Mairsil, the Pretender + Endling + Blood Vassal + Crystalline Crawler

Mairsil, the Pretender
Endling
Blood Vassal
Crystalline Crawler

Requires
Mairsil, the Pretender must be on the battlefield. Endling must be in exile. Blood Vassal must be in exile. Crystalline Crawler 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 Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding one mana of any color.
  5. Repeat.
Results
Infinite colored mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Mairsil, the Pretender
4.00% of 1576 decks 63 decks
New Cards
Withering Torment
80% of 5 decks +42% synergy
Marvin, Murderous Mimic
80% of 5 decks +78% synergy
High Synergy Cards
Aetherling
98% of 63 decks +98% synergy
Quicksilver Elemental
89% of 63 decks +88% synergy
Nevinyrral's Disk
87% of 63 decks +86% synergy
Arcanis the Omnipotent
84% of 63 decks +83% synergy
Buried Alive
84% of 63 decks +80% synergy
Anger
87% of 63 decks +78% synergy
Asmodeus the Archfiend
69% of 62 decks +69% synergy
Torchling
68% of 63 decks +68% synergy
Staff of Domination
68% of 63 decks +68% synergy
Walking Ballista
67% of 63 decks +66% synergy
Top Cards
Gilded Lotus
87% of 63 decks +83% synergy
Faithless Looting
84% of 63 decks +64% synergy
Frantic Search
79% of 63 decks +65% synergy
Windfall
65% of 63 decks +41% synergy
Entomb
63% of 63 decks +57% synergy
Morphling
59% of 63 decks +58% synergy
Pendant of Prosperity
59% of 63 decks +58% synergy
Oriq Loremage
58% of 62 decks +57% synergy
Ulamog's Dreadsire
57% of 7 decks +57% synergy
Cavern Harpy
57% of 63 decks +57% synergy
Creatures
Blood Pet
51% of 63 decks +50% synergy
Horseshoe Crab
51% of 63 decks +50% synergy
Triskelion
49% of 63 decks +49% synergy
Hateflayer
48% of 63 decks +47% synergy
Mirror-Mad Phantasm
38% of 63 decks +38% synergy
Tree of Perdition
38% of 63 decks +38% synergy
Jace's Archivist
38% of 63 decks +31% synergy
Pack Rat
35% of 63 decks +33% synergy
Cinderhaze Wretch
33% of 63 decks +33% synergy
Anthroplasm
33% of 63 decks +33% synergy
Sage of Hours
32% of 63 decks +32% synergy
Shauku, Endbringer
30% of 63 decks +30% synergy
Pili-Pala
30% of 63 decks +30% synergy
Thassa's Oracle
29% of 62 decks +21% synergy
Spark Double
29% of 63 decks +20% synergy
Ovinomancer
27% of 63 decks +27% synergy
Spikeshot Elder
25% of 63 decks +25% synergy
Displacer Kitten
25% of 52 decks +21% synergy
Eater of the Dead
24% of 63 decks +24% synergy
Minion of Leshrac
24% of 63 decks +24% synergy
Thassa, Deep-Dwelling
21% of 62 decks +17% synergy
Death Cultist
19% of 63 decks +19% synergy
Dralnu, Lich Lord
19% of 63 decks +19% synergy
Chainer, Dementia Master
19% of 63 decks +19% synergy
Mercurial Chemister
19% of 63 decks +19% synergy
Deadeye Navigator
19% of 63 decks +17% synergy
Arco-Flagellant
18% of 44 decks +18% synergy
Avatar of Woe
17% of 63 decks +17% synergy
Deathbringer Thoctar
17% of 63 decks +17% synergy
Notion Thief
17% of 63 decks +8% synergy
Nightscape Familiar
17% of 63 decks -8% synergy
Cephalid Inkshrouder
16% of 63 decks +16% synergy
Galecaster Colossus
16% of 63 decks +14% synergy
Memnarch
14% of 63 decks +14% synergy
Azami, Lady of Scrolls
14% of 63 decks +12% synergy
Argivian Avenger
14% of 43 decks +14% synergy
Sakashima of a Thousand Faces
13% of 62 decks +10% synergy
Skyship Stalker
