Mairsil, the Pretender + Endling + Blood Vassal + Deathbringer Thoctar

Mairsil, the Pretender
Endling
Blood Vassal
Deathbringer Thoctar

Requires
Mairsil, the Pretender must be on the battlefield. Endling must be in exile. Blood Vassal must be in exile. Deathbringer Thoctar must be in exile. Mairsil does not have a +1/+1 counter on it. Mana needed:
Steps
  1. Activate Mairsil using Endling's third ability by paying , giving Mairsil undying until end of turn.
  2. Activate Mairsil using Blood Vassal's ability by sacrificing it, adding .
  3. Mairsil dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  4. Activate Mairsil using Deathbringer Thoctar's ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
  5. Repeat.
Results
Infinite black mana. Infinite damage. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Mairsil, the Pretender
2.47% of 1576 decks 39 decks
High Synergy Cards
Aetherling
95% of 39 decks +94% synergy
Blood Pet
92% of 39 decks +92% synergy
Quicksilver Elemental
87% of 39 decks +87% synergy
Triskelion
85% of 39 decks +84% synergy
Nevinyrral's Disk
82% of 39 decks +81% synergy
Horseshoe Crab
77% of 39 decks +77% synergy
Torchling
74% of 39 decks +74% synergy
Arcanis the Omnipotent
74% of 39 decks +73% synergy
Asmodeus the Archfiend
69% of 39 decks +69% synergy
Oriq Loremage
69% of 39 decks +68% synergy
Top Cards
Anger
77% of 39 decks +67% synergy
Gilded Lotus
69% of 39 decks +65% synergy
Faithless Looting
67% of 39 decks +47% synergy
Buried Alive
64% of 39 decks +60% synergy
Cavern Harpy
62% of 39 decks +61% synergy
Tree of Perdition
62% of 39 decks +61% synergy
Fact or Fiction
62% of 39 decks +50% synergy
Hateflayer
59% of 39 decks +59% synergy
Pendant of Prosperity
59% of 39 decks +58% synergy
Staff of Domination
59% of 39 decks +58% synergy
Creatures
Mirror-Mad Phantasm
49% of 39 decks +48% synergy
Spikeshot Elder
44% of 39 decks +43% synergy
Pack Rat
44% of 39 decks +42% synergy
Anthroplasm
41% of 39 decks +41% synergy
Cinderhaze Wretch
38% of 39 decks +38% synergy
Sage of Hours
38% of 39 decks +38% synergy
Morphling
38% of 39 decks +38% synergy
Walking Ballista
33% of 39 decks +33% synergy
Cephalid Inkshrouder
31% of 39 decks +31% synergy
Jace's Archivist
31% of 39 decks +24% synergy
Crystalline Crawler
28% of 39 decks +28% synergy
Ovinomancer
26% of 39 decks +25% synergy
Pili-Pala
26% of 39 decks +25% synergy
Goro-Goro, Disciple of Ryusei
25% of 36 decks +23% synergy
Blighted Bat
23% of 39 decks +23% synergy
Soliton
23% of 39 decks +23% synergy
Shauku, Endbringer
23% of 39 decks +23% synergy
Mercurial Chemister
23% of 39 decks +23% synergy
Laboratory Maniac
21% of 39 decks +18% synergy
Thassa, Deep-Dwelling
21% of 39 decks +17% synergy
Arco-Flagellant
20% of 30 decks +20% synergy
Likeness Looter
19% of 16 decks +17% synergy
Argent Sphinx
18% of 39 decks +18% synergy
Deadeye Navigator
18% of 39 decks +16% synergy
Thassa's Oracle
18% of 39 decks +9% synergy
Notion Thief
18% of 39 decks +9% synergy
Visara the Dreadful
15% of 39 decks +15% synergy
Magus of the Bazaar
15% of 39 decks +15% synergy
Minion of Leshrac
15% of 39 decks +15% synergy
Azami, Lady of Scrolls
15% of 39 decks +13% synergy
Spark Double
