Cathars' Crusade + Nest of Scarabs + Barrenton Medic

Cathars' Crusade
Nest of Scarabs
Barrenton Medic

Requires
Cathars' Crusade must be on the battlefield. Nest of Scarabs must be on the battlefield. Barrenton Medic must be on the battlefield. Barrenton Medic does not have summoning sickness. Barrenton Medic does not have more than two -1/-1 counters on it.
Steps
  1. Activate Barrenton Medic's first ability by tapping it, preventing the next one damage done to it this turn.
  2. Activate Barrenton Medic's second ability by putting a -1/-1 counter on it.
  3. Nest of Scarabs triggers, creating a 1/1 Insect creature token.
  4. The Insect enters the battlefield, triggering Cathars' Crusade, putting a +1/+1 counter on each creature you control.
  5. Resolve the Barrenton Medic ability from step 2, untapping it.
  6. Repeat.
Results
Infinite creature tokens. Infinite ETB. Infinite +1/+1 counters.

Atraxa, Praetors' Voice
0.00% of 35754 decks 1 decks
Vishgraz, the Doomhive
0.02% of 5632 decks 1 decks
Myrkul, Lord of Bones
0.01% of 7477 decks 1 decks
Carmen, Cruel Skymarcher
0.03% of 3300 decks 1 decks
Creatures
Kros, Defense Contractor
100% of 1 decks +100% synergy
Viral Drake
100% of 1 decks +99% synergy
Sludge Monster
100% of 1 decks +99% synergy
Glissa, Herald of Predation
100% of 1 decks +99% synergy
Blighted Agent
100% of 1 decks +98% synergy
Toxrill, the Corrosive
100% of 1 decks +97% synergy
Devoted Druid
100% of 3 decks +97% synergy
Peregrin Took
100% of 1 decks +95% synergy
Muldrotha, the Gravetide
100% of 1 decks +94% synergy
Ghalta and Mavren
100% of 1 decks +94% synergy
Cinderhaze Wretch
75% of 4 decks +75% synergy
Trostani, Selesnya's Voice
67% of 3 decks +64% synergy
Harbinger of Night
50% of 4 decks +50% synergy
Blightbeetle
50% of 4 decks +50% synergy
Hierophant Bio-Titan
50% of 2 decks +50% synergy
Termagant Swarm
50% of 2 decks +49% synergy
Tervigon
50% of 2 decks +49% synergy
Sporocyst
50% of 2 decks +49% synergy
Athreos, God of Passage
50% of 4 decks +47% synergy
Jaheira, Friend of the Forest
50% of 2 decks +45% synergy
Infested Roothold
33% of 3 decks +33% synergy
Heartmender
33% of 3 decks +33% synergy
Infestation Expert
33% of 3 decks +33% synergy
Tangle Angler
33% of 3 decks +33% synergy
Cystbearer
33% of 3 decks +33% synergy
Krosan Wayfarer
33% of 3 decks +33% synergy
Spinebiter
33% of 3 decks +33% synergy
Putrefax
33% of 3 decks +33% synergy
Zeriam, Golden Wind
33% of 3 decks +33% synergy
Caustic Wasps
33% of 3 decks +33% synergy
Xantid Swarm
33% of 3 decks +33% synergy
Blightwidow
33% of 3 decks +33% synergy
Phyrexian Hydra
33% of 3 decks +33% synergy
Nantuko Elder
33% of 3 decks +33% synergy
Cazur, Ruthless Stalker
33% of 3 decks +33% synergy
Melira, Sylvok Outcast
33% of 3 decks +33% synergy
Hapatra, Vizier of Poisons
33% of 3 decks +33% synergy
Ikra Shidiqi, the Usurper
33% of 3 decks +33% synergy
Ant Queen
33% of 3 decks +33% synergy
Nantuko Vigilante
33% of 3 decks +33% synergy
Iridescent Hornbeetle
33% of 3 decks +33% synergy
Spring-Leaf Avenger
33% of 3 decks +33% synergy
Greenwarden of Murasa
33% of 3 decks +33% synergy
Blex, Vexing Pest
33% of 3 decks +32% synergy
Viridian Corrupter
33% of 3 decks +32% synergy
Obelisk Spider
33% of 3 decks +32% synergy
Hornet Nest
33% of 3 decks +32% synergy
Phyrexian Swarmlord
33% of 3 decks +32% synergy
Hungering Hydra
33% of 3 decks +32% synergy
Lathiel, the Bounteous Dawn
33% of 3 decks +32% synergy
Instants
Rampaging Growth
50% of 2 decks +50% synergy
Vitality Charm
33% of 3 decks +33% synergy
Charge of the Mites
33% of 3 decks +33% synergy
Aura Mutation
33% of 3 decks +30% synergy
Second Harvest
33% of 3 decks +28% synergy
Choking Fumes
25% of 4 decks +25% synergy
Carrion
25% of 4 decks +25% synergy
Hellish Rebuke
25% of 4 decks +24% synergy
Grim Affliction
25% of 4 decks +24% synergy
