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
3.89% of 1568 decks 61 decks
New Cards
Withering Torment
80% of 5 decks +46% synergy
Marvin, Murderous Mimic
60% of 5 decks +59% synergy
High Synergy Cards
Aetherling
98% of 61 decks +98% synergy
Quicksilver Elemental
89% of 61 decks +88% synergy
Nevinyrral's Disk
87% of 61 decks +85% synergy
Arcanis the Omnipotent
84% of 61 decks +82% synergy
Buried Alive
84% of 61 decks +80% synergy
Anger
87% of 61 decks +77% synergy
Torchling
69% of 61 decks +68% synergy
Asmodeus the Archfiend
69% of 61 decks +68% synergy
Walking Ballista
69% of 61 decks +68% synergy
Staff of Domination
67% of 61 decks +67% synergy
Top Cards
Gilded Lotus
87% of 61 decks +83% synergy
Faithless Looting
84% of 61 decks +64% synergy
Frantic Search
79% of 61 decks +65% synergy
Entomb
66% of 61 decks +59% synergy
Windfall
64% of 61 decks +40% synergy
Oriq Loremage
61% of 61 decks +60% synergy
Morphling
59% of 61 decks +59% synergy
Cavern Harpy
59% of 61 decks +59% synergy
Thousand-Year Elixir
57% of 61 decks +56% synergy
Ulamog's Dreadsire
57% of 7 decks +57% synergy
Creatures
Blood Pet
51% of 61 decks +51% synergy
Horseshoe Crab
51% of 61 decks +50% synergy
Triskelion
49% of 61 decks +49% synergy
Hateflayer
48% of 61 decks +47% synergy
Mirror-Mad Phantasm
39% of 61 decks +39% synergy
Tree of Perdition
39% of 61 decks +39% synergy
Pack Rat
38% of 61 decks +36% synergy
Jace's Archivist
38% of 61 decks +31% synergy
Cinderhaze Wretch
36% of 61 decks +36% synergy
Anthroplasm
36% of 61 decks +36% synergy
Sage of Hours
34% of 61 decks +34% synergy
Pili-Pala
31% of 61 decks +31% synergy
Shauku, Endbringer
30% of 61 decks +29% synergy
Thassa's Oracle
30% of 61 decks +21% synergy
Spikeshot Elder
26% of 61 decks +26% synergy
Ovinomancer
26% of 61 decks +26% synergy
Spark Double
26% of 61 decks +18% synergy
Displacer Kitten
25% of 52 decks +21% synergy
Minion of Leshrac
25% of 61 decks +24% synergy
Eater of the Dead
23% of 61 decks +23% synergy
Thassa, Deep-Dwelling
21% of 61 decks +18% synergy
Chainer, Dementia Master
20% of 61 decks +19% synergy
Deadeye Navigator
20% of 61 decks +18% synergy
Arco-Flagellant
18% of 44 decks +18% synergy
Death Cultist
18% of 61 decks +18% synergy
Avatar of Woe
18% of 61 decks +18% synergy
Deathbringer Thoctar
18% of 61 decks +18% synergy
Mercurial Chemister
18% of 61 decks +18% synergy
Dralnu, Lich Lord
16% of 61 decks +16% synergy
Cephalid Inkshrouder
16% of 61 decks +16% synergy
Galecaster Colossus
16% of 61 decks +15% synergy
Notion Thief
16% of 61 decks +7% synergy
Nightscape Familiar
16% of 61 decks -10% synergy
Memnarch
15% of 61 decks +15% synergy
Argivian Avenger
14% of 43 decks +14% synergy
Skyship Stalker
13% of 61 decks +13% synergy
Azami, Lady of Scrolls
13% of 61 decks +11% synergy
Sakashima of a Thousand Faces
13% of 61 decks +10% synergy
Dockside Extortionist
13% of 61 decks -2% synergy
Goro-Goro, Disciple of Ryusei
