Experiment Kraj + Devoted Druid + Benevolent Hydra

Experiment Kraj
Devoted Druid
Benevolent Hydra

Requires
Experiment Kraj must be on the battlefield. Devoted Druid must be on the battlefield. Benevolent Hydra 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
0.43% of 1175 decks 5 decks
Falco Spara, Pactweaver
0.04% of 4604 decks 2 decks
Vorel of the Hull Clade
0.10% of 2089 decks 2 decks
Xavier Sal, Infested Captain
0.02% of 4715 decks 1 decks
Tanazir Quandrix
0.12% of 862 decks 1 decks
Galadriel, Light of Valinor
0.01% of 8399 decks 1 decks
Bjorna, Nightfall Alchemist // Elmar, Ulvenwald Informant
0.17% of 584 decks 1 decks
Zaxara, the Exemplary
0.01% of 12060 decks 1 decks
Tazri, Stalwart Survivor
0.05% of 1861 decks 1 decks
Momir Vig, Simic Visionary
0.10% of 1019 decks 1 decks
Ezuri, Claw of Progress
0.02% of 6313 decks 1 decks
The Wise Mothman
0.01% of 13356 decks 1 decks
Volo, Itinerant Scholar // Master Chef
0.18% of 564 decks 1 decks
High Synergy Cards
Hardened Scales
89% of 19 decks +80% synergy
Kami of Whispered Hopes
88% of 16 decks +80% synergy
Gyre Sage
79% of 19 decks +75% synergy
Incubation Druid
79% of 19 decks +74% synergy
Fathom Mage
74% of 19 decks +70% synergy
Master Biomancer
68% of 19 decks +65% synergy
Simic Ascendancy
63% of 19 decks +58% synergy
Inspiring Call
63% of 19 decks +56% synergy
The Ozolith
58% of 19 decks +54% synergy
Branching Evolution
58% of 19 decks +53% synergy
Top Cards
Birds of Paradise
63% of 19 decks +36% synergy
Forgotten Ancient
58% of 19 decks +52% synergy
Ozolith, the Shattered Spire
56% of 16 decks +50% synergy
Sage of Hours
53% of 19 decks +52% synergy
Rishkar, Peema Renegade
53% of 19 decks +48% synergy
Simic Manipulator
47% of 19 decks +47% synergy
Thousand-Year Elixir
47% of 19 decks +45% synergy
Herald of Secret Streams
47% of 19 decks +45% synergy
Doubling Season
47% of 19 decks +38% synergy
Agatha's Soul Cauldron
43% of 14 decks +41% synergy
Creatures
Winding Constrictor
75% of 4 decks +71% synergy
Vigean Graftmage
42% of 19 decks +42% synergy
Gilder Bairn
42% of 19 decks +42% synergy
Zameck Guildmage
42% of 19 decks +42% synergy
Biophagus
42% of 19 decks +40% synergy
Walking Ballista
42% of 19 decks +40% synergy
Hydroid Krasis
42% of 19 decks +37% synergy
Kiora's Follower
42% of 19 decks +36% synergy
Cytoplast Manipulator
37% of 19 decks +37% synergy
Vorel of the Hull Clade
37% of 19 decks +34% synergy
Kodama of the West Tree
37% of 19 decks +33% synergy
Benthic Biomancer
32% of 19 decks +31% synergy
Vorinclex, Monstrous Raider
32% of 19 decks +28% synergy
Murkfiend Liege
32% of 19 decks +28% synergy
Champion of Lambholt
32% of 19 decks +25% synergy
The Thirteenth Doctor
31% of 13 decks +29% synergy
Ioreth of the Healing House
27% of 15 decks +25% synergy
Pir, Imaginative Rascal
26% of 19 decks +25% synergy
Tyranid Prime
26% of 19 decks +25% synergy
Prime Speaker Zegana
26% of 19 decks +24% synergy
Kalonian Hydra
26% of 19 decks +23% synergy
Managorger Hydra
26% of 19 decks +22% synergy
Bloom Tender
26% of 19 decks +18% synergy
Thornling
21% of 19 decks +21% synergy
Horseshoe Crab
21% of 19 decks +21% synergy
Toothy, Imaginary Friend
21% of 19 decks +20% synergy
Plaxcaster Frogling
21% of 19 decks +20% synergy
Glen Elendra Archmage
21% of 19 decks +19% synergy
Biomancer's Familiar
21% of 19 decks +19% synergy
Thrummingbird
21% of 19 decks +17% synergy
Selvala, Heart of the Wilds
21% of 19 decks +16% synergy
Evolution Sage
21% of 19 decks +14% synergy
Seedborn Muse
21% of 19 decks +13% synergy
Llanowar Elves
21% of 19 decks +0% synergy
Ezuri, Stalker of Spheres
18% of 17 decks +14% synergy
Leech Bonder
16% of 19 decks +16% synergy
Morphling
16% of 19 decks +16% synergy
Simic Ragworm
16% of 19 decks +16% synergy
Aeve, Progenitor Ooze
16% of 19 decks +15% synergy
Pili-Pala
16% of 19 decks +15% synergy
Experiment One
16% of 19 decks +15% synergy
Sharktocrab
16% of 19 decks +15% synergy
Viridian Joiner
16% of 19 decks +15% synergy
Slogurk, the Overslime
16% of 19 decks +15% synergy
Hangarback Walker
16% of 19 decks +15% synergy
Gyre Engineer
16% of 19 decks +15% synergy
Arcanis the Omnipotent
16% of 19 decks +14% synergy
Slippery Bogbonder
16% of 19 decks +14% synergy
Duskshell Crawler
16% of 19 decks +14% synergy
Marwyn, the Nurturer
16% of 19 decks +13% synergy
Instants
