Snarling Gorehound + Insidious Roots + Desecrated Tomb + Moss-Pit Skeleton

Snarling Gorehound
Insidious Roots
Desecrated Tomb
Moss-Pit Skeleton

Requires
Snarling Gorehound must be on the battlefield. Insidious Roots must be on the battlefield. Desecrated Tomb must be on the battlefield. Moss-Pit Skeleton must be in the graveyard. You have a way to put a +1/+1 counter on a creature you control.
Steps
  1. Put a +1/+1 counter on a creature you control.
  2. Moss-Pit Skeleton triggers, putting itself on top of your library.
  3. Desecrated Tomb and Insidious Roots trigger.
  4. Resolve the Desecrated Tomb trigger, creating a 1/1 Bat creature token.
  5. When the Bat enters the battlefield, Snarling Gorehound triggers, causing you to surveil 1, putting Moss-Pit Skeleton into your graveyard from the top of your library.
  6. Resolve the Insidious Roots trigger, creating a 0/1 Plant creature token, then putting a +1/+1 counter on each Plant you control.
  7. Moss-Pit Skeleton and Snarling Gorehound trigger.
  8. Resolve the Snarling Gorehound trigger, causing you to surveil 1.
  9. Resolve the Moss-Pit Skeleton trigger, putting it on top of your library.
  10. Repeat from step 3.
Results
Infinite +1/+1 counters on Plants you control. Infinite creature tokens. Infinite ETB. Infinite surveil.

