decks +49% synergy
Metallic Mimic
50% of 2 decks +49% synergy
Ashaya, Soul of the Wild
50% of 2 decks +48% synergy
Heliod, Sun-Crowned
50% of 2 decks +48% synergy
Ojer Kaslem, Deepest Growth
50% of 2 decks +48% synergy
Vorinclex, Monstrous Raider
50% of 2 decks +48% synergy
Rosie Cotton of South Lane
50% of 2 decks +48% synergy
Instants
Red Elemental Blast
100% of 1 decks +97% synergy
Lightning Bolt
100% of 1 decks +95% synergy
Deflecting Swat
100% of 1 decks +92% synergy
Arbor Armament
50% of 2 decks +50% synergy
Legolas's Quick Reflexes
50% of 2 decks +48% synergy
Sejiri Shelter
50% of 2 decks +48% synergy
Eladamri's Call
50% of 2 decks +47% synergy
Noxious Revival
50% of 2 decks +47% synergy
Silence
50% of 2 decks +47% synergy
Veil of Summer
50% of 2 decks +47% synergy
Worldly Tutor
50% of 2 decks +43% synergy
Enlightened Tutor
50% of 2 decks +42% synergy
Swords to Plowshares
50% of 2 decks +21% synergy
Sorceries
Sea Gate Restoration
100% of 1 decks +98% synergy
Makindi Stampede
50% of 2 decks +50% synergy
Ondu Inversion
50% of 2 decks +49% synergy
Bala Ged Recovery
50% of 2 decks +46% synergy
Utility Artifacts
Animation Module
50% of 2 decks +50% synergy
Andúril, Narsil Reforged
50% of 2 decks +49% synergy
Ozolith, the Shattered Spire
50% of 2 decks +47% synergy
The Ozolith
50% of 2 decks +47% synergy
The One Ring
50% of 2 decks +41% synergy
Enchantments
Profane Procession
100% of 1 decks +100% synergy
Grasping Shadows
100% of 1 decks +100% synergy
Quest for Pure Flame
100% of 1 decks +100% synergy
Abzan Ascendancy
100% of 1 decks +100% synergy
Mayael's Aria
100% of 1 decks +100% synergy
Agent of the Shadow Thieves
100% of 1 decks +100% synergy
Hadana's Climb
100% of 1 decks +100% synergy
Arcane Adaptation
100% of 1 decks +99% synergy
All Will Be One
100% of 1 decks +98% synergy
Annie Joins Up
100% of 1 decks +97% synergy
Sheltered Aerie
50% of 2 decks +50% synergy
Urban Utopia
50% of 2 decks +50% synergy
Sunbond
50% of 2 decks +50% synergy
New Horizons
50% of 2 decks +50% synergy
Light of Promise
50% of 2 decks +50% synergy
Song of Freyalise
50% of 2 decks +49% synergy
Ajani's Welcome
50% of 2 decks +49% synergy
Legion's Landing
50% of 2 decks +49% synergy
Abundant Growth
50% of 2 decks +49% synergy
Cleric Class
50% of 2 decks +49% synergy
Branching Evolution
50% of 2 decks +48% synergy
Growing Rites of Itlimoc
50% of 2 decks +47% synergy
Cathars' Crusade
50% of 2 decks +47% synergy
Hardened Scales
50% of 2 decks +46% synergy
Smothering Tithe
50% of 2 decks +38% synergy
Utility Lands
Halls of Mist
50% of 2 decks +50% synergy
Lotus Vale
50% of 2 decks +50% synergy
Lotus Field
50% of 2 decks +49% synergy
Gavony Township
50% of 2 decks +48% synergy
Ancient Den
50% of 2 decks +47% synergy
Gaea's Cradle
50% of 2 decks +47% synergy
Maze of Ith
50% of 2 decks +47% synergy
High Market
50% of 2 decks +47% synergy
Karn's Bastion
50% of 2 decks +45% synergy
Boseiju, Who Endures
50% of 2 decks +41% synergy
Yavimaya, Cradle of Growth
50% of 2 decks +41% synergy
Mana Artifacts
Talisman of Unity
50% of 2 decks +48% synergy
Mox Amber
50% of 2 decks +46% synergy
Mox Diamond
50% of 2 decks +46% synergy
Mox Opal
50% of 2 decks +46% synergy
Chrome Mox
50% of 2 decks +44% synergy
Lotus Petal
50% of 2 decks +43% synergy
Jeweled Lotus
50% of 2 decks +42% synergy
Chromatic Lantern
50% of 2 decks +40% synergy
Mana Crypt
50% of 2 decks +39% synergy
Fellwar Stone
50% of 2 decks +29% synergy
Arcane Signet
50% of 2 decks -21% synergy
Sol Ring
50% of 2 decks -34% synergy
Lands
Treva's Ruins
100% of 1 decks +100% synergy
Dromar's Cavern
100% of 1 decks +100% synergy
Sea Gate
100% of 1 decks +99% synergy
Black Dragon Gate
100% of 1 decks +99% synergy
Thriving Moor
100% of 1 decks +99% synergy
Thriving Isle
100% of 1 decks +99% synergy
Sandsteppe Citadel
100% of 1 decks +97% synergy
Plateau
100% of 1 decks +97% synergy
Taiga
100% of 1 decks +97% synergy
Opulent Palace
100% of 1 decks +97% synergy
Seaside Citadel
100% of 1 decks +97% synergy
Arcane Sanctum
100% of 1 decks +97% synergy
Indatha Triome
100% of 1 decks +97% synergy
Zagoth Triome
100% of 1 decks +97% synergy
Raffine's Tower
100% of 1 decks +96% synergy
Spara's Headquarters
100% of 1 decks +96% synergy
Spire Garden
100% of 1 decks +95% synergy
Spectator Seating
100% of 1 decks +94% synergy
Stomping Ground
100% of 1 decks +91% synergy
Command Tower
100% of 2 decks +26% synergy
Meteor Crater
50% of 2 decks +50% synergy
Riftstone Portal
50% of 2 decks +50% synergy
Citadel Gate
50% of 2 decks +49% synergy
Manor Gate
50% of 2 decks +49% synergy
Thriving Grove
50% of 2 decks +49% synergy
Thriving Heath
50% of 2 decks +49% synergy
Savannah
50% of 2 decks +47% synergy
Forbidden Orchard
50% of 2 decks +47% synergy
Plaza of Heroes
50% of 2 decks +46% synergy
Bountiful Promenade
50% of 2 decks +45% synergy
Reflecting Pool
50% of 2 decks +44% synergy
Temple Garden
50% of 2 decks +41% synergy
Wooded Foothills
50% of 2 decks +40% synergy
Bloodstained Mire
50% of 2 decks +40% synergy
Windswept Heath
50% of 2 decks +40% synergy
Flooded Strand
50% of 2 decks +40% synergy
Arid Mesa
50% of 2 decks +39% synergy
Scalding Tarn
50% of 2 decks +39% synergy
Marsh Flats
50% of 2 decks +39% synergy
Verdant Catacombs
50% of 2 decks +38% synergy
Misty Rainforest
50% of 2 decks +38% synergy
Path of Ancestry
50% of 2 decks +29% synergy