Counterspell
42% of 19 decks -1% synergy
Bioshift
37% of 19 decks +36% synergy
Cyclonic Rift
37% of 19 decks +9% synergy
Vastwood Fortification
32% of 19 decks +31% synergy
Snakeskin Veil
32% of 19 decks +27% synergy
Heroic Intervention
32% of 19 decks +2% synergy
Beast Within
32% of 19 decks -7% synergy
Slip Out the Back
26% of 19 decks +24% synergy
Brainstorm
26% of 19 decks +5% synergy
Serum Snare
25% of 16 decks +24% synergy
Negate
21% of 19 decks -2% synergy
Plasm Capture
16% of 19 decks +14% synergy
Silkguard
16% of 19 decks +14% synergy
Voidslime
16% of 19 decks +14% synergy
Rapid Hybridization
16% of 19 decks +6% synergy
Pongify
16% of 19 decks +4% synergy
An Offer You Can't Refuse
16% of 19 decks -5% synergy
Sorceries
Damning Verdict
75% of 4 decks +73% synergy
Cultivate
32% of 19 decks -15% synergy
Tezzeret's Gambit
26% of 19 decks +23% synergy
Kodama's Reach
21% of 19 decks -10% synergy
Body of Research
16% of 19 decks +15% synergy
Turntimber Symbiosis
16% of 19 decks +14% synergy
Neoform
16% of 19 decks +11% synergy
Green Sun's Zenith
16% of 19 decks +10% synergy
Three Visits
16% of 19 decks -9% synergy
Nature's Lore
16% of 19 decks -16% synergy
Farseek
16% of 19 decks -18% synergy
Utility Artifacts
The Great Henge
42% of 19 decks +32% synergy
Swiftfoot Boots
37% of 19 decks +9% synergy
Illusionist's Bracers
32% of 19 decks +30% synergy
Darksteel Reactor
16% of 19 decks +16% synergy
Contagion Clasp
16% of 19 decks +14% synergy
Lightning Greaves
16% of 19 decks -10% synergy
Enchantments
Brokers Ascendancy
75% of 4 decks +68% synergy
Bred for the Hunt
32% of 19 decks +29% synergy
Tribute to the World Tree
31% of 16 decks +23% synergy
Court of Garenbrig
25% of 12 decks +22% synergy
Mystic Remora
21% of 19 decks +3% synergy
Long List of the Ents
19% of 16 decks +18% synergy
Inexorable Tide
16% of 19 decks +13% synergy
Planeswalkers
Jiang Yanggu, Wildcrafter
16% of 19 decks +15% synergy
Kiora, Behemoth Beckoner
16% of 19 decks +12% synergy
Utility Lands
Oran-Rief, the Vastwood
47% of 19 decks +42% synergy
Karn's Bastion
37% of 19 decks +32% synergy
Otawara, Soaring City
37% of 19 decks +20% synergy
Boseiju, Who Endures
37% of 19 decks +17% synergy
Llanowar Reborn
32% of 19 decks +30% synergy
Minamo, School at Water's Edge
32% of 19 decks +27% synergy
Alchemist's Refuge
26% of 19 decks +20% synergy
Yavimaya, Cradle of Growth
26% of 19 decks +17% synergy
Mosswort Bridge
26% of 19 decks +16% synergy
Novijen, Heart of Progress
21% of 19 decks +20% synergy
Maze of Ith
21% of 19 decks +18% synergy
Gaea's Cradle
21% of 19 decks +15% synergy
Reliquary Tower
21% of 19 decks -9% synergy
Nesting Grounds
16% of 19 decks +14% synergy
Dryad Arbor
16% of 19 decks +12% synergy
Rogue's Passage
16% of 19 decks -4% synergy
Mana Artifacts
Sol Ring
89% of 19 decks +5% synergy
Arcane Signet
53% of 19 decks -20% synergy
Simic Signet
26% of 19 decks +12% synergy
Liquimetal Torque
16% of 19 decks +12% synergy
Lands
Spara's Headquarters
100% of 4 decks +68% synergy
Hallowed Fountain
100% of 4 decks +59% synergy
Command Tower
95% of 19 decks +21% synergy
Temple Garden
75% of 4 decks +35% synergy
Breeding Pool
68% of 19 decks +27% synergy
Misty Rainforest
53% of 19 decks +41% synergy
Flooded Grove
47% of 19 decks +35% synergy
Simic Growth Chamber
47% of 19 decks +28% synergy
Hinterland Harbor
47% of 19 decks +20% synergy
Rejuvenating Springs
47% of 19 decks +19% synergy
Exotic Orchard
47% of 19 decks +12% synergy
Overflowing Basin
43% of 7 decks +32% synergy
Barkchannel Pathway
37% of 19 decks +28% synergy
Yavimaya Coast
37% of 19 decks +10% synergy
Reflecting Pool
32% of 19 decks +26% synergy
Waterlogged Grove
32% of 19 decks +24% synergy
Fabled Passage
32% of 19 decks +22% synergy
Dreamroot Cascade
32% of 19 decks +13% synergy
Windswept Heath
26% of 19 decks +16% synergy
Temple of Mystery
26% of 19 decks +9% synergy
Prismatic Vista
21% of 19 decks +16% synergy
Wooded Foothills
21% of 19 decks +11% synergy
Vineglimmer Snarl
21% of 19 decks +11% synergy
Flooded Strand
21% of 19 decks +10% synergy
Scalding Tarn
21% of 19 decks +10% synergy
Verdant Catacombs
21% of 19 decks +10% synergy
Tropical Island
21% of 19 decks +7% synergy
Littjara Mirrorlake
16% of 19 decks +14% synergy
Mana Confluence
16% of 19 decks +8% synergy
City of Brass
16% of 19 decks +8% synergy