Experiment Kraj + Devoted Druid + Primal Vigor

Experiment Kraj
Devoted Druid
Primal Vigor

Requires
Experiment Kraj must be on the battlefield. Devoted Druid must be on the battlefield. Primal Vigor must be on the battlefield. Experiment Kraj does not have summoning sickness.
Steps
  1. Activate Experiment Kraj by tapping it, putting two +1/+1 counters onto Devoted Druid.
  2. Activate Experiment Kraj using Devoted Druid's last ability by putting a -1/-1 counter on itself, untapping it.
  3. Activate Experiment Kraj's own ability, putting two +1/+1 counters on itself.
  4. Remove the -1/-1 counter and one of the +1/+1 counters from Experiment Kraj as a state-based action.
  5. Repeat steps 2 through 4 any number of times, resulting in any number of +1/+1 counters on Experiment Kraj.
  6. Activate Experiment Kraj using Devoted Druid's last ability by putting a -1/-1 counter on itself, untapping it.
  7. Activate Experiment Kraj using Devoted Druid's first ability by tapping it, add .
  8. Repeat steps 6 and 7 any number of times.
  9. You may also activate Experiment Kraj's own ability any number of times instead of step 7, putting any number of +1/+1 counters onto creatures.
Results
Infinite +1/+1 counters. Infinite green mana.

Experiment Kraj
0.60% of 1176 decks 7 decks
Kros, Defense Contractor
0.13% of 2303 decks 3 decks
Ezuri, Claw of Progress
0.05% of 6258 decks 3 decks
Xavier Sal, Infested Captain
0.07% of 4399 decks 3 decks
Inga and Esika
0.12% of 1625 decks 2 decks
Esika, God of the Tree
0.01% of 17767 decks 1 decks
Falco Spara, Pactweaver
0.02% of 4602 decks 1 decks
Tanazir Quandrix
0.12% of 860 decks 1 decks
Esix, Fractal Bloom
0.03% of 3180 decks 1 decks
Vorel of the Hull Clade
0.05% of 2082 decks 1 decks
The Mimeoplasm
0.02% of 5780 decks 1 decks
High Synergy Cards
Grateful Apparition
80% of 5 decks +78% synergy
Master Biomancer
58% of 24 decks +55% synergy
Fathom Mage
58% of 24 decks +54% synergy
Gyre Sage
54% of 24 decks +50% synergy
Hardened Scales
58% of 24 decks +49% synergy
Incubation Druid
54% of 24 decks +49% synergy
Forgotten Ancient
54% of 24 decks +48% synergy
Kami of Whispered Hopes
56% of 18 decks +48% synergy
Ozolith, the Shattered Spire
50% of 18 decks +44% synergy
Rishkar, Peema Renegade
46% of 24 decks +41% synergy
Top Cards
Counterspell
67% of 24 decks +24% synergy
Rampant Growth
46% of 24 decks +11% synergy
Beast Within
46% of 24 decks +7% synergy
Zameck Guildmage
42% of 24 decks +41% synergy
Vorel of the Hull Clade
42% of 24 decks +39% synergy
Branching Evolution
42% of 24 decks +37% synergy
Simic Ascendancy
42% of 24 decks +36% synergy
Cultivate
42% of 24 decks -5% synergy
Ezuri, Stalker of Spheres
40% of 20 decks +36% synergy
Evolution Sage
38% of 24 decks +30% synergy
Creatures
Nils, Discipline Enforcer
60% of 5 decks +59% synergy
Filigree Vector
60% of 5 decks +59% synergy
Kutzil, Malamet Exemplar
60% of 5 decks +41% synergy
Thrummingbird
33% of 24 decks +30% synergy
Murkfiend Liege
33% of 24 decks +29% synergy
Cytoplast Manipulator
29% of 24 decks +29% synergy
Sage of Hours
29% of 24 decks +29% synergy
Fertilid
29% of 24 decks +27% synergy
Adrix and Nev, Twincasters
29% of 24 decks +24% synergy
Kiora's Follower
