Mairsil, the Pretender + Endling + Cauldron of Souls + Blood Pet + Anger

Mairsil, the Pretender
Endling
Cauldron of Souls
Blood Pet
Anger

Requires
Mairsil, the Pretender must be on the battlefield. Endling must be in exile. Cauldron of Souls must be in exile. Blood Pet must be in exile. Anger must be in the graveyard. You control a Mountain.
Steps
  1. Activate Mairsil using Cauldron of Souls' ability by tapping it, giving itself persist until end of turn.
  2. Activate Mairsil using Blood Pet's ability by sacrificing it, adding .
  3. When Mairsil dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  4. Activate Mairsil using Endling's third ability by paying , giving Mairsil undying until end of turn.
  5. Activate Mairsil using Blood Pet's ability by sacrificing it, adding .
  6. When Mairsil dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  7. Repeat.
Results
Infinite black mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Mairsil, the Pretender
0.63% of 1576 decks 10 decks
High Synergy Cards
Aetherling
90% of 10 decks +89% synergy
Oriq Loremage
90% of 10 decks +89% synergy
Buried Alive
90% of 10 decks +86% synergy
Torchling
80% of 10 decks +79% synergy
Pack Rat
80% of 10 decks +78% synergy
Quicksilver Elemental
70% of 10 decks +70% synergy
Asmodeus the Archfiend
70% of 10 decks +69% synergy
Thousand-Year Elixir
70% of 10 decks +69% synergy
Nevinyrral's Disk
70% of 10 decks +69% synergy
Arcanis the Omnipotent
70% of 10 decks +68% synergy
Top Cards
Gilded Lotus
90% of 10 decks +86% synergy
Frantic Search
70% of 10 decks +56% synergy
Faithless Looting
70% of 10 decks +50% synergy
Cinderhaze Wretch
60% of 10 decks +60% synergy
Mirror-Mad Phantasm
60% of 10 decks +60% synergy
Horseshoe Crab
60% of 10 decks +60% synergy
Pili-Pala
60% of 10 decks +60% synergy
Walking Ballista
60% of 10 decks +59% synergy
Staff of Domination
60% of 10 decks +59% synergy
Coveted Jewel
60% of 10 decks +59% synergy
Creatures
Ulamog's Dreadsire
100% of 1 decks +100% synergy
Blood Vassal
50% of 10 decks +50% synergy
Magus of the Bazaar
50% of 10 decks +50% synergy
Anthroplasm
50% of 10 decks +50% synergy
Crystalline Crawler
50% of 10 decks +50% synergy
Spikeshot Elder
50% of 10 decks +50% synergy
Hateflayer
50% of 10 decks +50% synergy
Deathbringer Thoctar
50% of 10 decks +50% synergy
Cavern Harpy
50% of 10 decks +50% synergy
Sage of Hours
40% of 10 decks +40% synergy
Morphling
40% of 10 decks +40% synergy
Triskelion
40% of 10 decks +40% synergy
Tree of Perdition
40% of 10 decks +39% synergy
Jace's Archivist
40% of 10 decks +33% synergy
Dralnu, Lich Lord
30% of 10 decks +30% synergy
Argent Sphinx
30% of 10 decks +30% synergy
Cephalid Inkshrouder
30% of 10 decks +30% synergy
Eater of the Dead
30% of 10 decks +30% synergy
Shauku, Endbringer
30% of 10 decks +30% synergy
Spark Double
30% of 10 decks +21% synergy
Arco-Flagellant
25% of 8 decks +25% synergy
Knacksaw Clique
20% of 10 decks +20% synergy
Blighted Bat
