Necrotic Ooze + Boa Constrictor + Devoted Druid

Necrotic Ooze
Boa Constrictor
Devoted Druid

Requires
Necrotic Ooze must be on the battlefield. Boa Constrictor must be in the graveyard. Devoted Druid must be in the graveyard. Necrotic Ooze does not have summoning sickness. It is your precombat main phase.
Steps
  1. Activate Necrotic Ooze using Boa Constrictor's ability by tapping it, giving it +3/+3 until end of turn.
  2. Activate Necrotic Ooze using Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
  3. Repeat.
  4. Once Necrotic Ooze has infinite toughness, you may instead use Devoted Druid's first ability to get infinite green mana.
Results
Infinite green mana. Infinitely large Necrotic Ooze until end of turn.

Reyhan, Last of the Abzan // Rograkh, Son of Rohgahh
0.22% of 457 decks 1 decks
Shadowheart, Dark Justiciar // Cloakwood Hermit
0.43% of 231 decks 1 decks
Varolz, the Scar-Striped
0.08% of 1233 decks 1 decks
Savra, Queen of the Golgari
0.04% of 2793 decks 1 decks
Creatures
Hazel's Brewmaster
100% of 1 decks +95% synergy
Dualcaster Mage
100% of 1 decks +95% synergy
The Odd Acorn Gang
100% of 1 decks +93% synergy
Fain, the Broker
75% of 4 decks +74% synergy
Walking Ballista
75% of 4 decks +72% synergy
Crystalline Crawler
50% of 4 decks +50% synergy
Triskelion
50% of 4 decks +50% synergy
Daemogoth Titan
50% of 4 decks +48% synergy
Witherbloom Apprentice
50% of 4 decks +48% synergy
Mikaeus, the Unhallowed
50% of 4 decks +47% synergy
Corpsejack Menace
50% of 4 decks +45% synergy
Arbor Elf
50% of 4 decks +43% synergy
Kami of Whispered Hopes
50% of 4 decks +42% synergy
Viscera Seer
50% of 4 decks +41% synergy
Elves of Deep Shadow
50% of 4 decks +39% synergy
Deathrite Shaman
50% of 4 decks +38% synergy
Elvish Mystic
50% of 4 decks +32% synergy
Evolution Witness
33% of 3 decks +29% synergy
Bristly Bill, Spine Sower
33% of 3 decks +29% synergy
Warren Soultrader
33% of 3 decks +26% synergy
Triskelavus
25% of 4 decks +25% synergy
Grim Poppet
25% of 4 decks +25% synergy
Bog Initiate
25% of 4 decks +25% synergy
Force of Savagery
25% of 4 decks +25% synergy
Honored Hierarch
25% of 4 decks +25% synergy
Phyrexian Dreadnought
25% of 4 decks +25% synergy
Witherbloom Pledgemage
25% of 4 decks +25% synergy
Death's Shadow
25% of 4 decks +25% synergy
Spinebiter
25% of 4 decks +25% synergy
Cinderhaze Wretch
25% of 4 decks +25% synergy
Body Snatcher
25% of 4 decks +25% synergy
Channeler Initiate
25% of 4 decks +25% synergy
Quillspike
25% of 4 decks +25% synergy
Rot Wolf
25% of 4 decks +25% synergy
Phyrexian Soulgorger
25% of 4 decks +25% synergy
Whispering Specter
25% of 4 decks +25% synergy
Mindless Automaton
25% of 4 decks +25% synergy
Pili-Pala
25% of 4 decks +25% synergy
Riftsweeper
25% of 4 decks +25% synergy
Lotleth Troll
25% of 4 decks +25% synergy
Terror of Towashi
25% of 4 decks +25% synergy
Corpse Connoisseur
25% of 4 decks +25% synergy
Phyrexian Crusader
25% of 4 decks +24% synergy
Oathsworn Vampire
25% of 4 decks +24% synergy
Shakedown Heavy
25% of 4 decks +24% synergy
Mortivore
25% of 4 decks +24% synergy
Glistener Elf
25% of 4 decks +24% synergy
Blight Mamba
25% of 4 decks +24% synergy
Cult Conscript
25% of 4 decks +24% synergy
Deathgreeter
25% of 4 decks +24% synergy
Instants
Fury Storm
100% of 1 decks +99% synergy
Deflecting Swat
100% of 1 decks +84% synergy
Entomb
75% of 4 decks +68% synergy
Peerless Recycling
50% of 2 decks +46% synergy
Nature's Claim
50% of 4 decks +40% synergy
Worldly Tutor
50% of 4 decks +36% synergy
Assassin's Trophy