Vanishing Verse
25% of 4 decks +23% synergy
Utter End
25% of 4 decks +18% synergy
Vampiric Tutor
25% of 4 decks +7% synergy
Teferi's Protection
25% of 4 decks +5% synergy
Anguished Unmaking
25% of 4 decks +1% synergy
Generous Gift
25% of 4 decks -1% synergy
Path to Exile
25% of 4 decks -21% synergy
Swords to Plowshares
25% of 4 decks -38% synergy
Sorceries
Rite of Replication
100% of 1 decks +97% synergy
Eerie Ultimatum
67% of 3 decks +54% synergy
Titania's Command
50% of 2 decks +48% synergy
Diabolic Tutor
50% of 4 decks +44% synergy
Vindicate
50% of 4 decks +43% synergy
Deep Reconnaissance
33% of 3 decks +33% synergy
Untamed Wilds
33% of 3 decks +33% synergy
Pest Summoning
33% of 3 decks +33% synergy
Far Wanderings
33% of 3 decks +32% synergy
Dig Up
33% of 3 decks +31% synergy
Explosive Vegetation
33% of 3 decks +30% synergy
Search for Tomorrow
33% of 3 decks +30% synergy
White Sun's Twilight
33% of 3 decks +30% synergy
Regrowth
33% of 3 decks +30% synergy
Migration Path
33% of 3 decks +30% synergy
Culling Ritual
33% of 3 decks +22% synergy
Nature's Lore
33% of 3 decks +1% synergy
Rampant Growth
33% of 3 decks -1% synergy
Cultivate
33% of 3 decks -13% synergy
Pyrrhic Revival
25% of 4 decks +25% synergy
Liliana's Influence
25% of 4 decks +25% synergy
Incremental Blight
25% of 4 decks +25% synergy
Black Sun's Zenith
25% of 4 decks +23% synergy
Profane Tutor
25% of 4 decks +22% synergy
In Garruk's Wake
25% of 4 decks +22% synergy
Debt to the Deathless
25% of 4 decks +22% synergy
Merciless Eviction
25% of 4 decks +20% synergy
Torment of Hailfire
25% of 4 decks +20% synergy
Exsanguinate
25% of 4 decks +19% synergy
Wrath of God
25% of 4 decks +18% synergy
Toxic Deluge
25% of 4 decks +8% synergy
Demonic Tutor
25% of 4 decks +3% synergy
Utility Artifacts
Infested Fleshcutter
33% of 3 decks +33% synergy
Mirror Gallery
25% of 4 decks +25% synergy
Cauldron of Souls
25% of 4 decks +24% synergy
Bloodthirsty Blade
25% of 4 decks +24% synergy
Grafted Exoskeleton
25% of 4 decks +24% synergy
Contagion Engine
25% of 4 decks +24% synergy
Mirror Box
25% of 4 decks +24% synergy
Contagion Clasp
25% of 4 decks +24% synergy
Well of Lost Dreams
25% of 4 decks +23% synergy
Altar of Dementia
25% of 4 decks +22% synergy
Maskwood Nexus
25% of 4 decks +22% synergy
Idol of Oblivion
25% of 4 decks +21% synergy
Ashnod's Altar
25% of 4 decks +17% synergy
Skullclamp
25% of 4 decks +13% synergy
Lightning Greaves
25% of 4 decks -0% synergy
Swiftfoot Boots
25% of 4 decks -3% synergy
Enchantments
Corrupted Conscience
100% of 1 decks +99% synergy
Black Market
75% of 4 decks +70% synergy
Flourishing Defenses
67% of 3 decks +67% synergy
Grave Betrayal
50% of 4 decks +49% synergy
Anointed Procession
50% of 4 decks +41% synergy
Phyrexian Arena
50% of 4 decks +35% synergy
Arboria
33% of 3 decks +33% synergy
Wheel of Sun and Moon
33% of 3 decks +33% synergy
Aid from the Cowl
33% of 3 decks +33% synergy
Skeletal Swarming
33% of 3 decks +33% synergy
Gaea's Touch
33% of 3 decks +33% synergy
Song of Freyalise
33% of 3 decks +32% synergy
Noble Heritage
33% of 3 decks +32% synergy
Death's Presence
33% of 3 decks +32% synergy
Overgrowth
33% of 3 decks +32% synergy
Khalni Heart Expedition
33% of 3 decks +31% synergy
Primal Vigor
33% of 3 decks +30% synergy
Skrelv's Hive
33% of 3 decks +30% synergy
Privileged Position
33% of 3 decks +30% synergy
Fertile Ground
33% of 3 decks +29% synergy
Parallel Lives
33% of 3 decks +26% synergy
Sterling Grove
33% of 3 decks +25% synergy
Doubling Season
33% of 3 decks +24% synergy
Wild Growth
33% of 3 decks +22% synergy
High Ground
25% of 4 decks +25% synergy
Darkest Hour
25% of 4 decks +25% synergy
Crumbling Ashes
25% of 4 decks +25% synergy
Blowfly Infestation
25% of 4 decks +24% synergy
Behind the Scenes
25% of 4 decks +24% synergy
Out of Time
25% of 4 decks +24% synergy