20% of 10 decks +20% synergy
Soliton
20% of 10 decks +20% synergy
Necrotic Ooze
20% of 10 decks +20% synergy
Minion of Leshrac
20% of 10 decks +20% synergy
Mercurial Chemister
20% of 10 decks +19% synergy
Galecaster Colossus
20% of 10 decks +19% synergy
Goro-Goro, Disciple of Ryusei
20% of 10 decks +18% synergy
Goblin Engineer
20% of 10 decks +17% synergy
Displacer Kitten
20% of 10 decks +16% synergy
Thassa's Oracle
20% of 10 decks +12% synergy
Omen Hawker
17% of 6 decks +16% synergy
Likeness Looter
17% of 6 decks +15% synergy
Unctus, Grand Metatect
14% of 7 decks +14% synergy
Argivian Avenger
12% of 8 decks +12% synergy
Hulking Metamorph
12% of 8 decks +12% synergy
Lunar Avenger
10% of 10 decks +10% synergy
Ghost-Lit Warder
10% of 10 decks +10% synergy
Patchwork Gnomes
10% of 10 decks +10% synergy
Darting Merfolk
10% of 10 decks +10% synergy
Glimmerbell
10% of 10 decks +10% synergy
Triskelavus
10% of 10 decks +10% synergy
Skill Borrower
10% of 10 decks +10% synergy
Cryptic Trilobite
10% of 10 decks +10% synergy
Overeager Apprentice
10% of 10 decks +10% synergy
Demonic Hordes
10% of 10 decks +10% synergy
Skywing Aven
10% of 10 decks +10% synergy
Crimson Mage
10% of 10 decks +10% synergy
Workhorse
10% of 10 decks +10% synergy
Instants
Entomb
60% of 10 decks +54% synergy
Counterspell
60% of 10 decks +15% synergy
Fell the Profane
50% of 2 decks +39% synergy
Sink into Stupor
50% of 2 decks +39% synergy
Terminate
50% of 10 decks +22% synergy
Demand Answers
40% of 5 decks +37% synergy
Fact or Fiction
40% of 10 decks +28% synergy
Fierce Guardianship
40% of 10 decks +21% synergy
Intuition
30% of 10 decks +28% synergy
Ghostly Flicker
30% of 10 decks +23% synergy
Thrill of Possibility
30% of 10 decks +22% synergy
Mana Drain
30% of 10 decks +14% synergy
Swan Song
30% of 10 decks +13% synergy
Vampiric Tutor
30% of 10 decks +11% synergy
Cyclonic Rift
30% of 10 decks +2% synergy
Blur
20% of 10 decks +19% synergy
Planar Incision
20% of 10 decks +18% synergy
Izzet Charm
20% of 10 decks +17% synergy
Essence Flux
20% of 10 decks +17% synergy
Rakdos Charm
20% of 10 decks +5% synergy
Deflecting Swat
20% of 10 decks +4% synergy
Dark Ritual
20% of 10 decks -9% synergy
Chaos Warp
20% of 10 decks -21% synergy
Hostile Negotiations
12% of 8 decks +11% synergy
Saw in Half
12% of 8 decks +10% synergy
Shadow of Doubt
10% of 10 decks +10% synergy
Forbid
10% of 10 decks +10% synergy
Tolarian Winds
10% of 10 decks +10% synergy
First Day of Class
10% of 10 decks +10% synergy
Dimir Charm
10% of 10 decks +10% synergy
Capsize
10% of 10 decks +10% synergy
Remand
10% of 10 decks +10% synergy
Thirst for Discovery
10% of 10 decks +9% synergy
Slaughter Pact
10% of 10 decks +9% synergy
Saw It Coming
10% of 10 decks +9% synergy
Stubborn Denial
10% of 10 decks +9% synergy
Whir of Invention
10% of 10 decks +9% synergy
Forbidden Alchemy
10% of 10 decks +8% synergy
Thought Scour
10% of 10 decks +8% synergy
Thirst for Knowledge
