Elemental Mastery + Brimstone Trebuchet + Maskwood Nexus

Elemental Mastery
Brimstone Trebuchet
Maskwood Nexus

Requires
Elemental Mastery must be on the battlefield. Brimstone Trebuchet must be on the battlefield. Maskwood Nexus must be on the battlefield. Elemental Mastery attached to Brimstone Trebuchet. Brimstone Trebuchet does not have summoning sickness.
Steps
  1. Activate Brimstone Trebuchet by tapping it, creating a 1/1 Elemental creature token.
  2. The Elemental enters the battlefield as a Knight due to Maskwood Nexus, triggering Brimstone Trebuchet, untapping Brimstone Trebuchet.
  3. Repeat.
Results
Infinite creature tokens with haste. Infinite ETB.

Gev, Scaled Scorch
0.06% of 4662 decks 3 decks
Magda, Brazen Outlaw
0.01% of 11258 decks 1 decks
Rukarumel, Biologist
0.03% of 2924 decks 1 decks
High Synergy Cards
Descent into Avernus
80% of 5 decks +77% synergy
Impact Tremors
80% of 5 decks +70% synergy
Jeska's Will
80% of 5 decks +63% synergy
Chaos Warp
80% of 5 decks +48% synergy
Blasphemous Act
80% of 5 decks +46% synergy
Creatures
Benthicore
100% of 1 decks +100% synergy
Captain of the Mists
100% of 1 decks +100% synergy
Turntimber Ranger
100% of 1 decks +100% synergy
Gila Courser
100% of 3 decks +100% synergy
Dormant Sliver
100% of 1 decks +100% synergy
Pyrotechnic Performer
100% of 3 decks +100% synergy
Frilled Sparkshooter
100% of 3 decks +99% synergy
Reptilian Recruiter
100% of 3 decks +99% synergy
Thought-Stalker Warlock
100% of 3 decks +99% synergy
Higure, the Still Wind
100% of 1 decks +99% synergy
Shrieking Drake
100% of 1 decks +99% synergy
Steampath Charger
100% of 3 decks +99% synergy
Timestream Navigator
100% of 1 decks +99% synergy
Aphetto Alchemist
100% of 1 decks +99% synergy
Azami, Lady of Scrolls
100% of 1 decks +99% synergy
Hired Claw
100% of 3 decks +99% synergy
Reaper King
100% of 1 decks +99% synergy
Merrow Reejerey
100% of 1 decks +99% synergy
Bishop of Wings
100% of 1 decks +99% synergy
Seeker of Skybreak
100% of 1 decks +99% synergy
Malcolm, Keen-Eyed Navigator
100% of 1 decks +99% synergy
Magebane Lizard
100% of 3 decks +99% synergy
Agate-Blade Assassin
100% of 3 decks +99% synergy
Manaweft Sliver
100% of 1 decks +99% synergy
Gemhide Sliver
100% of 1 decks +99% synergy
Valley Flamecaller
100% of 3 decks +99% synergy
Hearthborn Battler
100% of 3 decks +98% synergy
Unruly Catapult
100% of 3 decks +98% synergy
Kindlespark Duo
100% of 3 decks +98% synergy
Fireglass Mentor
100% of 3 decks +98% synergy
Flamecache Gecko
100% of 3 decks +98% synergy
Iridescent Vinelasher
100% of 3 decks +97% synergy
Fauna Shaman
100% of 1 decks +97% synergy
Recruiter of the Guard
100% of 1 decks +97% synergy
Laughing Jasper Flint
100% of 3 decks +97% synergy
Valley Rotcaller
100% of 3 decks +96% synergy
Kykar, Wind's Fury
100% of 1 decks +95% synergy
The Locust God
100% of 1 decks +95% synergy
Agate Instigator
100% of 3 decks +92% synergy
Faeburrow Elder
100% of 1 decks +89% synergy
Birds of Paradise
100% of 1 decks +73% synergy
Blisterspit Gremlin
60% of 5 decks +60% synergy
Spitfire Lagac
60% of 5 decks +59% synergy
Kediss, Emberclaw Familiar
60% of 5 decks +57% synergy
Thermo-Alchemist
