Scaretiller + Cacophodon + Viridian Longbow + Roaring Earth + Riveteers Overlook

Scaretiller
Cacophodon
Viridian Longbow
Roaring Earth
Riveteers Overlook

Requires
Scaretiller must be on the battlefield. Cacophodon must be on the battlefield. Viridian Longbow must be on the battlefield. Roaring Earth must be on the battlefield. Riveteers Overlook must be in the graveyard. Viridian Longbow attached to Scaretiller. Scaretiller does not have summoning sickness.
Steps
  1. Activate Scaretiller by tapping it, targeting Cacophodon.
  2. Scaretiller triggers, returning Riveteers Overlook from your graveyard to the battlefield tapped.
  3. Riveteers Overlook enters the battlefield, triggering itself and Roaring Earth.
  4. Resolve the Roaring Earth trigger, putting a +1/+1 counter on Cacophodon.
  5. Resolve the Riveteers Overlook trigger, causing you to sacrifice it and search your library for a basic Mountain, Swamp or Forest and put it onto the battlefield tapped.
  6. If you put a land onto the battlefield this way, Roaring Earth triggers, putting a +1/+1 counter on a creature you control.
  7. Resolve the Scaretiller ability from step 1, dealing 1 damage to Cacophodon.
  8. Cacophodon triggers, untapping Scaretiller.
  9. Repeat.
Results
Infinite +1/+1 counters on Cacophodon. Infinite landfall triggers. Put all basic Swamps, Forests, and Mountains from your library onto the battlefield.

Strong, the Brutish Thespian
0.27% of 366 decks 1 decks
Strider, Ranger of the North
0.98% of 102 decks 1 decks
Omnath, Locus of Rage
0.01% of 7098 decks 1 decks
Creatures
Éomer of the Riddermark
100% of 1 decks +100% synergy
Erkenbrand, Lord of Westfold
100% of 1 decks +99% synergy
Whiskerquill Scribe
100% of 1 decks +99% synergy
Gimli, Counter of Kills
100% of 1 decks +99% synergy
Mistbreath Elder
100% of 1 decks +99% synergy
Kindlespark Duo
100% of 1 decks +98% synergy
Mina and Denn, Wildborn
100% of 2 decks +95% synergy
Ramunap Excavator
67% of 3 decks +60% synergy
Lotus Cobra
67% of 3 decks +59% synergy
Needlepeak Spider
50% of 2 decks +50% synergy
Lavakin Brawler
50% of 2 decks +50% synergy
Chandra's Pyreling
50% of 2 decks +50% synergy
Brushfire Elemental
50% of 2 decks +50% synergy
Dúnedain Rangers
50% of 2 decks +50% synergy
Toggo, Goblin Weaponsmith
50% of 2 decks +49% synergy
Harold and Bob, First Numens
50% of 2 decks +49% synergy
Spitfire Lagac
50% of 2 decks +49% synergy
Tunneling Geopede
50% of 2 decks +49% synergy
Living Twister
50% of 2 decks +49% synergy
Leyline Tyrant
50% of 2 decks +49% synergy
Prize Pig
50% of 2 decks +49% synergy
Geode Rager
50% of 2 decks +49% synergy
Glowing One
50% of 2 decks +48% synergy
Tato Farmer
50% of 2 decks +48% synergy
Moraug, Fury of Akoum
50% of 2 decks +47% synergy
Karlach, Fury of Avernus
50% of 2 decks +47% synergy
Aftermath Analyst
50% of 2 decks +46% synergy
Young Pyromancer
50% of 2 decks +45% synergy
Omnath, Locus of Rage
50% of 2 decks +45% synergy
Goblin Anarchomancer
50% of 2 decks +36% synergy
Thorn Thallid