10% of 10 decks +7% synergy
Drown in the Loch
10% of 10 decks +6% synergy
Maestros Charm
10% of 10 decks +5% synergy
Go for the Throat
10% of 10 decks +4% synergy
Malakir Rebirth
10% of 10 decks +4% synergy
Lightning Bolt
10% of 10 decks +4% synergy
Flusterstorm
10% of 10 decks +3% synergy
Pact of Negation
10% of 10 decks +2% synergy
Force of Will
10% of 10 decks -1% synergy
Mystical Tutor
10% of 10 decks -5% synergy
Brainstorm
10% of 10 decks -10% synergy
Sorceries
Demonic Tutor
60% of 10 decks +36% synergy
Unmarked Grave
50% of 10 decks +48% synergy
Windfall
50% of 10 decks +26% synergy
Cathartic Reunion
40% of 10 decks +38% synergy
Wheel of Fortune
40% of 10 decks +31% synergy
Gamble
40% of 10 decks +30% synergy
Lively Dirge
33% of 3 decks +31% synergy
Grim Tutor
30% of 10 decks +25% synergy
Ransack the Lab
20% of 10 decks +20% synergy
Final Parting
20% of 10 decks +19% synergy
Careful Study
20% of 10 decks +19% synergy
Molten Collapse
20% of 5 decks +18% synergy
Fabricate
20% of 10 decks +16% synergy
Vandalblast
20% of 10 decks +2% synergy
Toxic Deluge
20% of 10 decks -0% synergy
Blasphemous Act
20% of 10 decks -29% synergy
Reckless Handling
17% of 6 decks +16% synergy
Morality Shift
10% of 10 decks +10% synergy
Fervent Mastery
10% of 10 decks +10% synergy
Flux
10% of 10 decks +10% synergy
Bone Shards
10% of 10 decks +9% synergy
Compulsive Research
10% of 10 decks +9% synergy
Strategic Planning
10% of 10 decks +9% synergy
Glimpse the Unthinkable
10% of 10 decks +9% synergy
Beacon of Unrest
10% of 10 decks +9% synergy
Last One Standing
10% of 10 decks +9% synergy
Necromantic Selection
10% of 10 decks +9% synergy
Deadly Tempest
10% of 10 decks +9% synergy
Burning Inquiry
10% of 10 decks +7% synergy
Chain Reaction
10% of 10 decks +7% synergy
Torment of Hailfire
10% of 10 decks +5% synergy
Reforge the Soul
10% of 10 decks +5% synergy
Night's Whisper
10% of 10 decks +5% synergy
Diabolic Tutor
10% of 10 decks +4% synergy
Wheel of Misfortune
10% of 10 decks +4% synergy
Imperial Seal
10% of 10 decks +3% synergy
Whispering Madness
10% of 10 decks +3% synergy
Damnation
10% of 10 decks -0% synergy
Ponder
10% of 10 decks -1% synergy
Jeska's Will
10% of 10 decks -8% synergy
Reanimate
10% of 10 decks -10% synergy
Feed the Swarm
10% of 10 decks -26% synergy
Utility Artifacts
The One Ring
57% of 7 decks +42% synergy
Pendant of Prosperity
50% of 10 decks +49% synergy
Mirage Mirror
50% of 10 decks +49% synergy
The Enigma Jewel
33% of 6 decks +33% synergy
Swiftfoot Boots
30% of 10 decks +4% synergy
Heartstone
20% of 10 decks +20% synergy
Tarrian's Soulcleaver
20% of 5 decks +19% synergy
Conjurer's Closet
20% of 10 decks +17% synergy
Phyrexian Altar
20% of 10 decks +16% synergy
Lightning Greaves
20% of 10 decks -10% synergy
Synthesis Pod
14% of 7 decks +14% synergy
Encroaching Mycosynth
14% of 7 decks +13% synergy
Book of Rass
10% of 10 decks +10% synergy
Magistrate's Scepter
10% of 10 decks +10% synergy
Ring of Three Wishes