15% of 39 decks +7% synergy
Argivian Avenger
13% of 30 decks +13% synergy
Skyship Stalker
13% of 39 decks +13% synergy
Grinning Ignus
13% of 39 decks +13% synergy
Dralnu, Lich Lord
13% of 39 decks +13% synergy
Chainer, Dementia Master
13% of 39 decks +13% synergy
Avatar of Woe
13% of 39 decks +12% synergy
Fatestitcher
13% of 39 decks +12% synergy
Doom Whisperer
13% of 39 decks +12% synergy
Galecaster Colossus
13% of 39 decks +11% synergy
Sakashima the Impostor
13% of 39 decks +11% synergy
Dregscape Zombie
10% of 39 decks +10% synergy
Narcomoeba
10% of 39 decks +10% synergy
Myr Propagator
10% of 39 decks +10% synergy
Grand Architect
10% of 39 decks +10% synergy
Knacksaw Clique
10% of 39 decks +10% synergy
Amaranthine Wall
10% of 39 decks +10% synergy
Patron of the Moon
10% of 39 decks +10% synergy
Skirge Familiar
10% of 39 decks +10% synergy
Necrotic Ooze
10% of 39 decks +10% synergy
Instants
Counterspell
54% of 39 decks +9% synergy
Frantic Search
51% of 39 decks +37% synergy
Entomb
44% of 39 decks +37% synergy
Essence Flux
41% of 39 decks +38% synergy
Thrill of Possibility
41% of 39 decks +33% synergy
Negate
41% of 39 decks +17% synergy
Planar Incision
39% of 36 decks +37% synergy
Demand Answers
36% of 11 decks +34% synergy
Blur
36% of 36 decks +35% synergy
Ghostly Flicker
31% of 39 decks +24% synergy
Chaos Warp
31% of 39 decks -10% synergy
Evacuation
28% of 39 decks +25% synergy
Izzet Charm
23% of 39 decks +20% synergy
Arcane Denial
23% of 39 decks -5% synergy
Teferi's Time Twist
21% of 39 decks +19% synergy
Hostile Negotiations
20% of 30 decks +19% synergy
Cyclonic Rift
18% of 39 decks -10% synergy
Terminate
18% of 39 decks -10% synergy
Otherworldly Gaze
16% of 37 decks +16% synergy
Price of Fame
15% of 39 decks +15% synergy
Thirst for Knowledge
15% of 39 decks +13% synergy
Dispel
15% of 39 decks +11% synergy
Vampiric Tutor
15% of 39 decks -3% synergy
Dark Ritual
15% of 39 decks -14% synergy
An Offer You Can't Refuse
14% of 36 decks -8% synergy
Consider
14% of 37 decks +8% synergy
Hagra Mauling
13% of 39 decks +11% synergy
Thought Scour
13% of 39 decks +11% synergy
Rakdos Charm
13% of 39 decks -2% synergy
Thirst for Discovery
11% of 36 decks +11% synergy
Maestros Charm
11% of 36 decks +6% synergy
Cathartic Pyre
11% of 37 decks +11% synergy
Into the Roil
10% of 39 decks +10% synergy
Perplex
10% of 39 decks +9% synergy
Red Elemental Blast
10% of 39 decks +5% synergy
Force of Will
10% of 39 decks -1% synergy
Mana Drain
10% of 39 decks -6% synergy
Deflecting Swat
10% of 39 decks -6% synergy
Swan Song
10% of 39 decks -7% synergy
Brainstorm
10% of 39 decks -9% synergy
Bedevil
10% of 39 decks -12% synergy
Dispersal Shield
8% of 39 decks +8% synergy
Necrologia
8% of 39 decks +8% synergy
Ancient Excavation
8% of 39 decks +7% synergy
Run Away Together
8% of 39 decks +7% synergy
Jwari Disruption
8% of 39 decks +7% synergy
Saw It Coming
8% of 39 decks +7% synergy
Stubborn Denial
8% of 39 decks +7% synergy
Mana Leak
8% of 39 decks +6% synergy
Forbidden Alchemy
8% of 39 decks +6% synergy
Sorceries
Unmarked Grave
56% of 39 decks +54% synergy
Blasphemous Act
46% of 39 decks -3% synergy
Final Parting
38% of 39 decks +37% synergy
Cathartic Reunion
