Cauldron of Souls + Dross Scorpion + Workhorse

Cauldron of Souls
Dross Scorpion
Workhorse

Requires
Cauldron of Souls must be on the battlefield. Dross Scorpion must be on the battlefield. Workhorse must be on the battlefield.
Steps
  1. Activate Cauldron of Souls by tapping it, Workhorse gain persist until end of turn.
  2. Activate Workhorse by removing a +1/+1 counter, adding .
  3. Repeat from step 2 until Workhorse dies.
  4. Dross Scorpion and Workhorse triggers.
  5. Resolve the Dross Scorpion trigger, untapping Cauldron of Souls.
  6. Resolve the Workhorse persist ability trigger, returning it to the battlefield with three +1/+1 counters on it.
  7. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB.

Omarthis, Ghostfire Initiate
0.69% of 2166 decks 15 decks
Magda, Brazen Outlaw
0.02% of 12720 decks 2 decks
Mikaeus, the Unhallowed
0.13% of 1510 decks 2 decks
Mazirek, Kraul Death Priest
0.05% of 2209 decks 1 decks
Judith, the Scourge Diva
0.11% of 904 decks 1 decks
Jhoira, Ageless Innovator
0.05% of 2130 decks 1 decks
Gev, Scaled Scorch
0.02% of 6142 decks 1 decks
Zabaz, the Glimmerwasp
0.04% of 2262 decks 1 decks
Oswald Fiddlebender
0.05% of 1889 decks 1 decks
Imotekh the Stormlord
0.01% of 6792 decks 1 decks
Trazyn the Infinite
0.05% of 1901 decks 1 decks
Marvin, Murderous Mimic
0.10% of 991 decks 1 decks
Alesha, Who Smiles at Death
0.02% of 6074 decks 1 decks
Reyhan, Last of the Abzan // Rograkh, Son of Rohgahh
0.16% of 610 decks 1 decks
Shirei, Shizo's Caretaker
0.02% of 5826 decks 1 decks
Karn, Silver Golem
0.10% of 1018 decks 1 decks
Blaster, Combat DJ
0.15% of 659 decks 1 decks
Sharuum the Hegemon
0.04% of 2316 decks 1 decks
New Cards
Oviya, Automech Artisan
100% of 1 decks +99% synergy
Marketback Walker
38% of 8 decks +37% synergy
Muraganda Raceway
12% of 8 decks +11% synergy
The Aetherspark
12% of 8 decks +11% synergy
High Synergy Cards
Triskelion
79% of 34 decks +79% synergy
Ashnod's Altar
82% of 34 decks +75% synergy
Pentavus
62% of 34 decks +62% synergy
Walking Ballista
59% of 34 decks +56% synergy
Arcbound Reclaimer
56% of 34 decks +56% synergy
Cryptic Trilobite
53% of 34 decks +53% synergy
Hangarback Walker
50% of 34 decks +49% synergy
Shrine of the Forsaken Gods
50% of 34 decks +49% synergy
Forsaken Monument
50% of 34 decks +48% synergy
Buried Ruin
53% of 34 decks +48% synergy
Top Cards
The Ozolith
50% of 34 decks +47% synergy
Arcbound Crusher
47% of 34 decks +47% synergy
Steel Overseer
47% of 34 decks +46% synergy
Ugin, the Ineffable
47% of 34 decks +45% synergy
Scrap Trawler
47% of 34 decks +45% synergy
Viscera Seer
45% of 11 decks +37% synergy
Dark Ritual
45% of 11 decks +23% synergy
Patchwork Automaton
44% of 34 decks +44% synergy
Arcbound Ravager
44% of 34 decks +44% synergy
Animation Module
44% of 34 decks +44% synergy
Game Changers
Demonic Tutor
64% of 11 decks +42% synergy
Bolas's Citadel
27% of 11 decks +19% synergy
Vampiric Tutor
27% of 11 decks +10% synergy
Mana Vault
15% of 34 decks +9% synergy
Ancient Tomb
15% of 34 decks +5% synergy