13% of 63 decks +13% synergy
Dockside Extortionist
13% of 63 decks -3% synergy
Goro-Goro, Disciple of Ryusei
12% of 60 decks +10% synergy
Magus of the Bazaar
11% of 63 decks +11% synergy
Doom Whisperer
11% of 63 decks +10% synergy
Amaranthine Wall
10% of 63 decks +9% synergy
Blighted Bat
10% of 63 decks +9% synergy
Grinning Ignus
10% of 63 decks +9% synergy
Soliton
10% of 63 decks +9% synergy
Argent Sphinx
10% of 63 decks +9% synergy
Necrotic Ooze
10% of 63 decks +9% synergy
Goblin Engineer
10% of 63 decks +7% synergy
Magus of the Wheel
10% of 63 decks +2% synergy
Instants
Counterspell
56% of 63 decks +11% synergy
Essence Flux
51% of 63 decks +48% synergy
Fact or Fiction
44% of 63 decks +32% synergy
Demand Answers
44% of 16 decks +41% synergy
Cyclonic Rift
41% of 63 decks +13% synergy
Thrill of Possibility
40% of 63 decks +31% synergy
Planar Incision
37% of 60 decks +35% synergy
Arcane Denial
37% of 63 decks +9% synergy
Ghostly Flicker
35% of 63 decks +28% synergy
Chaos Warp
32% of 63 decks -9% synergy
An Offer You Can't Refuse
30% of 56 decks +9% synergy
Deflecting Swat
29% of 62 decks +13% synergy
Fierce Guardianship
29% of 62 decks +10% synergy
Vampiric Tutor
27% of 63 decks +8% synergy
Negate
27% of 63 decks +3% synergy
Swan Song
25% of 63 decks +8% synergy
Reality Shift
24% of 63 decks +17% synergy
Forbidden Alchemy
22% of 63 decks +20% synergy
Izzet Charm
22% of 63 decks +19% synergy
Mana Drain
22% of 63 decks +6% synergy
Blur
21% of 52 decks +20% synergy
Terminate
19% of 63 decks -9% synergy
Thirst for Knowledge
17% of 63 decks +15% synergy
Bedevil
17% of 63 decks -4% synergy
Hostile Negotiations
16% of 43 decks +15% synergy
Thought Scour
16% of 63 decks +14% synergy
Malakir Rebirth
15% of 62 decks +8% synergy
Deadly Rollick
15% of 62 decks +2% synergy
Intuition
14% of 63 decks +12% synergy
Lim-Dûl's Vault
14% of 63 decks +11% synergy
Dark Ritual
14% of 63 decks -15% synergy
Thirst for Discovery
13% of 60 decks +13% synergy
Teferi's Time Twist
13% of 63 decks +11% synergy
Dispel
13% of 63 decks +9% synergy
Pact of Negation
13% of 63 decks +4% synergy
Stubborn Denial
11% of 63 decks +10% synergy
Displace
11% of 63 decks +8% synergy
Evacuation
11% of 63 decks +8% synergy
Crosis's Charm
11% of 63 decks +7% synergy
Force of Will
11% of 63 decks -0% synergy
Mystical Tutor
11% of 63 decks -4% synergy
Brainstorm
11% of 63 decks -9% synergy
Maestros Charm
11% of 56 decks +6% synergy
Consider
10% of 60 decks +4% synergy
Rakdos Charm
10% of 63 decks -6% synergy
Baleful Mastery
8% of 62 decks +3% synergy
Mission Briefing
8% of 63 decks +8% synergy
Ancient Excavation
8% of 63 decks +7% synergy
Opt
8% of 63 decks +3% synergy
Force of Negation
8% of 63 decks -1% synergy
Sorceries
Blasphemous Act
51% of 63 decks +2% synergy
Demonic Tutor
44% of 63 decks +20% synergy
Unmarked Grave
44% of 62 decks +41% synergy
Gamble
38% of 63 decks +29% synergy
Cathartic Reunion
37% of 63 decks +35% synergy
Careful Study
30% of 63 decks +29% synergy
Lively Dirge
30% of 10 decks +28% synergy
Toxic Deluge
29% of 63 decks +9% synergy
Feed the Swarm
26% of 62 decks -10% synergy
Ransack the Lab
25% of 63 decks +25% synergy
Reckless Handling
25% of 32 decks +24% synergy
Final Parting
24% of 63 decks +23% synergy
Strategic Planning
21% of 63 decks +20% synergy