38% of 39 decks +37% synergy
Windfall
31% of 39 decks +7% synergy
Reckless Handling
25% of 20 decks +24% synergy
Demonic Tutor
23% of 39 decks -1% synergy
Feed the Swarm
23% of 39 decks -13% synergy
Treasure Cruise
21% of 39 decks +16% synergy
Diabolic Tutor
21% of 39 decks +15% synergy
Whispering Madness
21% of 39 decks +13% synergy
Gamble
21% of 39 decks +11% synergy
Strategic Planning
18% of 39 decks +17% synergy
Careful Study
18% of 39 decks +17% synergy
Ransack the Lab
15% of 39 decks +15% synergy
Languish
15% of 39 decks +13% synergy
Dread Return
15% of 39 decks +12% synergy
Consuming Tide
14% of 36 decks +13% synergy
Tormenting Voice
13% of 39 decks +12% synergy
Chain Reaction
13% of 39 decks +9% synergy
Grim Tutor
13% of 39 decks +8% synergy
Vandalblast
13% of 39 decks -5% synergy
Fervent Mastery
10% of 39 decks +10% synergy
Notion Rain
10% of 39 decks +10% synergy
Decree of Pain
10% of 39 decks +3% synergy
Dimir Machinations
8% of 39 decks +8% synergy
Necromantic Selection
8% of 39 decks +7% synergy
Scheming Symmetry
8% of 39 decks +6% synergy
Sign in Blood
8% of 39 decks +3% synergy
Wheel of Misfortune
8% of 39 decks +2% synergy
Wheel of Fortune
8% of 39 decks -1% synergy
Damnation
8% of 39 decks -3% synergy
Ponder
8% of 39 decks -3% synergy
Toxic Deluge
8% of 39 decks -12% synergy
Utility Artifacts
Thousand-Year Elixir
36% of 39 decks +35% synergy
Swiftfoot Boots
33% of 39 decks +7% synergy
Conjurer's Closet
23% of 39 decks +20% synergy
Mirage Mirror
18% of 39 decks +17% synergy
Lightning Greaves
18% of 39 decks -12% synergy
Netherborn Altar
15% of 39 decks +15% synergy
Crystal Shard
15% of 39 decks +15% synergy
The One Ring
15% of 20 decks +0% synergy
Magistrate's Scepter
13% of 39 decks +13% synergy
Cauldron of Souls
13% of 39 decks +13% synergy
Illusionist's Bracers
13% of 39 decks +12% synergy
Battlemage's Bracers
10% of 39 decks +10% synergy
Rings of Brighthearth
10% of 39 decks +9% synergy
Mindcrank
10% of 39 decks +8% synergy
Blade of Selves
10% of 39 decks +6% synergy
Phyrexian Altar
10% of 39 decks +6% synergy
Wayfarer's Bauble
10% of 39 decks -8% synergy
Wand of Wonder
8% of 36 decks +6% synergy
Oblivion Stone
8% of 39 decks +7% synergy
Sensei's Divining Top
8% of 39 decks +3% synergy
Enchantments
Candlekeep Sage
19% of 36 decks +19% synergy
Rising of the Day
17% of 18 decks +12% synergy
Fervor
15% of 39 decks +14% synergy
Propaganda
13% of 39 decks +1% synergy
Mystic Remora
13% of 39 decks -3% synergy
Rhystic Study
13% of 39 decks -14% synergy
Training Grounds
10% of 39 decks +10% synergy
Search for Azcanta
8% of 39 decks +7% synergy
Planeswalkers
Jace, Wielder of Mysteries
13% of 39 decks +11% synergy
Ashiok, Dream Render
8% of 39 decks +5% synergy
Utility Lands
Riptide Laboratory
51% of 39 decks +48% synergy
Vault of Whispers
21% of 39 decks +15% synergy
Great Furnace
21% of 39 decks +15% synergy
Seat of the Synod
21% of 39 decks +15% synergy
Desolate Lighthouse
21% of 39 decks +14% synergy
Command Beacon
18% of 39 decks +13% synergy
Geier Reach Sanitarium
18% of 39 decks +11% synergy
Bojuka Bog
18% of 39 decks -7% synergy
Minamo, School at Water's Edge
13% of 39 decks +10% synergy
Temple of the False God