Grim Monolith
9% of 34 decks +7% synergy
The One Ring
9% of 34 decks +1% synergy
Creatures
Stonecoil Serpent
44% of 34 decks +43% synergy
Liberator, Urza's Battlethopter
44% of 34 decks +43% synergy
Scrapyard Recombiner
41% of 34 decks +41% synergy
Myr Retriever
41% of 34 decks +39% synergy
Hexavus
38% of 34 decks +38% synergy
Mindless Automaton
38% of 34 decks +38% synergy
Syr Ginger, the Meal Ender
36% of 22 decks +36% synergy
Pitiless Plunderer
36% of 11 decks +29% synergy
Zulaport Cutthroat
36% of 11 decks +27% synergy
Blood Artist
36% of 11 decks +25% synergy
Palladium Myr
35% of 34 decks +33% synergy
Goblin Welder
33% of 9 decks +31% synergy
Reckless Fireweaver
33% of 9 decks +29% synergy
Drillworks Mole
32% of 34 decks +32% synergy
Towashi Guide-Bot
32% of 34 decks +32% synergy
Thopter Squadron
29% of 34 decks +29% synergy
Crystalline Crawler
29% of 34 decks +29% synergy
Foundry Inspector
29% of 34 decks +25% synergy
Skittering Cicada
29% of 28 decks +28% synergy
Disciple of the Vault
27% of 11 decks +25% synergy
Mikaeus, the Unhallowed
27% of 11 decks +25% synergy
Yawgmoth, Thran Physician
27% of 11 decks +24% synergy
Ayara, First of Locthwain
27% of 11 decks +24% synergy
Carrion Feeder
27% of 11 decks +22% synergy
Syr Konrad, the Grim
27% of 11 decks +18% synergy
Solemn Simulacrum
26% of 34 decks +13% synergy
Triskelavus
24% of 34 decks +24% synergy
Endless One
24% of 34 decks +23% synergy
Junk Diver
24% of 34 decks +23% synergy
Wandering Archaic
24% of 34 decks +22% synergy
Arcbound Slith
21% of 34 decks +20% synergy
Arcbound Worker
21% of 34 decks +20% synergy
Scarecrone
21% of 34 decks +20% synergy
Iron Apprentice
21% of 34 decks +20% synergy
Workshop Assistant
21% of 34 decks +20% synergy
Scavenged Brawler
21% of 34 decks +20% synergy
Canoptek Spyder
21% of 34 decks +20% synergy
Cryptothrall
21% of 34 decks +20% synergy
Jhoira's Familiar
21% of 34 decks +19% synergy
Glaring Fleshraker
19% of 16 decks +17% synergy
Abstruse Archaic
18% of 28 decks +17% synergy
Monoskelion
18% of 34 decks +18% synergy
Threefold Thunderhulk
17% of 18 decks +16% synergy
Tetravus
15% of 34 decks +15% synergy
Cathodion
15% of 34 decks +15% synergy
Graaz, Unstoppable Juggernaut
15% of 34 decks +14% synergy
Wurmcoil Engine
15% of 34 decks +13% synergy
Chronomaton
12% of 34 decks +12% synergy
Arcbound Fiend
12% of 34 decks +12% synergy
Farmstead Gleaner
12% of 34 decks +12% synergy
Instants
Swords to Plowshares
75% of 4 decks +12% synergy
Village Rites
36% of 11 decks +27% synergy
Deadly Dispute
36% of 11 decks +25% synergy
Warping Wail
26% of 34 decks +26% synergy
Desecrate Reality
21% of 28 decks +21% synergy
Null Elemental Blast
19% of 16 decks +18% synergy
Titan's Presence
12% of 34 decks +11% synergy
Not of This World
12% of 34 decks +11% synergy
Sorceries
All Is Dust
38% of 34 decks +37% synergy
Gamble
33% of 9 decks +24% synergy
Diabolic Intent
27% of 11 decks +19% synergy
Toxic Deluge
27% of 11 decks +9% synergy
Introduction to Annihilation
15% of 34 decks +14% synergy
Rise of the Eldrazi