10% of 10 decks +10% synergy
Netherborn Altar
10% of 10 decks +10% synergy
Illusionist's Bracers
10% of 10 decks +9% synergy
Chaos Wand
10% of 10 decks +9% synergy
Soul-Guide Lantern
10% of 10 decks +9% synergy
Elixir of Immortality
10% of 10 decks +9% synergy
Rings of Brighthearth
10% of 10 decks +9% synergy
Mirror Box
10% of 10 decks +8% synergy
Ashnod's Altar
10% of 10 decks +2% synergy
Enchantments
Training Grounds
30% of 10 decks +29% synergy
Rhystic Study
20% of 10 decks -7% synergy
Rising of the Day
17% of 6 decks +12% synergy
Bitter Reunion
12% of 8 decks +12% synergy
Mass Hysteria
10% of 10 decks +10% synergy
Candlekeep Sage
10% of 10 decks +10% synergy
Freed from the Real
10% of 10 decks +9% synergy
Phyrexian Scriptures
10% of 10 decks +9% synergy
Fervor
10% of 10 decks +9% synergy
Sneak Attack
10% of 10 decks +4% synergy
Animate Dead
10% of 10 decks +2% synergy
Underworld Breach
10% of 10 decks +1% synergy
Propaganda
10% of 10 decks -2% synergy
Mystic Remora
10% of 10 decks -6% synergy
Planeswalkers
Jace, Wielder of Mysteries
20% of 10 decks +19% synergy
Daretti, Scrap Savant
20% of 10 decks +18% synergy
Ashiok, Dream Render
20% of 10 decks +17% synergy
Vraska, Betrayal's Sting
14% of 7 decks +13% synergy
Jace, Architect of Thought
10% of 10 decks +10% synergy
Tezzeret, Betrayer of Flesh
10% of 10 decks +9% synergy
Saheeli Rai
10% of 10 decks +9% synergy
Nicol Bolas, Dragon-God
10% of 10 decks +6% synergy
Utility Lands
Riptide Laboratory
50% of 10 decks +46% synergy
Arena of Glory
50% of 2 decks +45% synergy
Minamo, School at Water's Edge
40% of 10 decks +37% synergy
Urborg, Tomb of Yawgmoth
40% of 10 decks +24% synergy
Otawara, Soaring City
30% of 10 decks +15% synergy
Vault of Whispers
20% of 10 decks +14% synergy
Great Furnace
20% of 10 decks +14% synergy
Seat of the Synod
20% of 10 decks +14% synergy
Desolate Lighthouse
20% of 10 decks +13% synergy
Reliquary Tower
20% of 10 decks -14% synergy
Flamekin Village
10% of 10 decks +10% synergy
Sanctum of Eternity
10% of 10 decks +10% synergy
Tolaria West
10% of 10 decks +10% synergy
Darksteel Citadel
10% of 10 decks +8% synergy
Inventors' Fair
10% of 10 decks +7% synergy
Command Beacon
10% of 10 decks +5% synergy
Temple of the False God
10% of 10 decks +0% synergy
Ancient Tomb
10% of 10 decks -3% synergy
Bojuka Bog
10% of 10 decks -15% synergy
Mana Artifacts
Sol Ring
90% of 10 decks -1% synergy
Arcane Signet
80% of 10 decks -8% synergy
Talisman of Creativity
50% of 10 decks +5% synergy
Fellwar Stone
40% of 10 decks +5% synergy
Talisman of Indulgence
40% of 10 decks -0% synergy
Talisman of Dominance
40% of 10 decks -7% synergy
Izzet Signet
30% of 10 decks -10% synergy
Nyx Lotus
20% of 10 decks +20% synergy
Chromatic Orrery
20% of 10 decks +19% synergy
Basalt Monolith
20% of 10 decks +17% synergy
Grim Monolith
20% of 10 decks +16% synergy
Mana Vault
20% of 10 decks +11% synergy
Dimir Signet
20% of 10 decks -24% synergy
Staff of Compleation