13% of 39 decks +3% synergy
Sanctum of Eternity
10% of 39 decks +10% synergy
Flamekin Village
8% of 39 decks +7% synergy
Urborg, Tomb of Yawgmoth
8% of 39 decks -8% synergy
Reliquary Tower
8% of 39 decks -27% synergy
Mana Artifacts
Sol Ring
90% of 39 decks -1% synergy
Arcane Signet
82% of 39 decks -6% synergy
Izzet Signet
64% of 39 decks +24% synergy
Dimir Signet
59% of 39 decks +15% synergy
Rakdos Signet
46% of 39 decks +4% synergy
Fellwar Stone
44% of 39 decks +8% synergy
Talisman of Creativity
44% of 39 decks -1% synergy
Talisman of Dominance
41% of 39 decks -6% synergy
Basalt Monolith
26% of 39 decks +23% synergy
Talisman of Indulgence
26% of 39 decks -15% synergy
Mind Stone
23% of 39 decks +6% synergy
Commander's Sphere
21% of 39 decks -6% synergy
Coveted Jewel
18% of 39 decks +17% synergy
Patriar's Seal
14% of 36 decks +13% synergy
Ventifact Bottle
13% of 39 decks +13% synergy
Sky Diamond
10% of 39 decks +8% synergy
Thought Vessel
8% of 39 decks -11% synergy
Lands
Command Tower
77% of 39 decks -15% synergy
Exotic Orchard
72% of 39 decks +15% synergy
Crumbling Necropolis
59% of 39 decks +0% synergy
Thundering Falls
50% of 10 decks +37% synergy
Undercity Sewers
50% of 10 decks +34% synergy
Shivan Reef
49% of 39 decks +21% synergy
Sunken Hollow
46% of 39 decks +4% synergy
Ferrous Lake
43% of 7 decks +38% synergy
Smoldering Marsh
41% of 39 decks +2% synergy
Raucous Theater
40% of 10 decks +26% synergy
Terramorphic Expanse
38% of 39 decks +15% synergy
Underground River
38% of 39 decks +14% synergy
Evolving Wilds
38% of 39 decks +11% synergy
Maestros Theater
36% of 36 decks +22% synergy
Sulfur Falls
33% of 39 decks -9% synergy
Drowned Catacomb
28% of 39 decks -11% synergy
Dragonskull Summit
28% of 39 decks -13% synergy
Xander's Lounge
28% of 36 decks -16% synergy
Choked Estuary
26% of 39 decks +7% synergy
Temple of Deceit
23% of 39 decks +7% synergy
Temple of Epiphany
23% of 39 decks +6% synergy
Sulfurous Springs
23% of 39 decks -1% synergy
Polluted Delta
23% of 39 decks -7% synergy
Bloodstained Mire
23% of 39 decks -8% synergy
Blood Crypt
23% of 39 decks -21% synergy
Steam Vents
23% of 39 decks -21% synergy
Watery Grave
23% of 39 decks -22% synergy
Foreboding Ruins
21% of 39 decks +0% synergy
Scalding Tarn
21% of 39 decks -11% synergy
Path of Ancestry
21% of 39 decks -12% synergy
Morphic Pool
21% of 39 decks -14% synergy
Shadowblood Ridge
18% of 39 decks +7% synergy
Frostboil Snarl
18% of 39 decks +4% synergy
Training Center
18% of 39 decks -18% synergy
Temple of Malice
15% of 39 decks +1% synergy
Dimir Aqueduct
15% of 39 decks +0% synergy
Stormcarved Coast
14% of 36 decks -8% synergy
Haunted Ridge
14% of 37 decks -7% synergy
Shipwreck Marsh
14% of 37 decks -12% synergy
Grixis Panorama
13% of 39 decks +7% synergy
City of Brass
13% of 39 decks -1% synergy
Myriad Landscape
13% of 39 decks -2% synergy
Rakdos Carnarium
13% of 39 decks -2% synergy
Luxury Suite
13% of 39 decks -22% synergy
Swiftwater Cliffs
10% of 39 decks +3% synergy
Wooded Foothills
10% of 39 decks +2% synergy
Flooded Strand
10% of 39 decks +0% synergy
Mana Confluence
10% of 39 decks -2% synergy
Darkwater Catacombs
10% of 39 decks -2% synergy
Badlands
10% of 39 decks -4% synergy