60% of 5 decks +57% synergy
Lizard Blades
60% of 5 decks +57% synergy
Purphoros, God of the Forge
60% of 5 decks +55% synergy
Thundering Raiju
40% of 5 decks +39% synergy
Coercive Recruiter
40% of 5 decks +39% synergy
Ganax, Astral Hunter
40% of 5 decks +38% synergy
Instants
Scales of Shale
100% of 3 decks +99% synergy
Delay
100% of 1 decks +97% synergy
Chord of Calling
100% of 1 decks +94% synergy
Pact of Negation
100% of 1 decks +93% synergy
Eladamri's Call
100% of 1 decks +89% synergy
Worldly Tutor
100% of 1 decks +86% synergy
Dovin's Veto
100% of 1 decks +81% synergy
Negate
100% of 1 decks +77% synergy
Path to Exile
100% of 1 decks +54% synergy
Swords to Plowshares
100% of 1 decks +37% synergy
Go for the Throat
75% of 4 decks +68% synergy
Infernal Grasp
75% of 4 decks +67% synergy
Bedevil
75% of 4 decks +61% synergy
Terminate
75% of 4 decks +54% synergy
Dismember
50% of 4 decks +47% synergy
Fell the Profane
33% of 3 decks +22% synergy
Vampiric Tutor
25% of 4 decks +7% synergy
Tibalt's Trickery
20% of 5 decks +14% synergy
Pyroblast
20% of 5 decks +14% synergy
Red Elemental Blast
20% of 5 decks +13% synergy
Unexpected Windfall
20% of 5 decks +13% synergy
Big Score
20% of 5 decks +11% synergy
Thrill of Possibility
20% of 5 decks +10% synergy
Lightning Bolt
20% of 5 decks +9% synergy
Abrade
20% of 5 decks +9% synergy
Deflecting Swat
20% of 5 decks +4% synergy
Sorceries
Weird Harvest
100% of 1 decks +100% synergy
Bring to Light
100% of 1 decks +98% synergy
Song of Totentanz
100% of 3 decks +97% synergy
Green Sun's Zenith
100% of 1 decks +94% synergy
Nature's Lore
100% of 1 decks +68% synergy
Farseek
100% of 1 decks +66% synergy
Rampant Growth
100% of 1 decks +65% synergy
Cultivate
100% of 1 decks +54% synergy
Kindred Dominance
75% of 4 decks +71% synergy
Night's Whisper
75% of 4 decks +66% synergy
Sign in Blood
75% of 4 decks +65% synergy
Feed the Swarm
75% of 4 decks +57% synergy
Tempt with Vengeance
60% of 5 decks +59% synergy
Light Up the Stage
60% of 5 decks +57% synergy
Grim Tutor
25% of 4 decks +20% synergy
Demonic Tutor
25% of 4 decks +3% synergy
Kindred Charge
20% of 5 decks +19% synergy
Trash for Treasure
20% of 5 decks +19% synergy
Reckless Endeavor
20% of 5 decks +19% synergy
Brass's Bounty
20% of 5 decks +17% synergy
Tormenting Voice
20% of 5 decks +17% synergy
Chain Reaction
20% of 5 decks +15% synergy
Vandalblast
20% of 5 decks +4% synergy
Faithless Looting
20% of 5 decks +3% synergy
Utility Artifacts
Cryptolith Fragment
60% of 5 decks +60% synergy
Bontu's Monument
60% of 5 decks +58% synergy
Realmbreaker, the Invasion Tree
25% of 4 decks +24% synergy
Beamtown Beatstick
25% of 4 decks +23% synergy
The Reaver Cleaver
25% of 4 decks +21% synergy
Mirror Shield
20% of 5 decks +20% synergy
Welding Jar
20% of 5 decks +19% synergy
Mask of Avacyn
20% of 5 decks +19% synergy
Goldvein Pick
20% of 5 decks +19% synergy
Champion's Helm
20% of 5 decks +19% synergy
Grafted Exoskeleton
20% of 5 decks +19% synergy
Commander's Plate
20% of 5 decks +18% synergy
Herald's Horn
20% of 5 decks +14% synergy
Lightning Greaves
20% of 5 decks -5% synergy
Swiftfoot Boots
20% of 5 decks -8% synergy
Enchantments