12% of 59 decks +10% synergy
Magus of the Bazaar
11% of 61 decks +11% synergy
Doom Whisperer
11% of 61 decks +10% synergy
Amaranthine Wall
10% of 61 decks +10% synergy
Blighted Bat
10% of 61 decks +10% synergy
Grinning Ignus
10% of 61 decks +10% synergy
Soliton
10% of 61 decks +10% synergy
Argent Sphinx
10% of 61 decks +10% synergy
Necrotic Ooze
10% of 61 decks +10% synergy
Goblin Engineer
10% of 61 decks +7% synergy
Omen Hawker
9% of 32 decks +9% synergy
Instants
Counterspell
52% of 61 decks +8% synergy
Essence Flux
51% of 61 decks +48% synergy
Demand Answers
44% of 16 decks +41% synergy
Cyclonic Rift
43% of 61 decks +15% synergy
Fact or Fiction
41% of 61 decks +29% synergy
Thrill of Possibility
38% of 61 decks +29% synergy
Arcane Denial
36% of 61 decks +8% synergy
Planar Incision
36% of 59 decks +34% synergy
Ghostly Flicker
33% of 61 decks +26% synergy
Chaos Warp
33% of 61 decks -8% synergy
Deflecting Swat
30% of 61 decks +13% synergy
Vampiric Tutor
30% of 61 decks +11% synergy
Fierce Guardianship
30% of 61 decks +10% synergy
An Offer You Can't Refuse
29% of 56 decks +6% synergy
Swan Song
26% of 61 decks +9% synergy
Negate
25% of 61 decks +1% synergy
Mana Drain
23% of 61 decks +7% synergy
Forbidden Alchemy
21% of 61 decks +19% synergy
Izzet Charm
21% of 61 decks +19% synergy
Reality Shift
21% of 61 decks +15% synergy
Blur
21% of 52 decks +20% synergy
Thirst for Knowledge
18% of 61 decks +16% synergy
Terminate
18% of 61 decks -10% synergy
Bedevil
16% of 61 decks -5% synergy
Hostile Negotiations
16% of 43 decks +15% synergy
Thought Scour
15% of 61 decks +13% synergy
Intuition
15% of 61 decks +13% synergy
Lim-Dûl's Vault
15% of 61 decks +12% synergy
Malakir Rebirth
15% of 61 decks +9% synergy
Deadly Rollick
15% of 61 decks +2% synergy
Dark Ritual
15% of 61 decks -15% synergy
Thirst for Discovery
14% of 59 decks +13% synergy
Teferi's Time Twist
13% of 61 decks +11% synergy
Force of Will
13% of 61 decks +2% synergy
Crosis's Charm
11% of 61 decks +7% synergy
Pact of Negation
11% of 61 decks +3% synergy
Mystical Tutor
11% of 61 decks -4% synergy
Maestros Charm
11% of 56 decks +6% synergy
Stubborn Denial
10% of 61 decks +9% synergy
Displace
10% of 61 decks +7% synergy
Evacuation
10% of 61 decks +7% synergy
Dispel
10% of 61 decks +6% synergy
Force of Negation
10% of 61 decks +1% synergy
Brainstorm
10% of 61 decks -9% synergy
Consider
8% of 59 decks +3% synergy
Mission Briefing
8% of 61 decks +8% synergy
Baleful Mastery
8% of 61 decks +3% synergy
Rakdos Charm
8% of 61 decks -7% synergy
Ancient Excavation
7% of 61 decks +6% synergy
Delay
7% of 61 decks +4% synergy
Sorceries
Blasphemous Act
51% of 61 decks +2% synergy
Demonic Tutor
46% of 61 decks +22% synergy
Unmarked Grave
43% of 61 decks +41% synergy
Gamble
39% of 61 decks +30% synergy
Cathartic Reunion
36% of 61 decks +34% synergy
Careful Study
31% of 61 decks +30% synergy
Lively Dirge
30% of 10 decks +28% synergy