Whispering Madness
21% of 63 decks +14% synergy
Tormenting Voice
17% of 63 decks +16% synergy
Wheel of Fortune
17% of 63 decks +8% synergy
Vandalblast
16% of 63 decks -2% synergy
Notion Rain
14% of 63 decks +14% synergy
Grim Tutor
14% of 63 decks +9% synergy
By Force
13% of 63 decks +12% synergy
Compulsive Research
11% of 63 decks +11% synergy
Quasiduplicate
11% of 63 decks +10% synergy
Treasure Cruise
11% of 63 decks +7% synergy
Wheel of Misfortune
10% of 62 decks +4% synergy
Diabolic Tutor
10% of 63 decks +4% synergy
Ponder
10% of 63 decks -1% synergy
Pieces of the Puzzle
8% of 63 decks +8% synergy
Preordain
8% of 63 decks -1% synergy
Damnation
8% of 63 decks -3% synergy
Consuming Tide
7% of 60 decks +6% synergy
Massacre
6% of 63 decks +6% synergy
Necromantic Selection
6% of 63 decks +5% synergy
Reforge the Soul
6% of 63 decks +1% synergy
Winds of Change
6% of 63 decks +1% synergy
Irenicus's Vile Duplication
6% of 52 decks +3% synergy
Utility Artifacts
Thousand-Year Elixir
57% of 63 decks +56% synergy
Lightning Greaves
33% of 63 decks +4% synergy
Collector's Vault
30% of 20 decks +29% synergy
The One Ring
24% of 33 decks +9% synergy
Swiftfoot Boots
24% of 63 decks -2% synergy
Mirage Mirror
22% of 63 decks +21% synergy
Conjurer's Closet
21% of 63 decks +17% synergy
The Enigma Jewel
18% of 17 decks +17% synergy
Sting, the Glinting Dagger
17% of 30 decks +16% synergy
Battlemage's Bracers
11% of 62 decks +11% synergy
Cauldron of Souls
11% of 63 decks +11% synergy
Crystal Shard
11% of 63 decks +10% synergy
Illusionist's Bracers
10% of 63 decks +9% synergy
Phyrexian Altar
10% of 63 decks +5% synergy
Wishclaw Talisman
10% of 63 decks +2% synergy
Rings of Brighthearth
8% of 63 decks +7% synergy
Encroaching Mycosynth
8% of 39 decks +7% synergy
Magistrate's Scepter
6% of 63 decks +6% synergy
Heartstone
6% of 63 decks +6% synergy
Sensei's Divining Top
6% of 63 decks +2% synergy
Enchantments
Rhystic Study
37% of 63 decks +9% synergy
Rising of the Day
28% of 32 decks +24% synergy
Mystic Remora
22% of 63 decks +6% synergy
Candlekeep Sage
17% of 52 decks +17% synergy
Training Grounds
14% of 63 decks +14% synergy
Bitter Reunion
9% of 43 decks +9% synergy
Planeswalkers
Narset, Parter of Veils
16% of 63 decks +12% synergy
Ashiok, Dream Render
14% of 63 decks +12% synergy
Jace, Wielder of Mysteries
11% of 63 decks +10% synergy
Vraska, Betrayal's Sting
8% of 39 decks +6% synergy
Nicol Bolas, Dragon-God
6% of 63 decks +2% synergy
Utility Lands
Riptide Laboratory
56% of 63 decks +52% synergy
Command Beacon
30% of 63 decks +25% synergy
Minamo, School at Water's Edge
29% of 63 decks +26% synergy
Urborg, Tomb of Yawgmoth
22% of 63 decks +6% synergy
Flamekin Village
17% of 63 decks +17% synergy
Desolate Lighthouse
17% of 63 decks +10% synergy
Bojuka Bog
17% of 63 decks -8% synergy
Sanctum of Eternity
14% of 63 decks +14% synergy
Otawara, Soaring City
13% of 60 decks -2% synergy
Hanweir Battlements
13% of 63 decks +12% synergy
Reliquary Tower
13% of 63 decks -22% synergy
Geier Reach Sanitarium
10% of 63 decks +2% synergy
Takenuma, Abandoned Mire
8% of 60 decks +2% synergy
Vault of Whispers
8% of 63 decks +2% synergy
Seat of the Synod
8% of 63 decks +2% synergy
Ancient Tomb
8% of 63 decks -6% synergy
Hall of the Bandit Lord
6% of 63 decks +6% synergy
