Treebeard, Gracious Host + Spike Feeder + Arachnoform

Treebeard, Gracious Host
Spike Feeder
Arachnoform

Requires
Treebeard, Gracious Host must be on the battlefield. Spike Feeder must be on the battlefield. Arachnoform must be on the battlefield. Arachnoform attached to Spike Feeder. Spike Feeder has at least one +1/+1 counter on it.
Steps
  1. Activate Spike Feeder's second ability by removing a +1/+1 counter from it, causing you to gain two life.
  2. Treebeard triggers, putting two +1/+1 counters on Spike Feeder.
  3. Repeat.
  4. Once Spike Feeder has infinite +1/+1 counters, you may target any other Halfling or Treefolk with Treebeard's ability.
Results
Infinite +1/+1 counters on all Halflings and Treefolks you control. Infinite lifegain. Infinite lifegain triggers.

Treebeard, Gracious Host
0.19% of 1554 decks 3 decks
Creatures
Ivy Lane Denizen
100% of 3 decks +97% synergy
Scurry Oak
100% of 3 decks +96% synergy
Soul's Attendant
100% of 3 decks +94% synergy
Trostani, Selesnya's Voice
100% of 3 decks +94% synergy
Essence Warden
100% of 3 decks +92% synergy
Rosie Cotton of South Lane
100% of 3 decks +90% synergy
Soul Warden
100% of 3 decks +89% synergy
Kutzil, Malamet Exemplar
100% of 2 decks +57% synergy
Verdant Sun's Avatar
67% of 3 decks +66% synergy
Samwise Gamgee
67% of 3 decks +64% synergy
Suture Priest
67% of 3 decks +63% synergy
Sam, Loyal Attendant
67% of 3 decks +63% synergy
Herd Baloth
67% of 3 decks +63% synergy
The Gaffer
67% of 3 decks +61% synergy
Prosperous Innkeeper
67% of 3 decks +60% synergy
Peregrin Took
67% of 3 decks +60% synergy
Tireless Provisioner
67% of 3 decks +60% synergy
Heliod, Sun-Crowned
67% of 3 decks +58% synergy
Delighted Halfling
67% of 3 decks +56% synergy
Birds of Paradise
67% of 3 decks +46% synergy
Fanatic of Rhonas
50% of 2 decks +44% synergy
Majestic Myriarch
33% of 3 decks +33% synergy
Avenging Huntbonder
33% of 3 decks +33% synergy
Sungrace Pegasus
33% of 3 decks +33% synergy
Twinblade Paladin
33% of 3 decks +33% synergy
Timber Protector
33% of 3 decks +33% synergy
Fangorn, Tree Shepherd
33% of 3 decks +33% synergy
Ezzaroot Channeler
33% of 3 decks +32% synergy
Baneslayer Angel
33% of 3 decks +32% synergy
Runic Armasaur
33% of 3 decks +32% synergy
Angelic Skirmisher
33% of 3 decks +32% synergy
Elder Gargaroth
33% of 3 decks +32% synergy
Impassioned Orator
33% of 3 decks +32% synergy
Distinguished Conjurer
33% of 3 decks +32% synergy
Prize Pig
33% of 3 decks +31% synergy
Lunarch Veteran
33% of 3 decks +31% synergy
Vigor
33% of 3 decks +31% synergy
Arcus Acolyte
33% of 3 decks +31% synergy
Rhox Faithmender
33% of 3 decks +30% synergy
Banquet Guests
33% of 3 decks +30% synergy
Gilded Goose
33% of 3 decks +29% synergy
Archangel of Thune
33% of 3 decks +29% synergy
Lathiel, the Bounteous Dawn
33% of 3 decks +28% synergy
Walking Ballista
33% of 3 decks +28% synergy
Farmer Cotton
33% of 3 decks +28% synergy
Abzan Battle Priest
33% of 3 decks +26% synergy
Toski, Bearer of Secrets
33% of 3 decks +22% synergy
Sun Titan
33% of 3 decks +21% synergy
Esper Sentinel
33% of 3 decks +15% synergy
Instants
Enlightened Tutor
100% of 3 decks +83% synergy
Worldly Tutor
67% of 3 decks +53% synergy
Eladamri's Call
67% of 3 decks +50% synergy
Beast Within
67% of 3 decks +24% synergy
Path to Exile
67% of 3 decks +14% synergy
Legolas's Quick Reflexes
50% of 2 decks +47% synergy
Hallowed Moonlight
33% of 3 decks +33% synergy
Illumination
33% of 3 decks +33% synergy
Revelation of Power
33% of 3 decks +33% synergy
Avoid Fate
33% of 3 decks +33% synergy
Crib Swap
33% of 3 decks +32% synergy
Naturalize
33% of 3 decks +32% synergy
Take Up the Shield
33% of 3 decks +31% synergy
Mana Tithe
33% of 3 decks +31% synergy
Noxious Revival
33% of 3 decks +31% synergy
Silence
33% of 3 decks +29% synergy
Reprieve
33% of 3 decks +27% synergy
Chord of Calling
33% of 3 decks +27% synergy
Heroic Intervention
33% of 3 decks -2% synergy
Generous Gift