Coram, the Undertaker
0.05% of 4130 decks 2 decks
Izoni, Center of the Web
0.46% of 432 decks 2 decks
Kamahl, Heart of Krosa // Tormod, the Desecrator
1.45% of 138 decks 2 decks
Sidisi, Brood Tyrant
0.02% of 6377 decks 1 decks
Amzu, Swarm's Hunger
0.13% of 774 decks 1 decks
Meren of Clan Nel Toth
0.01% of 15166 decks 1 decks
Ziatora, the Incinerator
0.01% of 8061 decks 1 decks
The Necrobloom
0.01% of 10238 decks 1 decks
Savra, Queen of the Golgari
0.03% of 2911 decks 1 decks
Sidar Kondo of Jamuraa // Tormod, the Desecrator
0.56% of 177 decks 1 decks
Varolz, the Scar-Striped
0.08% of 1295 decks 1 decks
Karador, Ghost Chieftain
0.02% of 5423 decks 1 decks
High Synergy Cards
Chalk Outline
80% of 15 decks +80% synergy
Ripples of Undeath
71% of 7 decks +65% synergy
Skull Prophet
67% of 15 decks +62% synergy
Skeleton Crew
60% of 15 decks +59% synergy
Tormod, the Desecrator
60% of 15 decks +59% synergy
Tortured Existence
53% of 15 decks +52% synergy
Altar of Dementia
53% of 15 decks +51% synergy
Sakura-Tribe Elder
67% of 15 decks +48% synergy
Wight of the Reliquary
56% of 9 decks +47% synergy
Grist, Voracious Larva
50% of 8 decks +47% synergy
Top Cards
Assassin's Trophy
53% of 15 decks +23% synergy
Golgari Thug
47% of 15 decks +46% synergy
Golgari Grave-Troll
47% of 15 decks +45% synergy
Stitcher's Supplier
47% of 15 decks +44% synergy
Reassembling Skeleton
47% of 15 decks +43% synergy
Syr Konrad, the Grim
47% of 15 decks +38% synergy
Skullclamp
47% of 15 decks +34% synergy
Llanowar Elves
47% of 15 decks +26% synergy
Grist, the Hunger Tide
40% of 15 decks +36% synergy
Forsaken Miner
36% of 14 decks +34% synergy
Creatures
Hazel's Brewmaster
60% of 5 decks +56% synergy
Ygra, Eater of All
50% of 6 decks +45% synergy
Death-Priest of Myrkul
33% of 15 decks +33% synergy
Gutterbones
33% of 15 decks +33% synergy
Amzu, Swarm's Hunger
33% of 15 decks +32% synergy
Fauna Shaman
33% of 15 decks +30% synergy
Haywire Mite
33% of 15 decks +29% synergy
Aftermath Analyst
33% of 15 decks +29% synergy
Viscera Seer
33% of 15 decks +24% synergy
Deathrite Shaman
33% of 15 decks +21% synergy
Fyndhorn Elves
33% of 15 decks +20% synergy
Elvish Mystic
33% of 15 decks +16% synergy
Eternal Witness
33% of 15 decks +13% synergy
Ovalchase Daredevil
27% of 15 decks +27% synergy
Rot Farm Skeleton
27% of 15 decks +27% synergy
Champion of Stray Souls
27% of 15 decks +26% synergy
Cult Conscript
27% of 15 decks +26% synergy
Cauldron Familiar
27% of 15 decks +25% synergy
Fiend Artisan
27% of 15 decks +24% synergy
Mosswood Dreadknight
27% of 15 decks +24% synergy
Gilded Goose
27% of 15 decks +23% synergy
Nyx Weaver
27% of 15 decks +22% synergy
Incubation Druid
27% of 15 decks +22% synergy
Pitiless Plunderer
27% of 15 decks +19% synergy
Elves of Deep Shadow
27% of 15 decks +16% synergy
Birds of Paradise
27% of 15 decks -0% synergy
Deathless Knight
20% of 15 decks +20% synergy
Underworld Sentinel
20% of 15 decks +20% synergy
Paragon of Open Graves
20% of 15 decks +20% synergy
Skeletal Vampire
20% of 15 decks +20% synergy
Sanitarium Skeleton
20% of 15 decks +20% synergy
Hogaak, Arisen Necropolis
20% of 15 decks +19% synergy
Death Tyrant
20% of 15 decks +19% synergy
Ebondeath, Dracolich
20% of 15 decks +19% synergy
Persistent Specimen
20% of 15 decks +19% synergy
Dimir House Guard
20% of 15 decks +19% synergy
Undead Butler
20% of 15 decks +19% synergy
Stinkweed Imp
20% of 15 decks +19% synergy
Bloodghast
20% of 15 decks +18% synergy
Izoni, Thousand-Eyed
20% of 15 decks +18% synergy
Priest of Forgotten Gods
20% of 15 decks +18% synergy
Massacre Girl
20% of 15 decks +18% synergy
Gravecrawler
20% of 15 decks +17% synergy
Timeless Witness
20% of 15 decks +17% synergy
Underrealm Lich
20% of 15 decks +17% synergy
Yawgmoth, Thran Physician
20% of 15 decks +16% synergy
Kami of Whispered Hopes
20% of 15 decks +12% synergy
Blood Artist
20% of 15 decks +8% synergy
Mirkwood Bats
20% of 15 decks +8% synergy
Instants
Plumb the Forbidden
20% of 15 decks +17% synergy
Abrupt Decay
20% of 15 decks +9% synergy
Sorceries
Farseek
33% of 15 decks -1% synergy
Life from the Loam
27% of 15 decks +23% synergy
Dread Return
27% of 15 decks +21% synergy
Rampant Growth
27% of 15 decks -8% synergy
Cultivate
27% of 15 decks -19% synergy
Squirming Emergence
20% of 15 decks +17% synergy
Rise of the Witch-king
20% of 15 decks +14% synergy
Victimize
20% of 15 decks +8% synergy
Utility Artifacts
Witch's Oven
27% of 15 decks +26% synergy
The Underworld Cookbook
20% of 15 decks +20% synergy
Matzalantli, the Great Door
20% of 15 decks +19% synergy
Agatha's Soul Cauldron
20% of 15 decks +18% synergy
Thousand-Year Elixir
20% of 15 decks +18% synergy
Phyrexian Altar
20% of 15 decks +16% synergy
Enchantments
Corpses of the Lost
33% of 15 decks +33% synergy
Skeletal Swarming
33% of 15 decks +33% synergy
Soul Enervation
20% of 15 decks +20% synergy
Moldervine Reclamation
20% of 15 decks +11% synergy
Planeswalkers
Tyvar, Jubilant Brawler
33% of 15 decks +28% synergy
Utility Lands
Bojuka Bog
53% of 15 decks +23% synergy
Dakmor Salvage
33% of 15 decks +31% synergy
Grim Backwoods
27% of 15 decks +23% synergy
Urborg, Tomb of Yawgmoth
27% of 15 decks +17% synergy
Spawning Pool
20% of 15 decks +20% synergy
Geier Reach Sanitarium
20% of 15 decks +17% synergy
Barren Moor
20% of 15 decks +16% synergy
Urza's Saga
20% of 15 decks +13% synergy
Yavimaya, Cradle of Growth
20% of 15 decks +11% synergy
Takenuma, Abandoned Mire
20% of 15 decks +9% synergy
Mana Artifacts
Sol Ring
60% of 15 decks -24% synergy
Arcane Signet
33% of 15 decks -39% synergy
Talisman of Resilience
27% of 15 decks +15% synergy
Golgari Signet
20% of 15 decks +7% synergy
Lands
Sandsteppe Citadel
100% of 3 decks +74% synergy
Smoldering Marsh
100% of 3 decks +67% synergy
Cinder Glade
100% of 3 decks +62% synergy
Godless Shrine
100% of 3 decks +59% synergy
Command Tower
100% of 15 decks +26% synergy
Woodland Cemetery
73% of 15 decks +45% synergy
Overgrown Tomb
60% of 15 decks +18% synergy
Llanowar Wastes
53% of 15 decks +28% synergy
Underground Mortuary
47% of 15 decks +30% synergy
Golgari Rot Farm
47% of 15 decks +29% synergy
Necroblossom Snarl
40% of 15 decks +28% synergy
Undergrowth Stadium
40% of 15 decks +14% synergy
Twilight Mire
33% of 15 decks +23% synergy
Tainted Wood
33% of 15 decks +20% synergy
Temple of Malady
33% of 15 decks +17% synergy
Exotic Orchard
33% of 15 decks -2% synergy
Terramorphic Expanse
27% of 15 decks +11% synergy
Evolving Wilds
27% of 15 decks +6% synergy
Path of Ancestry
27% of 15 decks +5% synergy
Viridescent Bog
21% of 14 decks +10% synergy
Haunted Mire
20% of 15 decks +12% synergy
Fabled Passage
20% of 15 decks +11% synergy
Wooded Foothills
20% of 15 decks +10% synergy
Bloodstained Mire
20% of 15 decks +10% synergy
Verdant Catacombs
20% of 15 decks +9% synergy