Slimefoot and Squee + Breath of Fury + Concordant Crossroads

Slimefoot and Squee
Breath of Fury
Concordant Crossroads

Requires
Slimefoot and Squee must be on the battlefield. Breath of Fury must be on the battlefield. Concordant Crossroads must be on the battlefield. Breath of Fury attached to another creature you control that does not have summoning sickness. Slimefoot and Squee does not have summoning sickness. An opponent cannot block and kill creatures you control.
Steps
  1. Declare the creature with Breath of Fury attached and Slimefoot and Squee as attackers.
  2. Slimefoot and Squee triggers, creating a 1/1 Saproling creature token.
  3. Deal combat damage to an opponent using the creature with Breath of Fury attached.
  4. Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the Saproling token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
  5. Repeat each combat phase.
Results
Infinite combat damage. Infinite combat phases. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite mana creatures you control can produce. Infinite sacrifice triggers. Infinite untap of creatures you control.

Slimefoot and Squee
0.03% of 7791 decks 2 decks
Xira, the Golden Sting
0.04% of 2275 decks 1 decks
Creatures
Pawn of Ulamog
100% of 3 decks +97% synergy
Sheoldred
100% of 1 decks +97% synergy
Carrion Feeder
100% of 3 decks +95% synergy
Sprouting Thrinax
100% of 3 decks +94% synergy
Drivnod, Carnage Dominus
100% of 3 decks +94% synergy
Etali, Primal Conqueror
100% of 1 decks +86% synergy
Viscera Seer
100% of 3 decks +84% synergy
Pitiless Plunderer
100% of 3 decks +84% synergy
Anger
100% of 3 decks +82% synergy
Mirkwood Bats
100% of 1 decks +81% synergy
Burning-Tree Emissary
67% of 3 decks +66% synergy
Hapatra, Vizier of Poisons
67% of 3 decks +66% synergy
Sifter of Skulls
67% of 3 decks +66% synergy
Bloodsoaked Champion
67% of 3 decks +66% synergy
Cult Conscript
67% of 3 decks +66% synergy
Krenko, Mob Boss
67% of 3 decks +65% synergy
Urabrask the Hidden
67% of 3 decks +63% synergy
Skirk Prospector
67% of 3 decks +63% synergy
Reassembling Skeleton
67% of 3 decks +61% synergy
Bloom Tender
67% of 3 decks +59% synergy
Blood Artist
67% of 3 decks +55% synergy
Zulaport Cutthroat
67% of 3 decks +54% synergy
Chainer, Nightmare Adept
67% of 3 decks +53% synergy
Dockside Extortionist
67% of 3 decks +51% synergy
Birds of Paradise
67% of 3 decks +32% synergy
Oathsworn Vampire
33% of 3 decks +33% synergy
Soul-Scar Mage
33% of 3 decks +33% synergy
Priest of Urabrask
33% of 3 decks +33% synergy
Butcher Ghoul
33% of 3 decks +33% synergy
Priest of Gix
33% of 3 decks +33% synergy
Quillspike
33% of 3 decks +33% synergy
The Red Terror
33% of 3 decks +33% synergy
Chancellor of the Forge
33% of 3 decks +33% synergy
Myr Battlesphere
33% of 3 decks +33% synergy
Ayara, First of Locthwain
33% of 3 decks +33% synergy
Thermopod
33% of 3 decks +33% synergy
Phyrexian Triniform
33% of 3 decks +33% synergy
Tenacious Dead
33% of 3 decks +33% synergy
Triplicate Titan
33% of 3 decks +33% synergy
Saber Ants
33% of 3 decks +33% synergy
Beetleback Chief
33% of 3 decks +33% synergy
Living Hive
33% of 3 decks +33% synergy
Broodhatch Nantuko
33% of 3 decks +33% synergy
Devoted Druid
33% of 3 decks +33% synergy
Port Razer
33% of 3 decks +33% synergy
Combat Celebrant
33% of 3 decks +33% synergy
Gravecrawler
33% of 3 decks +33% synergy
Legion Warboss
33% of 3 decks +32% synergy