29% of 24 decks +23% synergy
Tekuthal, Inquiry Dominus
26% of 19 decks +23% synergy
Vigean Graftmage
25% of 24 decks +25% synergy
Viridian Joiner
25% of 24 decks +24% synergy
Prime Speaker Zegana
25% of 24 decks +22% synergy
Herald of Secret Streams
25% of 24 decks +22% synergy
Kalonian Hydra
25% of 24 decks +22% synergy
Gilder Bairn
21% of 24 decks +21% synergy
Simic Manipulator
21% of 24 decks +21% synergy
Krosan Restorer
21% of 24 decks +21% synergy
Pili-Pala
21% of 24 decks +20% synergy
Momir Vig, Simic Visionary
21% of 24 decks +20% synergy
Arcanis the Omnipotent
21% of 24 decks +20% synergy
Plaxcaster Frogling
21% of 24 decks +19% synergy
Scurry Oak
21% of 24 decks +19% synergy
Vigor
21% of 24 decks +18% synergy
Flux Channeler
21% of 24 decks +18% synergy
Chasm Skulker
21% of 24 decks +17% synergy
Champion of Lambholt
21% of 24 decks +14% synergy
Scute Swarm
21% of 24 decks +11% synergy
Kodama of the West Tree
18% of 22 decks +14% synergy
Horseshoe Crab
17% of 24 decks +16% synergy
Toothy, Imaginary Friend
17% of 24 decks +16% synergy
Pir, Imaginative Rascal
17% of 24 decks +16% synergy
Roalesk, Apex Hybrid
17% of 24 decks +16% synergy
Ivy Lane Denizen
17% of 24 decks +15% synergy
Renata, Called to the Hunt
17% of 24 decks +14% synergy
Avenger of Zendikar
17% of 24 decks +7% synergy
Elvish Mystic
17% of 24 decks -1% synergy
Llanowar Elves
17% of 24 decks -4% synergy
Birds of Paradise
17% of 24 decks -10% synergy
Tainted Observer
16% of 19 decks +14% synergy
Cankerbloom
16% of 19 decks +9% synergy
Park Heights Maverick
14% of 22 decks +13% synergy
Morphling
12% of 24 decks +12% synergy
Farmstead Gleaner
12% of 24 decks +12% synergy
Crystalline Crawler
12% of 24 decks +12% synergy
Argothian Elder
12% of 24 decks +12% synergy
Triskelion
12% of 24 decks +12% synergy
Oran-Rief Ooze
12% of 24 decks +12% synergy
Generous Patron
12% of 24 decks +12% synergy
Instants
Generous Gift
60% of 5 decks +34% synergy
Pongify
29% of 24 decks +18% synergy
An Offer You Can't Refuse
27% of 22 decks +7% synergy
Growth Spiral
25% of 24 decks +3% synergy
Negate
25% of 24 decks +2% synergy
Inspiring Call
21% of 24 decks +13% synergy
Krosan Grip
21% of 24 decks +13% synergy
Plasm Capture
17% of 24 decks +15% synergy
Voidslime
17% of 24 decks +15% synergy
Arcane Denial
17% of 24 decks -3% synergy
Heroic Intervention
17% of 24 decks -13% synergy
Experimental Augury
16% of 19 decks +13% synergy
Fuel for the Cause
12% of 24 decks +12% synergy
Rapid Hybridization
12% of 24 decks +3% synergy
Worldly Tutor
12% of 24 decks -2% synergy
Sorceries
Aggressive Biomancy
38% of 8 decks +34% synergy
Tezzeret's Gambit
29% of 24 decks +26% synergy
Kodama's Reach
25% of 24 decks -7% synergy
Farseek
25% of 24 decks -9% synergy
Unnatural Restoration
21% of 19 decks +17% synergy
Curse of the Swine
21% of 24 decks +16% synergy
Three Visits
21% of 24 decks -4% synergy
Thirsting Roots
16% of 19 decks +13% synergy
Urban Evolution
12% of 24 decks +8% synergy
Neoform
12% of 24 decks +7% synergy
Nature's Lore
12% of 24 decks -20% synergy
Utility Artifacts
Illusionist's Bracers
25% of 24 decks +24% synergy
Lightning Greaves
25% of 24 decks -0% synergy
Contagion Engine
21% of 24 decks +20% synergy