50% of 4 decks +20% synergy
Archdruid's Charm
33% of 3 decks +26% synergy
Reincarnation
25% of 4 decks +25% synergy
Malicious Affliction
25% of 4 decks +25% synergy
Fake Your Own Death
25% of 4 decks +24% synergy
Rushed Rebirth
25% of 4 decks +24% synergy
Reckoner's Bargain
25% of 4 decks +24% synergy
Supernatural Stamina
25% of 4 decks +23% synergy
Naturalize
25% of 4 decks +23% synergy
Tainted Strike
25% of 4 decks +23% synergy
Momentous Fall
25% of 4 decks +23% synergy
Feign Death
25% of 4 decks +23% synergy
Imp's Mischief
25% of 4 decks +22% synergy
Saw in Half
25% of 4 decks +22% synergy
Grisly Salvage
25% of 4 decks +20% synergy
Veil of Summer
25% of 4 decks +19% synergy
Tamiyo's Safekeeping
25% of 4 decks +18% synergy
Go for the Throat
25% of 4 decks +18% synergy
Crop Rotation
25% of 4 decks +15% synergy
Village Rites
25% of 4 decks +15% synergy
Abrupt Decay
25% of 4 decks +14% synergy
Vampiric Tutor
25% of 4 decks +7% synergy
Dark Ritual
25% of 4 decks +3% synergy
Heroic Intervention
25% of 4 decks -5% synergy
Sorceries
Heat Shimmer
100% of 1 decks +99% synergy
Twinflame
100% of 1 decks +97% synergy
Molten Duplication
100% of 1 decks +97% synergy
Chain of Smog
50% of 4 decks +49% synergy
Unmarked Grave
50% of 4 decks +47% synergy
Diresight
50% of 2 decks +47% synergy
Fell
50% of 2 decks +47% synergy
Finale of Devastation
50% of 4 decks +42% synergy
Reanimate
50% of 4 decks +34% synergy
Demonic Tutor
50% of 4 decks +28% synergy
Lively Dirge
33% of 3 decks +31% synergy
Chain of Acid
25% of 4 decks +25% synergy
Tendrils of Agony
25% of 4 decks +24% synergy
Stitch Together
25% of 4 decks +23% synergy
Life // Death
25% of 4 decks +23% synergy
Jarad's Orders
25% of 4 decks +23% synergy
Life's Legacy
25% of 4 decks +23% synergy
Persist
25% of 4 decks +23% synergy
Infectious Inquiry
25% of 4 decks +22% synergy
Sylvan Scrying
25% of 4 decks +22% synergy
Unearth
25% of 4 decks +22% synergy
Grim Tutor
25% of 4 decks +20% synergy
Dread Return
25% of 4 decks +20% synergy
Exsanguinate
25% of 4 decks +19% synergy
Buried Alive
25% of 4 decks +19% synergy
Diabolic Tutor
25% of 4 decks +19% synergy
Rise of the Witch-king
25% of 4 decks +18% synergy
Diabolic Intent
25% of 4 decks +16% synergy
Harmonize
25% of 4 decks +16% synergy
Night's Whisper
25% of 4 decks +16% synergy
Skyshroud Claim
25% of 4 decks +16% synergy
Culling Ritual
25% of 4 decks +14% synergy
Rampant Growth
25% of 4 decks -10% synergy
Cultivate
25% of 4 decks -21% synergy
Utility Artifacts
Phyrexian Altar
50% of 4 decks +46% synergy
Ashnod's Altar
50% of 4 decks +42% synergy
Winter Moon
33% of 3 decks +32% synergy
Mana Web
25% of 4 decks +25% synergy
Smokestack
25% of 4 decks +25% synergy
Luxior, Giada's Gift
25% of 4 decks +24% synergy
Umbral Mantle
25% of 4 decks +24% synergy
Elixir of Immortality
25% of 4 decks +23% synergy
Birthing Pod
25% of 4 decks +22% synergy
Expedition Map
25% of 4 decks +22% synergy
Aetherflux Reservoir
25% of 4 decks +21% synergy
Wishclaw Talisman
25% of 4 decks +20% synergy
Ozolith, the Shattered Spire
25% of 4 decks +19% synergy
Lightning Greaves
25% of 4 decks -0% synergy
Swiftfoot Boots
25% of 4 decks -3% synergy
Enchantments
Gratuitous Violence
100% of 1 decks +98% synergy
Uncivil Unrest
100% of 1 decks +98% synergy
Dictate of the Twin Gods
100% of 1 decks +98% synergy
Fiery Emancipation
100% of 1 decks +96% synergy
City on Fire
100% of 1 decks +95% synergy
Branching Evolution
50% of 4 decks +45% synergy
Necropotence
50% of 4 decks +45% synergy
Ripples of Undeath