14% of 28 decks +13% synergy
Utility Artifacts
Krark-Clan Ironworks
41% of 34 decks +40% synergy
Mystic Forge
41% of 34 decks +38% synergy
Clock of Omens
35% of 34 decks +34% synergy
Mind Stone
35% of 34 decks +19% synergy
Throne of Geth
32% of 34 decks +32% synergy
Lightning Greaves
32% of 34 decks +7% synergy
Blasting Station
29% of 34 decks +29% synergy
Rings of Brighthearth
29% of 34 decks +28% synergy
Sculpting Steel
29% of 34 decks +27% synergy
Unwinding Clock
29% of 34 decks +27% synergy
Blade of the Bloodchief
26% of 34 decks +26% synergy
Altar of Dementia
26% of 34 decks +24% synergy
Phyrexian Altar
26% of 34 decks +23% synergy
Trading Post
24% of 34 decks +22% synergy
Expedition Map
24% of 34 decks +21% synergy
Wayfarer's Bauble
24% of 34 decks +14% synergy
Salvaging Station
21% of 34 decks +21% synergy
Power Conduit
21% of 34 decks +20% synergy
Dreamstone Hedron
21% of 34 decks +20% synergy
Sword of Truth and Justice
21% of 34 decks +20% synergy
Agatha's Soul Cauldron
18% of 22 decks +17% synergy
Golden Argosy
18% of 34 decks +17% synergy
Nim Deathmantle
18% of 34 decks +17% synergy
Mind's Eye
18% of 34 decks +17% synergy
Contagion Engine
18% of 34 decks +17% synergy
Contagion Clasp
18% of 34 decks +16% synergy
Hedron Archive
18% of 34 decks +15% synergy
Skullclamp
18% of 34 decks +6% synergy
Swiftfoot Boots
18% of 34 decks -10% synergy
Tarrian's Soulcleaver
17% of 18 decks +15% synergy
Myr Turbine
15% of 34 decks +14% synergy
Liquimetal Coating
15% of 34 decks +14% synergy
Grinding Station
15% of 34 decks +14% synergy
Manifold Key
15% of 34 decks +13% synergy
Ashnod's Transmogrant
12% of 34 decks +12% synergy
Scythe of the Wretched
12% of 34 decks +12% synergy
Mycosynth Lattice
12% of 34 decks +11% synergy
Voltaic Key
12% of 34 decks +11% synergy
Spine of Ish Sah
12% of 34 decks +11% synergy
Mirage Mirror
12% of 34 decks +10% synergy
Staff of Domination
12% of 34 decks +10% synergy
Conjurer's Closet
12% of 34 decks +10% synergy
Helm of the Host
12% of 34 decks +9% synergy
Commander's Sphere
12% of 34 decks -3% synergy
Summoning Station
9% of 34 decks +9% synergy
Ecologist's Terrarium
9% of 34 decks +9% synergy
Armory of Iroas
9% of 34 decks +9% synergy
Sword of the Paruns
9% of 34 decks +8% synergy
Sword of Hours
9% of 34 decks +8% synergy
Darksteel Forge
9% of 34 decks +8% synergy
Enchantments
Goblin Bombardment
33% of 9 decks +27% synergy
Echoes of Eternity
31% of 16 decks +30% synergy
Ugin's Mastery
29% of 28 decks +28% synergy
Retribution of the Ancients
27% of 11 decks +27% synergy
Phyrexian Arena
27% of 11 decks +12% synergy
Planeswalkers
Ugin, the Spirit Dragon
12% of 34 decks +10% synergy
Karn, the Great Creator
9% of 34 decks +8% synergy
Utility Lands
War Room
53% of 34 decks +47% synergy
Karn's Bastion
50% of 34 decks +45% synergy
Rogue's Passage
50% of 34 decks +30% synergy
Drannith Ruins
45% of 33 decks +45% synergy
Tomb of the Spirit Dragon
44% of 34 decks +43% synergy
Nesting Grounds
44% of 34 decks +42% synergy
Urza's Saga
44% of 34 decks +37% synergy