Swiftfoot Boots
21% of 24 decks -7% synergy
Staff of Domination
17% of 24 decks +15% synergy
The Ozolith
17% of 24 decks +13% synergy
Umbral Mantle
12% of 24 decks +12% synergy
Sword of Truth and Justice
12% of 24 decks +11% synergy
Contagion Clasp
12% of 24 decks +11% synergy
Thousand-Year Elixir
12% of 24 decks +10% synergy
Enchantments
Doubling Season
38% of 24 decks +29% synergy
Freed from the Real
33% of 24 decks +31% synergy
Inexorable Tide
33% of 24 decks +31% synergy
Court of Garenbrig
31% of 16 decks +28% synergy
Parallel Lives
21% of 24 decks +14% synergy
Garruk's Uprising
21% of 24 decks +6% synergy
Tribute to the World Tree
17% of 18 decks +8% synergy
Verity Circle
12% of 24 decks +12% synergy
Mana Reflection
12% of 24 decks +11% synergy
Intruder Alarm
12% of 24 decks +10% synergy
Bred for the Hunt
12% of 24 decks +10% synergy
Asceticism
12% of 24 decks +10% synergy
Wizard Class
12% of 24 decks +8% synergy
Utopia Sprawl
12% of 24 decks +5% synergy
Utility Lands
Reliquary Tower
50% of 24 decks +21% synergy
Karn's Bastion
46% of 24 decks +41% synergy
Oran-Rief, the Vastwood
38% of 24 decks +33% synergy
Novijen, Heart of Progress
33% of 24 decks +32% synergy
Llanowar Reborn
29% of 24 decks +27% synergy
Rogue's Passage
29% of 24 decks +10% synergy
Nesting Grounds
25% of 24 decks +24% synergy
Alchemist's Refuge
25% of 24 decks +18% synergy
Mosswort Bridge
21% of 24 decks +10% synergy
Tyrite Sanctum
12% of 24 decks +11% synergy
Minamo, School at Water's Edge
12% of 24 decks +8% synergy
Mana Artifacts
Sol Ring
92% of 24 decks +7% synergy
Arcane Signet
67% of 24 decks -5% synergy
Simic Signet
25% of 24 decks +10% synergy
Thought Vessel
25% of 24 decks +8% synergy
Everflowing Chalice
17% of 24 decks +12% synergy
Replicating Ring
12% of 24 decks +11% synergy
Fellwar Stone
12% of 24 decks -9% synergy
Lands
Command Tower
92% of 24 decks +18% synergy
Dimir Aqueduct
80% of 5 decks +63% synergy
Golgari Rot Farm
80% of 5 decks +62% synergy
Opulent Palace
80% of 5 decks +53% synergy
Yavimaya Coast
71% of 24 decks +44% synergy
Llanowar Wastes
60% of 5 decks +34% synergy
Seaside Citadel
60% of 5 decks +34% synergy
Prairie Stream
60% of 5 decks +26% synergy
Canopy Vista
60% of 5 decks +24% synergy
Hinterland Harbor
58% of 24 decks +31% synergy
Temple of Mystery
54% of 24 decks +37% synergy
Simic Growth Chamber
54% of 24 decks +34% synergy
Dreamroot Cascade
50% of 24 decks +31% synergy
Rejuvenating Springs
50% of 24 decks +21% synergy
Exotic Orchard
50% of 24 decks +14% synergy
Flooded Grove
42% of 24 decks +30% synergy
Path of Ancestry
38% of 24 decks +16% synergy
Myriad Landscape
29% of 24 decks +9% synergy
Breeding Pool
29% of 24 decks -12% synergy
Evolving Wilds
25% of 24 decks +4% synergy
Thornwood Falls
21% of 24 decks +14% synergy
Terramorphic Expanse
21% of 24 decks +5% synergy
Vivid Grove
17% of 24 decks +15% synergy
Vineglimmer Snarl
17% of 24 decks +6% synergy
Brokers Hideout
14% of 22 decks +12% synergy
Vivid Creek
12% of 24 decks +11% synergy
Littjara Mirrorlake
12% of 24 decks +11% synergy
Botanical Sanctum
12% of 24 decks +9% synergy
Waterlogged Grove
12% of 24 decks +5% synergy
Misty Rainforest
12% of 24 decks +1% synergy