33% of 3 decks +33% synergy
Overgrowth Elemental
33% of 3 decks +33% synergy
Lesser Masticore
33% of 3 decks +33% synergy
Ageless Entity
33% of 3 decks +33% synergy
Hua Tuo, Honored Physician
33% of 3 decks +33% synergy
Vinelasher Kudzu
33% of 3 decks +33% synergy
Thicket Crasher
33% of 3 decks +33% synergy
Nylea's Forerunner
33% of 3 decks +33% synergy
Stone-Seeder Hierophant
33% of 3 decks +33% synergy
Kazandu Mammoth
33% of 3 decks +33% synergy
Triskelion
33% of 3 decks +33% synergy
Territorial Scythecat
33% of 3 decks +33% synergy
Pollenbright Druid
33% of 3 decks +32% synergy
Endbringer
33% of 3 decks +32% synergy
Scryb Ranger
33% of 3 decks +32% synergy
Titania, Nature's Force
33% of 3 decks +32% synergy
Titania, Voice of Gaea
33% of 3 decks +32% synergy
Yavimaya Elder
33% of 3 decks +32% synergy
Druid of Purification
33% of 3 decks +32% synergy
Shigeki, Jukai Visionary
33% of 3 decks +31% synergy
Instants
Friendly Rivalry
100% of 1 decks +99% synergy
Dead // Gone
50% of 2 decks +50% synergy
Temur Battle Rage
50% of 2 decks +48% synergy
Archdruid's Charm
50% of 2 decks +43% synergy
Entish Restoration
50% of 2 decks +42% synergy
Thrill of Possibility
50% of 2 decks +40% synergy
Chaos Warp
50% of 2 decks +18% synergy
Barrier Breach
33% of 3 decks +33% synergy
Blessed Respite
33% of 3 decks +32% synergy
Grapple with the Past
33% of 3 decks +32% synergy
Khalni Ambush
33% of 3 decks +31% synergy
Fog
33% of 3 decks +31% synergy
Hunter's Insight
33% of 3 decks +29% synergy
Tamiyo's Safekeeping
33% of 3 decks +27% synergy
Harrow
33% of 3 decks +24% synergy
Return of the Wildspeaker
33% of 3 decks +20% synergy
Sorceries
Ground Assault
100% of 2 decks +100% synergy
Stump Stomp
100% of 1 decks +91% synergy
Migration Path
67% of 3 decks +63% synergy
Explore
67% of 3 decks +58% synergy
Cultivate
67% of 3 decks +20% synergy
Arc Blade
50% of 2 decks +50% synergy
Struggle // Survive
50% of 2 decks +50% synergy
Nahiri's Lithoforming
50% of 2 decks +49% synergy
The Ring Goes South
50% of 2 decks +49% synergy
Faithless Looting
50% of 2 decks +33% synergy
Recollect
33% of 3 decks +33% synergy
Road of Return
33% of 3 decks +33% synergy
Scale the Heights
33% of 3 decks +33% synergy
Creeping Renaissance
33% of 3 decks +33% synergy
Planewide Celebration
33% of 3 decks +33% synergy
Far Wanderings
33% of 3 decks +32% synergy
Summer Bloom
33% of 3 decks +32% synergy
Smell Fear
33% of 3 decks +32% synergy
Animist's Awakening
33% of 3 decks +32% synergy
Regrowth
33% of 3 decks +30% synergy
Splendid Reclamation
33% of 3 decks +30% synergy
Tempt with Discovery
33% of 3 decks +30% synergy
Awaken the Woods
33% of 3 decks +30% synergy
Unnatural Restoration
33% of 3 decks +29% synergy
Bala Ged Recovery
33% of 3 decks +24% synergy
Skyshroud Claim
33% of 3 decks +24% synergy
Three Visits
33% of 3 decks +9% synergy
Kodama's Reach
33% of 3 decks +2% synergy
Nature's Lore
33% of 3 decks +1% synergy
Rampant Growth
33% of 3 decks -1% synergy
Utility Artifacts
Doors of Durin