Goblin Chieftain
33% of 3 decks +32% synergy
Body Launderer
33% of 3 decks +32% synergy
Instants
Corrupted Conviction
100% of 1 decks +93% synergy
Manamorphose
33% of 3 decks +33% synergy
Lightning Bolt
33% of 3 decks +28% synergy
Artifact Mutation
33% of 3 decks +25% synergy
Nature's Claim
33% of 3 decks +24% synergy
Village Rites
33% of 3 decks +21% synergy
Entomb
33% of 3 decks +20% synergy
Deadly Dispute
33% of 3 decks +16% synergy
Chaos Warp
33% of 3 decks +3% synergy
Assassin's Trophy
33% of 3 decks -8% synergy
Beast Within
33% of 3 decks -8% synergy
Sorceries
Feed the Swarm
33% of 3 decks +30% synergy
Cathartic Reunion
33% of 3 decks +28% synergy
Damnation
33% of 3 decks +25% synergy
Faithless Looting
33% of 3 decks +14% synergy
Reanimate
33% of 3 decks +14% synergy
Demonic Tutor
33% of 3 decks +14% synergy
Victimize
33% of 3 decks +9% synergy
Three Visits
33% of 3 decks +7% synergy
Nature's Lore
33% of 3 decks -1% synergy
Blasphemous Act
33% of 3 decks -8% synergy
Cultivate
33% of 3 decks -11% synergy
Utility Artifacts
Ashnod's Altar
100% of 3 decks +84% synergy
Nim Deathmantle
67% of 3 decks +66% synergy
Altar of Dementia
67% of 3 decks +60% synergy
Phyrexian Altar
67% of 3 decks +56% synergy
Panharmonicon
33% of 3 decks +33% synergy
Helm of the Host
33% of 3 decks +32% synergy
Umbral Mantle
33% of 3 decks +30% synergy
Urabrask's Forge
33% of 3 decks +29% synergy
Skullclamp
33% of 3 decks +15% synergy
Enchantments
Goblin Bombardment
100% of 3 decks +86% synergy
Fervor
67% of 3 decks +66% synergy
Carnival of Souls
33% of 3 decks +33% synergy
Trudge Garden
33% of 3 decks +33% synergy
Blight Mound
33% of 3 decks +33% synergy
Blowfly Infestation
33% of 3 decks +33% synergy
Dark Prophecy
33% of 3 decks +33% synergy
Nest of Scarabs
33% of 3 decks +33% synergy
Everlasting Torment
33% of 3 decks +33% synergy
Mass Hysteria
33% of 3 decks +33% synergy
All Will Be One
33% of 3 decks +31% synergy
Necrogenesis
33% of 3 decks +31% synergy
The Meathook Massacre
33% of 3 decks +30% synergy
Golgari Germination
33% of 3 decks +29% synergy
Warstorm Surge
33% of 3 decks +26% synergy
Impact Tremors
33% of 3 decks +25% synergy
Moldervine Reclamation
33% of 3 decks +23% synergy
Greater Good
33% of 3 decks +18% synergy
Utility Lands
High Market
33% of 3 decks +28% synergy
Phyrexian Tower
33% of 3 decks +22% synergy
Urborg, Tomb of Yawgmoth
33% of 3 decks +13% synergy
Yavimaya, Cradle of Growth
33% of 3 decks +11% synergy
Bojuka Bog
33% of 3 decks +4% synergy
Mana Artifacts
Sol Ring
67% of 3 decks -15% synergy
Arcane Signet
33% of 3 decks -36% synergy
Lands
Reflecting Pool
33% of 3 decks +28% synergy
Prismatic Vista
33% of 3 decks +25% synergy
Rakdos Carnarium
33% of 3 decks +21% synergy
Gruul Turf
33% of 3 decks +19% synergy
Haunted Ridge
33% of 3 decks +18% synergy
Golgari Rot Farm
33% of 3 decks +18% synergy
Karplusan Forest
33% of 3 decks +16% synergy
Rockfall Vale
33% of 3 decks +7% synergy
Luxury Suite
33% of 3 decks +2% synergy
Spire Garden
33% of 3 decks +1% synergy
Bloodstained Mire
33% of 3 decks -1% synergy
Undergrowth Stadium
33% of 3 decks -1% synergy
Verdant Catacombs
33% of 3 decks -3% synergy
Blood Crypt
33% of 3 decks -14% synergy
Overgrown Tomb
33% of 3 decks -17% synergy
Exotic Orchard
33% of 3 decks -17% synergy
Stomping Ground
33% of 3 decks -17% synergy
Ziatora's Proving Ground
33% of 3 decks -20% synergy
Command Tower
33% of 3 decks -57% synergy