Pestilence
25% of 4 decks +24% synergy
Heartless Summoning
25% of 4 decks +24% synergy
Dark Prophecy
25% of 4 decks +24% synergy
Underworld Connections
25% of 4 decks +24% synergy
Debtors' Knell
25% of 4 decks +24% synergy
Greater Auramancy
25% of 4 decks +23% synergy
Endless Ranks of the Dead
25% of 4 decks +23% synergy
Divine Visitation
25% of 4 decks +23% synergy
Rabble Rousing
25% of 4 decks +23% synergy
Painful Quandary
25% of 4 decks +23% synergy
Bloodchief Ascension
25% of 4 decks +22% synergy
Dictate of Erebos
25% of 4 decks +21% synergy
Bitterblossom
25% of 4 decks +21% synergy
Grave Pact
25% of 4 decks +21% synergy
Sphere of Safety
25% of 4 decks +20% synergy
Sanguine Bond
25% of 4 decks +19% synergy
Darksteel Mutation
25% of 4 decks +19% synergy
Bastion of Remembrance
25% of 4 decks +19% synergy
Land Tax
25% of 4 decks +18% synergy
Felidar Retreat
25% of 4 decks +18% synergy
Planeswalkers
Liliana, Death Wielder
25% of 4 decks +25% synergy
Liliana, the Last Hope
25% of 4 decks +24% synergy
Sorin, Lord of Innistrad
25% of 4 decks +23% synergy
Kaya the Inexorable
25% of 4 decks +23% synergy
Liliana, Dreadhorde General
25% of 4 decks +21% synergy
Elspeth, Sun's Champion
25% of 4 decks +20% synergy
Utility Lands
Volatile Fault
100% of 1 decks +99% synergy
Hidden Courtyard
100% of 1 decks +99% synergy
Gavony Township
33% of 3 decks +24% synergy
Arcane Lighthouse
25% of 4 decks +24% synergy
Field of Ruin
25% of 4 decks +23% synergy
Castle Locthwain
25% of 4 decks +20% synergy
Phyrexian Tower
25% of 4 decks +16% synergy
Urborg, Tomb of Yawgmoth
25% of 4 decks +15% synergy
Cabal Coffers
25% of 4 decks +14% synergy
Vault of the Archangel
25% of 4 decks +14% synergy
Reliquary Tower
25% of 4 decks -5% synergy
Bojuka Bog
25% of 4 decks -5% synergy
Mana Artifacts
Arcane Signet
50% of 4 decks -22% synergy
Talisman of Hierarchy
25% of 4 decks +1% synergy
Orzhov Signet
25% of 4 decks -2% synergy
Sol Ring
25% of 4 decks -59% synergy
Lands
Arcane Sanctum
100% of 1 decks +72% synergy
Prairie Stream
100% of 1 decks +66% synergy
Command Tower
100% of 4 decks +26% synergy
Darkmoss Bridge
67% of 3 decks +63% synergy
Canopy Vista
67% of 3 decks +31% synergy
Radiant Grove
50% of 2 decks +44% synergy
Haunted Mire
50% of 2 decks +42% synergy
Vault of Champions
50% of 4 decks +24% synergy
Isolated Chapel
50% of 4 decks +22% synergy
Thornglint Bridge
33% of 3 decks +31% synergy
Arctic Treeline
33% of 3 decks +30% synergy
Sunlit Marsh
33% of 3 decks +29% synergy
Woodland Chasm
33% of 3 decks +28% synergy
Deathcap Glade
33% of 3 decks +19% synergy
Overgrown Farmland
33% of 3 decks +17% synergy
Sunpetal Grove
33% of 3 decks +10% synergy
Bountiful Promenade
33% of 3 decks +9% synergy
Sandsteppe Citadel
33% of 3 decks +8% synergy
Undergrowth Stadium
33% of 3 decks +7% synergy
Woodland Cemetery
33% of 3 decks +5% synergy
Indatha Triome
33% of 3 decks +2% synergy
Bad River
25% of 4 decks +25% synergy
Grasslands
25% of 4 decks +24% synergy
Voldaren Estate
25% of 4 decks +24% synergy
Obscura Storefront
25% of 4 decks +24% synergy
Flagstones of Trokair
25% of 4 decks +23% synergy
Krosan Verge
25% of 4 decks +22% synergy
Snowfield Sinkhole
25% of 4 decks +22% synergy
Unclaimed Territory
25% of 4 decks +20% synergy
Goldmire Bridge
25% of 4 decks +20% synergy
Fabled Passage
25% of 4 decks +16% synergy
Marsh Flats
25% of 4 decks +14% synergy
Shineshadow Snarl
25% of 4 decks +13% synergy
Shattered Sanctum
25% of 4 decks +12% synergy
Tainted Field
25% of 4 decks +12% synergy
Orzhov Basilica
25% of 4 decks +9% synergy
Temple of Silence
25% of 4 decks +7% synergy
Myriad Landscape
25% of 4 decks +5% synergy
Evolving Wilds
25% of 4 decks +4% synergy
Path of Ancestry
25% of 4 decks +4% synergy
Caves of Koilos
25% of 4 decks -3% synergy
Godless Shrine
25% of 4 decks -16% synergy