Toxic Deluge
30% of 61 decks +9% synergy
Feed the Swarm
26% of 61 decks -9% synergy
Reckless Handling
25% of 32 decks +24% synergy
Ransack the Lab
25% of 61 decks +24% synergy
Final Parting
25% of 61 decks +23% synergy
Strategic Planning
20% of 61 decks +19% synergy
Whispering Madness
20% of 61 decks +13% synergy
Wheel of Fortune
18% of 61 decks +9% synergy
Vandalblast
16% of 61 decks -1% synergy
Tormenting Voice
15% of 61 decks +14% synergy
Grim Tutor
15% of 61 decks +10% synergy
By Force
11% of 61 decks +11% synergy
Notion Rain
11% of 61 decks +11% synergy
Compulsive Research
10% of 61 decks +9% synergy
Quasiduplicate
10% of 61 decks +9% synergy
Treasure Cruise
10% of 61 decks +6% synergy
Diabolic Tutor
10% of 61 decks +4% synergy
Wheel of Misfortune
10% of 61 decks +4% synergy
Preordain
8% of 61 decks -0% synergy
Damnation
8% of 61 decks -2% synergy
Ponder
8% of 61 decks -3% synergy
Consuming Tide
7% of 59 decks +6% synergy
Pieces of the Puzzle
7% of 61 decks +7% synergy
Necromantic Selection
7% of 61 decks +5% synergy
Reforge the Soul
7% of 61 decks +2% synergy
Imperial Seal
7% of 61 decks -0% synergy
Irenicus's Vile Duplication
6% of 52 decks +3% synergy
Utility Artifacts
Pendant of Prosperity
56% of 61 decks +55% synergy
Lightning Greaves
33% of 61 decks +3% synergy
Collector's Vault
30% of 20 decks +29% synergy
The One Ring
27% of 33 decks +12% synergy
Swiftfoot Boots
25% of 61 decks -1% synergy
Mirage Mirror
23% of 61 decks +22% synergy
Conjurer's Closet
21% of 61 decks +18% synergy
The Enigma Jewel
18% of 17 decks +17% synergy
Sting, the Glinting Dagger
13% of 30 decks +13% synergy
Cauldron of Souls
11% of 61 decks +11% synergy
Crystal Shard
11% of 61 decks +11% synergy
Battlemage's Bracers
10% of 61 decks +9% synergy
Illusionist's Bracers
10% of 61 decks +9% synergy
Phyrexian Altar
10% of 61 decks +6% synergy
Wishclaw Talisman
10% of 61 decks +3% synergy
Rings of Brighthearth
8% of 61 decks +7% synergy
Encroaching Mycosynth
8% of 39 decks +7% synergy
Magistrate's Scepter
7% of 61 decks +6% synergy
Heartstone
7% of 61 decks +6% synergy
Sensei's Divining Top
7% of 61 decks +2% synergy
Enchantments
Rhystic Study
38% of 61 decks +11% synergy
Rising of the Day
28% of 32 decks +24% synergy
Mystic Remora
23% of 61 decks +7% synergy
Candlekeep Sage
17% of 52 decks +17% synergy
Training Grounds
15% of 61 decks +14% synergy
Bitter Reunion
9% of 43 decks +9% synergy
Planeswalkers
Narset, Parter of Veils
15% of 61 decks +11% synergy
Ashiok, Dream Render
13% of 61 decks +11% synergy
Jace, Wielder of Mysteries
11% of 61 decks +10% synergy
Vraska, Betrayal's Sting
8% of 39 decks +6% synergy
Nicol Bolas, Dragon-God
7% of 61 decks +3% synergy
Utility Lands
Riptide Laboratory
57% of 61 decks +54% synergy
Minamo, School at Water's Edge
30% of 61 decks +27% synergy
Command Beacon
30% of 61 decks +25% synergy
Urborg, Tomb of Yawgmoth
23% of 61 decks +7% synergy
Flamekin Village