14% of 7 decks +13% synergy
Machine God's Effigy
12% of 8 decks +8% synergy
Ventifact Bottle
10% of 10 decks +10% synergy
Empowered Autogenerator
10% of 10 decks +10% synergy
Patriar's Seal
10% of 10 decks +9% synergy
Lotus Bloom
10% of 10 decks +9% synergy
Dreamstone Hedron
10% of 10 decks +9% synergy
Sol Talisman
10% of 10 decks +8% synergy
Sky Diamond
10% of 10 decks +8% synergy
Hedron Archive
10% of 10 decks +7% synergy
Lion's Eye Diamond
10% of 10 decks +5% synergy
Thran Dynamo
10% of 10 decks +4% synergy
Mox Diamond
10% of 10 decks +4% synergy
Lotus Petal
10% of 10 decks +1% synergy
Mana Crypt
10% of 10 decks -1% synergy
Mind Stone
10% of 10 decks -7% synergy
Commander's Sphere
10% of 10 decks -16% synergy
Lands
Command Tower
80% of 10 decks -12% synergy
Exotic Orchard
70% of 10 decks +13% synergy
Thundering Falls
60% of 5 decks +47% synergy
Undercity Sewers
60% of 5 decks +44% synergy
Drowned Catacomb
60% of 10 decks +21% synergy
Blood Crypt
60% of 10 decks +16% synergy
Steam Vents
60% of 10 decks +16% synergy
Watery Grave
60% of 10 decks +15% synergy
Badlands
50% of 10 decks +36% synergy
Underground River
50% of 10 decks +25% synergy
Polluted Delta
50% of 10 decks +20% synergy
Bloodstained Mire
50% of 10 decks +19% synergy
Training Center
50% of 10 decks +15% synergy
Dragonskull Summit
50% of 10 decks +8% synergy
Xander's Lounge
50% of 10 decks +6% synergy
City of Brass
40% of 10 decks +26% synergy
Volcanic Island
40% of 10 decks +26% synergy
Underground Sea
40% of 10 decks +26% synergy
Raucous Theater
40% of 5 decks +26% synergy
Shivan Reef
40% of 10 decks +12% synergy
Scalding Tarn
40% of 10 decks +9% synergy
Luxury Suite
40% of 10 decks +6% synergy
Morphic Pool
40% of 10 decks +6% synergy
Sunken Hollow
40% of 10 decks -2% synergy
Sulfur Falls
40% of 10 decks -2% synergy
Crumbling Necropolis
40% of 10 decks -19% synergy
Wooded Foothills
30% of 10 decks +22% synergy
Flooded Strand
30% of 10 decks +20% synergy
Maestros Theater
30% of 10 decks +16% synergy
Stormcarved Coast
30% of 10 decks +8% synergy
Terramorphic Expanse
30% of 10 decks +6% synergy
Sulfurous Springs
30% of 10 decks +6% synergy
Smoldering Marsh
30% of 10 decks -9% synergy
Scene of the Crime
20% of 5 decks +20% synergy
Mistvault Bridge
20% of 10 decks +15% synergy
Silverbluff Bridge
20% of 10 decks +15% synergy
Verdant Catacombs
20% of 10 decks +10% synergy
Marsh Flats
20% of 10 decks +10% synergy
Mana Confluence
20% of 10 decks +8% synergy
Rakdos Carnarium
20% of 10 decks +6% synergy
Izzet Boilerworks
20% of 10 decks +5% synergy
Dimir Aqueduct
20% of 10 decks +5% synergy
Temple of Deceit
20% of 10 decks +4% synergy
Temple of Epiphany
20% of 10 decks +3% synergy
Choked Estuary
20% of 10 decks +2% synergy
Haunted Ridge
20% of 10 decks -0% synergy
Shipwreck Marsh
20% of 10 decks -5% synergy
Evolving Wilds
20% of 10 decks -7% synergy
Contaminated Aquifer
12% of 8 decks +10% synergy
Power Depot
10% of 10 decks +10% synergy