Slimefoot and Squee + Breath of Fury + Fervor

Slimefoot and Squee
Breath of Fury
Fervor

Requires
Slimefoot and Squee must be on the battlefield. Breath of Fury must be on the battlefield. Fervor 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.

Xira, the Golden Sting
0.09% of 2275 decks 2 decks
Falthis, Shadowcat Familiar // Tana, the Bloodsower
0.57% of 174 decks 1 decks
Slimefoot and Squee
0.01% of 7791 decks 1 decks
Vaevictis Asmadi, the Dire
0.05% of 2063 decks 1 decks
New Cards
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100% of 1 decks +97% synergy
Enduring Vitality
100% of 1 decks +91% synergy
High Synergy Cards
Urabrask the Hidden
80% of 5 decks +76% synergy
Anger
80% of 5 decks +62% synergy
Creatures
The Infamous Cruelclaw
100% of 1 decks +99% synergy
Ghalta, Stampede Tyrant
100% of 1 decks +96% synergy
Vaultborn Tyrant
100% of 1 decks +95% synergy
Fanatic of Rhonas
100% of 1 decks +92% synergy
Etali, Primal Conqueror
100% of 1 decks +86% synergy
Combat Celebrant
60% of 5 decks +59% synergy
Krenko, Mob Boss
60% of 5 decks +58% synergy
Hornet Queen
60% of 5 decks +58% synergy
Skirk Prospector
60% of 5 decks +56% synergy
Hapatra, Vizier of Poisons
40% of 5 decks +40% synergy
Delina, Wild Mage
40% of 5 decks +39% synergy
Sifter of Skulls
40% of 5 decks +39% synergy
Bloodsoaked Champion
40% of 5 decks +39% synergy
Cult Conscript
40% of 5 decks +39% synergy
Legion Warboss
40% of 5 decks +39% synergy
Goblin Chieftain
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Goblin Warchief
40% of 5 decks +39% synergy
Putrid Goblin
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Kiki-Jiki, Mirror Breaker
40% of 5 decks +38% synergy
Pawn of Ulamog
40% of 5 decks +37% synergy
Loyal Apprentice
40% of 5 decks +37% synergy
Karlach, Fury of Avernus
40% of 5 decks +36% synergy
Toski, Bearer of Secrets
40% of 5 decks +36% synergy
Mikaeus, the Unhallowed
40% of 5 decks +35% synergy
Carrion Feeder
40% of 5 decks +35% synergy
Sprouting Thrinax
40% of 5 decks +34% synergy
Reassembling Skeleton
40% of 5 decks +34% synergy
Drivnod, Carnage Dominus
40% of 5 decks +34% synergy
Giant Adephage
40% of 5 decks +34% synergy
Mazirek, Kraul Death Priest
40% of 5 decks +32% synergy
Chatterfang, Squirrel General
40% of 5 decks +29% synergy
Viscera Seer
40% of 5 decks +24% synergy
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40% of 5 decks +24% synergy
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Oathsworn Vampire
20% of 5 decks +20% synergy
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20% of 5 decks +20% synergy
Soul-Scar Mage
20% of 5 decks +20% synergy
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20% of 5 decks +20% synergy
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20% of 5 decks +20% synergy
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20% of 5 decks +20% synergy
The Red Terror
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20% of 5 decks +20% synergy
Gorm the Great
20% of 5 decks +20% synergy
Goblin Piledriver
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Virtus the Veiled
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Piper of the Swarm
20% of 5 decks +20% synergy
Fynn, the Fangbearer
20% of 5 decks +20% synergy
Instants
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Manamorphose
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Arachnogenesis
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Fog
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20% of 5 decks +17% synergy
Golgari Charm
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Lightning Bolt
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20% of 5 decks +4% synergy
Terminate
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40% of 5 decks +5% synergy
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20% of 5 decks +20% synergy
Indomitable Creativity
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Insult // Injury
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Reality Scramble
20% of 5 decks +20% synergy
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Sylvan Scrying
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Diabolic Tutor
20% of 5 decks +16% synergy
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Dread Return
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Nim Deathmantle
40% of 5 decks +39% synergy
Urabrask's Forge
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Fellwar Stone
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Bloodfell Caves
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Jungle Hollow
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Blighted Woodland
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Blightstep Pathway
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Game Trail
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Gruul Turf
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Myriad Landscape
20% of 5 decks +2% synergy
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Evolving Wilds
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Bloodstained Mire
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Wooded Foothills
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Undergrowth Stadium
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Verdant Catacombs
20% of 5 decks -17% synergy
Blood Crypt
20% of 5 decks -27% synergy
Overgrown Tomb
20% of 5 decks -30% synergy
Stomping Ground
20% of 5 decks -30% synergy
Ziatora's Proving Ground
20% of 5 decks -34% synergy