Great Furnace
6% of 63 decks +1% synergy
Mana Artifacts
Sol Ring
95% of 63 decks +4% synergy
Arcane Signet
86% of 63 decks -2% synergy
Fellwar Stone
54% of 63 decks +18% synergy
Izzet Signet
54% of 63 decks +14% synergy
Talisman of Creativity
54% of 63 decks +9% synergy
Dimir Signet
52% of 63 decks +8% synergy
Relic of Sauron
47% of 30 decks +20% synergy
Talisman of Dominance
44% of 63 decks -3% synergy
Rakdos Signet
43% of 63 decks +1% synergy
Talisman of Indulgence
38% of 63 decks -2% synergy
Basalt Monolith
29% of 63 decks +26% synergy
Coveted Jewel
24% of 63 decks +23% synergy
Commander's Sphere
22% of 63 decks -4% synergy
Skull of Ramos
16% of 63 decks +16% synergy
Mind Stone
16% of 63 decks -1% synergy
Lotus Petal
13% of 63 decks +4% synergy
Mana Vault
13% of 63 decks +4% synergy
Mana Crypt
11% of 63 decks +0% synergy
Chromatic Lantern
8% of 63 decks -10% synergy
Patriar's Seal
8% of 52 decks +7% synergy
Machine God's Effigy
7% of 43 decks +3% synergy
Ventifact Bottle
6% of 63 decks +6% synergy
Prismatic Geoscope
6% of 63 decks +6% synergy
Lands
Command Tower
89% of 63 decks -3% synergy
Exotic Orchard
71% of 63 decks +14% synergy
Xander's Lounge
62% of 56 decks +19% synergy
Watery Grave
57% of 63 decks +12% synergy
Steam Vents
56% of 63 decks +12% synergy
Bloodstained Mire
54% of 63 decks +23% synergy
Blood Crypt
54% of 63 decks +10% synergy
Thundering Falls
54% of 13 decks +41% synergy
Polluted Delta
52% of 63 decks +22% synergy
Undercity Sewers
46% of 13 decks +31% synergy
Crumbling Necropolis
46% of 63 decks -13% synergy
Scalding Tarn
44% of 63 decks +13% synergy
Sulfur Falls
40% of 63 decks -3% synergy
Raucous Theater
38% of 13 decks +24% synergy
Morphic Pool
38% of 63 decks +4% synergy
Drowned Catacomb
38% of 63 decks -1% synergy
Training Center
37% of 62 decks +2% synergy
Smoldering Marsh
37% of 63 decks -2% synergy
Sunken Hollow
37% of 63 decks -5% synergy
Shivan Reef
33% of 63 decks +5% synergy
Luxury Suite
33% of 63 decks -1% synergy
Evolving Wilds
29% of 63 decks +1% synergy
Dragonskull Summit
29% of 63 decks -13% synergy
Underground River
27% of 63 decks +2% synergy
Sulfurous Springs
25% of 63 decks +1% synergy
City of Brass
24% of 63 decks +10% synergy
Flooded Strand
22% of 63 decks +12% synergy
Izzet Boilerworks
22% of 63 decks +7% synergy
Rakdos Carnarium
21% of 63 decks +6% synergy
Dimir Aqueduct
21% of 63 decks +5% synergy
Terramorphic Expanse
21% of 63 decks -3% synergy
Maestros Theater
18% of 56 decks +4% synergy
Misty Rainforest
17% of 63 decks +7% synergy
Badlands
17% of 63 decks +3% synergy
River of Tears
16% of 63 decks +14% synergy
Verdant Catacombs
16% of 63 decks +6% synergy
Marsh Flats
16% of 63 decks +6% synergy
Mana Confluence
16% of 63 decks +4% synergy
Volcanic Island
16% of 63 decks +2% synergy
Underground Sea
16% of 63 decks +2% synergy
Path of Ancestry
16% of 63 decks -17% synergy
Darkwater Catacombs
14% of 63 decks +2% synergy
Temple of Deceit
14% of 63 decks -1% synergy
Temple of Epiphany
14% of 63 decks -3% synergy
Stormcarved Coast
13% of 60 decks -9% synergy
Dismal Backwater
13% of 63 decks +6% synergy
Wooded Foothills
13% of 63 decks +5% synergy
Fabled Passage
13% of 63 decks +4% synergy
Haunted Ridge
12% of 60 decks -9% synergy
Shipwreck Marsh
12% of 60 decks -13% synergy