100% of 1 decks +97% synergy
Skyclave Pick-Axe
67% of 3 decks +67% synergy
Nuka-Nuke Launcher
50% of 2 decks +50% synergy
Hidden Blade
50% of 2 decks +49% synergy
Andúril, Narsil Reforged
50% of 2 decks +49% synergy
Rod of Ruin
33% of 3 decks +33% synergy
Bullwhip
33% of 3 decks +33% synergy
Retributive Wand
33% of 3 decks +33% synergy
Rocket Launcher
33% of 3 decks +33% synergy
Pathway Arrows
33% of 3 decks +33% synergy
Acorn Catapult
33% of 3 decks +33% synergy
Caltrops
33% of 3 decks +33% synergy
Staff of Nin
33% of 3 decks +33% synergy
Horn of Greed
33% of 3 decks +33% synergy
Dolmen Gate
33% of 3 decks +32% synergy
Clock of Omens
33% of 3 decks +32% synergy
Contagion Clasp
33% of 3 decks +32% synergy
Well of Lost Dreams
33% of 3 decks +32% synergy
Crucible of Worlds
33% of 3 decks +31% synergy
Sword of the Animist
33% of 3 decks +29% synergy
Conduit of Worlds
33% of 3 decks +27% synergy
Lightning Greaves
33% of 3 decks +8% synergy
Swiftfoot Boots
33% of 3 decks +5% synergy
Enchantments
Fiery Inscription
100% of 1 decks +96% synergy
City on Fire
100% of 1 decks +95% synergy
Rising of the Day
100% of 1 decks +94% synergy
Retreat to Valakut
50% of 2 decks +50% synergy
Stranglehold
50% of 2 decks +49% synergy
Valakut Exploration
50% of 2 decks +48% synergy
Splintering Wind
33% of 3 decks +33% synergy
Trudge Garden
33% of 3 decks +33% synergy
The Mending of Dominaria
33% of 3 decks +32% synergy
Khalni Heart Expedition
33% of 3 decks +31% synergy
Rites of Flourishing
33% of 3 decks +31% synergy
Zendikar Resurgent
33% of 3 decks +31% synergy
Zendikar's Roil
33% of 3 decks +31% synergy
Growing Rites of Itlimoc
33% of 3 decks +28% synergy
Exploration
33% of 3 decks +25% synergy
Planeswalkers
Wrenn and Realmbreaker
33% of 3 decks +31% synergy
Nissa, Who Shakes the World
33% of 3 decks +30% synergy
Utility Lands
Yavimaya, Cradle of Growth
67% of 3 decks +57% synergy
Mariposa Military Base
50% of 2 decks +49% synergy
Kessig Wolf Run
50% of 2 decks +34% synergy
Argoth, Sanctum of Nature
33% of 3 decks +31% synergy
Tyrite Sanctum
33% of 3 decks +31% synergy
Bonders' Enclave
33% of 3 decks +31% synergy
Karn's Bastion
33% of 3 decks +28% synergy
War Room
33% of 3 decks +27% synergy
Temple of the False God
33% of 3 decks +24% synergy
Rogue's Passage
33% of 3 decks +14% synergy
Mana Artifacts
Gruul Signet
100% of 2 decks +88% synergy
Sol Ring
67% of 3 decks -18% synergy
Heraldic Banner
33% of 3 decks +32% synergy
Arcane Signet
33% of 3 decks -39% synergy
Lands
Cabaretti Courtyard
67% of 3 decks +65% synergy
Blighted Woodland
67% of 3 decks +61% synergy
Game Trail
50% of 2 decks +34% synergy
Gruul Turf
50% of 2 decks +34% synergy
Rockfall Vale
50% of 2 decks +28% synergy
Rootbound Crag
50% of 2 decks +26% synergy
Cinder Glade
50% of 2 decks +12% synergy
Uncharted Haven
33% of 3 decks +33% synergy
Brokers Hideout
33% of 3 decks +32% synergy
Terramorphic Expanse
33% of 3 decks +18% synergy
Myriad Landscape
33% of 3 decks +14% synergy
Command Tower
33% of 3 decks -41% synergy