50% of 2 decks +43% synergy
Utopia Sprawl
50% of 4 decks +42% synergy
Innkeeper's Talent
50% of 2 decks +41% synergy
Wild Growth
50% of 4 decks +39% synergy
Sylvan Library
50% of 4 decks +38% synergy
Trudge Garden
25% of 4 decks +24% synergy
Thran Vigil
25% of 4 decks +24% synergy
Unspeakable Symbol
25% of 4 decks +24% synergy
Pattern of Rebirth
25% of 4 decks +24% synergy
Blight Mound
25% of 4 decks +24% synergy
Helix Pinnacle
25% of 4 decks +24% synergy
Grave Betrayal
25% of 4 decks +24% synergy
Dark Prophecy
25% of 4 decks +24% synergy
Phyresis
25% of 4 decks +24% synergy
Tortured Existence
25% of 4 decks +23% synergy
Master Chef
25% of 4 decks +23% synergy
Oversold Cemetery
25% of 4 decks +23% synergy
Survival of the Fittest
25% of 4 decks +23% synergy
Primal Vigor
25% of 4 decks +22% synergy
Greater Good
25% of 4 decks +20% synergy
Bastion of Remembrance
25% of 4 decks +19% synergy
Doubling Season
25% of 4 decks +16% synergy
Hardened Scales
25% of 4 decks +16% synergy
Moldervine Reclamation
25% of 4 decks +16% synergy
Animate Dead
25% of 4 decks +16% synergy
Planeswalkers
Karn, the Great Creator
25% of 4 decks +24% synergy
Professor Onyx
25% of 4 decks +24% synergy
Utility Lands
Yavimaya, Cradle of Growth
50% of 4 decks +41% synergy
Boseiju, Who Endures
50% of 4 decks +30% synergy
Lake of the Dead
25% of 4 decks +24% synergy
Inkmoth Nexus
25% of 4 decks +24% synergy
Minas Morgul, Dark Fortress
25% of 4 decks +23% synergy
The Black Gate
25% of 4 decks +21% synergy
Shizo, Death's Storehouse
25% of 4 decks +20% synergy
Urborg, Tomb of Yawgmoth
25% of 4 decks +15% synergy
Cabal Coffers
25% of 4 decks +14% synergy
Reliquary Tower
25% of 4 decks -4% synergy
Mana Artifacts
Sol Ring
75% of 4 decks -9% synergy
Chrome Mox
50% of 4 decks +44% synergy
Lotus Petal
50% of 4 decks +43% synergy
Arcane Signet
50% of 4 decks -22% synergy
Mox Amber
25% of 4 decks +21% synergy
Mana Crypt
25% of 4 decks +16% synergy
Lands
Grove of the Burnwillows
100% of 1 decks +98% synergy
Fire-Lit Thicket
100% of 1 decks +95% synergy
Blackcleave Cliffs
100% of 1 decks +95% synergy
Graven Cairns
100% of 1 decks +92% synergy
Taiga
100% of 1 decks +87% synergy
Badlands
100% of 1 decks +86% synergy
Haunted Ridge
100% of 1 decks +84% synergy
Karplusan Forest
100% of 1 decks +83% synergy
Sulfurous Springs
100% of 1 decks +80% synergy
Spire Garden
100% of 1 decks +76% synergy
Ziatora's Proving Ground
100% of 1 decks +68% synergy
Smoldering Marsh
100% of 1 decks +68% synergy
Cinder Glade
100% of 1 decks +62% synergy
Blood Crypt
100% of 1 decks +61% synergy
Stomping Ground
100% of 1 decks +59% synergy
Llanowar Wastes
75% of 4 decks +49% synergy
Overgrown Tomb
75% of 4 decks +32% synergy
Mana Confluence
50% of 4 decks +43% synergy
City of Brass
50% of 4 decks +42% synergy
Twilight Mire
50% of 4 decks +40% synergy
Verdant Catacombs
50% of 4 decks +39% synergy
Bayou
50% of 4 decks +36% synergy
Undergrowth Stadium
50% of 4 decks +24% synergy
Command Tower
50% of 4 decks -24% synergy
Urza's Cave
33% of 3 decks +29% synergy
Blooming Marsh
25% of 4 decks +21% synergy
Gemstone Caverns
25% of 4 decks +20% synergy
Woodland Chasm
25% of 4 decks +20% synergy
Prismatic Vista
25% of 4 decks +19% synergy
Nurturing Peatland
25% of 4 decks +19% synergy
Wooded Foothills
25% of 4 decks +15% synergy
Bloodstained Mire
25% of 4 decks +15% synergy
Windswept Heath
25% of 4 decks +15% synergy
Marsh Flats
25% of 4 decks +14% synergy
Deathcap Glade
25% of 4 decks +11% synergy
Woodland Cemetery
25% of 4 decks -3% synergy