Presence of Gond
100% of 1 decks +100% synergy
Arcane Adaptation
100% of 1 decks +99% synergy
Defense of the Heart
100% of 1 decks +97% synergy
Phyrexian Arena
75% of 4 decks +60% synergy
Pyrohemia
60% of 5 decks +59% synergy
Shared Animosity
60% of 5 decks +56% synergy
Sanctum of Stone Fangs
50% of 4 decks +49% synergy
Giant Spectacle
20% of 5 decks +20% synergy
Frenzied Rage
20% of 5 decks +20% synergy
Madcap Skills
20% of 5 decks +20% synergy
Mana Echoes
20% of 5 decks +19% synergy
Molten Echoes
20% of 5 decks +18% synergy
Sticky Fingers
20% of 5 decks +18% synergy
Planeswalkers
Angrath, the Flame-Chained
75% of 4 decks +74% synergy
Daretti, Scrap Savant
20% of 5 decks +18% synergy
Utility Lands
Rockface Village
100% of 3 decks +98% synergy
Mudflat Village
100% of 3 decks +97% synergy
Leechridden Swamp
75% of 4 decks +74% synergy
Bojuka Bog
75% of 4 decks +45% synergy
Shivan Gorge
60% of 5 decks +58% synergy
Treasure Vault
20% of 5 decks +17% synergy
Mana Artifacts
Patchwork Banner
100% of 3 decks +90% synergy
Sol Ring
100% of 5 decks +16% synergy
Fellwar Stone
80% of 5 decks +59% synergy
Arcane Signet
80% of 5 decks +8% synergy
Talisman of Indulgence
75% of 4 decks +49% synergy
Rakdos Signet
75% of 4 decks +45% synergy
Thought Vessel
60% of 5 decks +43% synergy
Mind Stone
60% of 5 decks +43% synergy
Paradise Mantle
20% of 5 decks +19% synergy
Chromatic Lantern
20% of 5 decks +10% synergy
Lands
Mount Doom
100% of 3 decks +92% synergy
Raucous Theater
100% of 3 decks +87% synergy
Deserted Beach
100% of 1 decks +84% synergy
Dreamroot Cascade
100% of 1 decks +81% synergy
Spectator Seating
100% of 1 decks +75% synergy
Sandsteppe Citadel
100% of 1 decks +74% synergy
Vault of Champions
100% of 1 decks +74% synergy
Raugrin Triome
100% of 1 decks +73% synergy
Opulent Palace
100% of 1 decks +73% synergy
Frontier Bivouac
100% of 1 decks +73% synergy
Hinterland Harbor
100% of 1 decks +73% synergy
Sulfur Falls
100% of 1 decks +69% synergy
Spara's Headquarters
100% of 1 decks +68% synergy
Jungle Shrine
100% of 1 decks +68% synergy
Ketria Triome
100% of 1 decks +67% synergy
Jetmir's Garden
100% of 1 decks +67% synergy
The World Tree
100% of 1 decks +67% synergy
Command Tower
80% of 5 decks +6% synergy
Sulfurous Mire
75% of 4 decks +73% synergy
Blightstep Pathway
75% of 4 decks +65% synergy
Tainted Peak
75% of 4 decks +65% synergy
Shadowblood Ridge
75% of 4 decks +63% synergy
Foreboding Ruins
75% of 4 decks +59% synergy
Haunted Ridge
75% of 4 decks +59% synergy
Luxury Suite
75% of 4 decks +49% synergy
Dragonskull Summit
75% of 4 decks +44% synergy
Smoldering Marsh
75% of 4 decks +42% synergy
Blood Crypt
75% of 4 decks +36% synergy
Fabled Passage
60% of 5 decks +51% synergy
Bloodstained Mire
60% of 5 decks +50% synergy
Ally Encampment
20% of 5 decks +20% synergy
Ancient Ziggurat
20% of 5 decks +20% synergy
Haven of the Spirit Dragon
20% of 5 decks +19% synergy
Reflecting Pool
20% of 5 decks +15% synergy
Cavern of Souls
20% of 5 decks +13% synergy
Terramorphic Expanse
20% of 5 decks +4% synergy
Evolving Wilds
20% of 5 decks -1% synergy
Path of Ancestry
20% of 5 decks -1% synergy
Exotic Orchard
20% of 5 decks -16% synergy