Darksteel Citadel
41% of 34 decks +37% synergy
Reliquary Tower
41% of 34 decks +11% synergy
Ruins of Oran-Rief
38% of 34 decks +38% synergy
Tyrite Sanctum
38% of 34 decks +36% synergy
Inventors' Fair
38% of 34 decks +35% synergy
Vault of Whispers
36% of 11 decks +32% synergy
Phyrexian Tower
36% of 11 decks +28% synergy
Urza's Power Plant
35% of 34 decks +33% synergy
Urza's Mine
35% of 34 decks +33% synergy
Urza's Tower
35% of 34 decks +33% synergy
Guildless Commons
32% of 34 decks +31% synergy
Bonders' Enclave
32% of 34 decks +30% synergy
Scavenger Grounds
29% of 34 decks +26% synergy
Temple of the False God
29% of 34 decks +20% synergy
Cabal Coffers
27% of 11 decks +17% synergy
Bojuka Bog
27% of 11 decks -3% synergy
Urza's Workshop
26% of 34 decks +26% synergy
Zhalfirin Void
26% of 34 decks +26% synergy
Blast Zone
26% of 34 decks +25% synergy
Crawling Barrens
24% of 34 decks +23% synergy
Forge of Heroes
24% of 34 decks +23% synergy
Urza's Factory
18% of 34 decks +17% synergy
High Market
18% of 34 decks +15% synergy
Geier Reach Sanitarium
18% of 34 decks +14% synergy
Zoetic Cavern
15% of 34 decks +14% synergy
Blasted Landscape
15% of 34 decks +14% synergy
Mage-Ring Network
15% of 34 decks +14% synergy
Arch of Orazca
15% of 34 decks +14% synergy
Arcane Lighthouse
15% of 34 decks +13% synergy
Ghost Quarter
15% of 34 decks +12% synergy
Thespian's Stage
15% of 34 decks +12% synergy
Command Beacon
15% of 34 decks +10% synergy
Urborg, Tomb of Yawgmoth
15% of 34 decks +5% synergy
Sea Gate Wreckage
12% of 34 decks +11% synergy
Radiant Fountain
12% of 34 decks +11% synergy
Witch's Clinic
12% of 34 decks +10% synergy
Homeward Path
12% of 34 decks +10% synergy
Mikokoro, Center of the Sea
12% of 34 decks +10% synergy
Treasure Vault
12% of 34 decks +9% synergy
Strip Mine
12% of 34 decks +9% synergy
Phyrexia's Core
9% of 34 decks +9% synergy
Deserted Temple
9% of 34 decks +8% synergy
Mirrorpool
9% of 34 decks +8% synergy
Mana Artifacts
Sol Ring
91% of 34 decks +7% synergy
Thran Dynamo
59% of 34 decks +54% synergy
Everflowing Chalice
38% of 34 decks +34% synergy
Basalt Monolith
35% of 34 decks +33% synergy
Liquimetal Torque
35% of 34 decks +32% synergy
Gilded Lotus
29% of 34 decks +26% synergy
Worn Powerstone
26% of 34 decks +24% synergy
Arcane Signet
26% of 34 decks -46% synergy
Thought Vessel
18% of 34 decks +0% synergy
Coveted Jewel
15% of 34 decks +14% synergy
Staff of Compleation
15% of 34 decks +14% synergy
Blinkmoth Urn
12% of 34 decks +11% synergy
The Mightstone and Weakstone
9% of 34 decks +8% synergy
Chromatic Orrery
9% of 34 decks +7% synergy
Mana Crypt
9% of 34 decks +3% synergy
Fellwar Stone
9% of 34 decks -12% synergy
Lands
The Mycosynth Gardens
26% of 34 decks +25% synergy
Urza's Cave
25% of 16 decks +22% synergy
Hall of Tagsin
21% of 34 decks +20% synergy
Demolition Field
18% of 34 decks +15% synergy
Myriad Landscape
18% of 34 decks -1% synergy
Command Tower
18% of 34 decks -57% synergy
Cave of Temptation
9% of 34 decks +9% synergy
Power Depot
9% of 34 decks +8% synergy