33% of 3 decks -2% synergy
Swords to Plowshares
33% of 3 decks -34% synergy
Sorceries
Cultivate
100% of 3 decks +55% synergy
Primal Command
67% of 3 decks +66% synergy
Altar of Bone
33% of 3 decks +33% synergy
Green Sun's Twilight
33% of 3 decks +32% synergy
Sylvan Tutor
33% of 3 decks +32% synergy
Natural Order
33% of 3 decks +32% synergy
Many Partings
33% of 3 decks +29% synergy
Green Sun's Zenith
33% of 3 decks +27% synergy
Overwhelming Stampede
33% of 3 decks +25% synergy
Idyllic Tutor
33% of 3 decks +24% synergy
Farseek
33% of 3 decks +13% synergy
Kodama's Reach
33% of 3 decks +3% synergy
Rampant Growth
33% of 3 decks -2% synergy
Utility Artifacts
Caduceus, Staff of Hermes
100% of 1 decks +95% synergy
Swiftfoot Boots
100% of 3 decks +72% synergy
Maskwood Nexus
67% of 3 decks +66% synergy
Nuka-Cola Vending Machine
50% of 2 decks +48% synergy
Runed Stalactite
33% of 3 decks +33% synergy
Amorphous Axe
33% of 3 decks +33% synergy
Mirror Shield
33% of 3 decks +33% synergy
Field-Tested Frying Pan
33% of 3 decks +32% synergy
Shadowspear
33% of 3 decks +30% synergy
Basilisk Collar
33% of 3 decks +30% synergy
Sword of the Animist
33% of 3 decks +29% synergy
Well of Lost Dreams
33% of 3 decks +28% synergy
The Great Henge
33% of 3 decks +22% synergy
Lightning Greaves
33% of 3 decks +16% synergy
Enchantments
Light of Promise
67% of 3 decks +64% synergy
Ajani's Welcome
67% of 3 decks +63% synergy
Cleric Class
67% of 3 decks +60% synergy
Sylvan Library
67% of 3 decks +53% synergy
Cathars' Crusade
67% of 3 decks +53% synergy
Aura Shards
67% of 3 decks +48% synergy
Angelic Chorus
33% of 3 decks +33% synergy
On Serra's Wings
33% of 3 decks +32% synergy
Battle Mastery
33% of 3 decks +32% synergy
Survival of the Fittest
33% of 3 decks +32% synergy
Assemble the Entmoot
33% of 3 decks +31% synergy
Test of Endurance
33% of 3 decks +31% synergy
Unflinching Courage
33% of 3 decks +29% synergy
Burgeoning
33% of 3 decks +29% synergy
Dawn of Hope
33% of 3 decks +29% synergy
True Conviction
33% of 3 decks +29% synergy
Duelist's Heritage
33% of 3 decks +29% synergy
Land Tax
33% of 3 decks +28% synergy
Primal Vigor
33% of 3 decks +28% synergy
Shield of the Oversoul
33% of 3 decks +27% synergy
Exploration
33% of 3 decks +26% synergy
Branching Evolution
33% of 3 decks +24% synergy
Growing Rites of Itlimoc
33% of 3 decks +24% synergy
Smothering Tithe
33% of 3 decks +16% synergy
Utopia Sprawl
33% of 3 decks +14% synergy
Planeswalkers
Gideon Blackblade
33% of 3 decks +33% synergy
Elspeth Resplendent
33% of 3 decks +32% synergy
Ajani, Mentor of Heroes
33% of 3 decks +31% synergy
Utility Lands
Yavimaya, Cradle of Growth
67% of 3 decks +47% synergy
Ancient Tomb
33% of 3 decks +28% synergy
The Shire
33% of 3 decks +27% synergy
Gaea's Cradle
33% of 3 decks +27% synergy
Rogue's Passage
33% of 3 decks +9% synergy
Reliquary Tower
33% of 3 decks +5% synergy
Mana Artifacts
Selesnya Signet
100% of 3 decks +79% synergy
Arcane Signet
100% of 3 decks +42% synergy
Sol Ring
100% of 3 decks +23% synergy
Lotus Petal
67% of 3 decks +65% synergy
Ancient Cornucopia
50% of 2 decks +49% synergy
Darksteel Ingot
33% of 3 decks +33% synergy
Chromatic Lantern
33% of 3 decks +32% synergy
Chrome Mox
33% of 3 decks +31% synergy
Pristine Talisman
33% of 3 decks +30% synergy
Decanter of Endless Water
33% of 3 decks +30% synergy
Lands
Temple Garden
100% of 3 decks +56% synergy
Command Tower
100% of 3 decks +16% synergy
Overgrown Farmland
67% of 3 decks +31% synergy
Sunpetal Grove
67% of 3 decks +19% synergy
Canopy Vista
67% of 3 decks -0% synergy
Graypelt Refuge
33% of 3 decks +23% synergy
Blossoming Sands
33% of 3 decks +13% synergy
Branchloft Pathway
33% of 3 decks +8% synergy
Windswept Heath
33% of 3 decks +7% synergy
Brushland
33% of 3 decks +3% synergy
Sungrass Prairie
33% of 3 decks +1% synergy
Temple of Plenty
33% of 3 decks -2% synergy
Bountiful Promenade
33% of 3 decks -4% synergy
Fortified Village
33% of 3 decks -12% synergy