18% of 61 decks +18% synergy
Bojuka Bog
18% of 61 decks -7% synergy
Desolate Lighthouse
16% of 61 decks +9% synergy
Otawara, Soaring City
15% of 59 decks -0% synergy
Sanctum of Eternity
15% of 61 decks +14% synergy
Hanweir Battlements
11% of 61 decks +11% synergy
Reliquary Tower
11% of 61 decks -23% synergy
Geier Reach Sanitarium
10% of 61 decks +3% synergy
Takenuma, Abandoned Mire
8% of 59 decks +2% synergy
Vault of Whispers
8% of 61 decks +3% synergy
Seat of the Synod
8% of 61 decks +3% synergy
Ancient Tomb
8% of 61 decks -5% synergy
Hall of the Bandit Lord
7% of 61 decks +6% synergy
Mystic Sanctuary
7% of 61 decks +1% synergy
Great Furnace
7% of 61 decks +1% synergy
Mana Artifacts
Sol Ring
95% of 61 decks +4% synergy
Arcane Signet
87% of 61 decks -1% synergy
Fellwar Stone
54% of 61 decks +19% synergy
Izzet Signet
54% of 61 decks +14% synergy
Dimir Signet
52% of 61 decks +9% synergy
Talisman of Creativity
52% of 61 decks +8% synergy
Talisman of Dominance
44% of 61 decks -3% synergy
Relic of Sauron
43% of 30 decks +17% synergy
Rakdos Signet
43% of 61 decks +1% synergy
Talisman of Indulgence
38% of 61 decks -3% synergy
Basalt Monolith
26% of 61 decks +24% synergy
Coveted Jewel
23% of 61 decks +22% synergy
Commander's Sphere
21% of 61 decks -5% synergy
Skull of Ramos
16% of 61 decks +16% synergy
Lotus Petal
15% of 61 decks +6% synergy
Mind Stone
15% of 61 decks -2% synergy
Mana Vault
13% of 61 decks +4% synergy
Mana Crypt
11% of 61 decks +1% synergy
Chromatic Lantern
8% of 61 decks -10% synergy
Patriar's Seal
8% of 52 decks +7% synergy
Machine God's Effigy
7% of 43 decks +3% synergy
Ventifact Bottle
7% of 61 decks +7% synergy
Prismatic Geoscope
7% of 61 decks +7% synergy
Lands
Command Tower
89% of 61 decks -3% synergy
Exotic Orchard
70% of 61 decks +13% synergy
Xander's Lounge
61% of 56 decks +17% synergy
Watery Grave
57% of 61 decks +13% synergy
Bloodstained Mire
56% of 61 decks +25% synergy
Steam Vents
56% of 61 decks +12% synergy
Polluted Delta
54% of 61 decks +24% synergy
Blood Crypt
54% of 61 decks +10% synergy
Thundering Falls
54% of 13 decks +41% synergy
Undercity Sewers
46% of 13 decks +31% synergy
Scalding Tarn
46% of 61 decks +15% synergy
Crumbling Necropolis
46% of 61 decks -13% synergy
Sulfur Falls
39% of 61 decks -3% synergy
Raucous Theater
38% of 13 decks +24% synergy
Morphic Pool
38% of 61 decks +3% synergy
Drowned Catacomb
38% of 61 decks -2% synergy
Training Center
36% of 61 decks +1% synergy
Sunken Hollow
36% of 61 decks -6% synergy
Smoldering Marsh
34% of 61 decks -5% synergy
Shivan Reef
33% of 61 decks +5% synergy
Luxury Suite
33% of 61 decks -1% synergy
Evolving Wilds
28% of 61 decks +1% synergy
Dragonskull Summit
28% of 61 decks -14% synergy
Underground River
26% of 61 decks +1% synergy
City of Brass
25% of 61 decks +11% synergy
Sulfurous Springs
25% of 61 decks +0% synergy
Flooded Strand
23% of 61 decks +13% synergy
Izzet Boilerworks
21% of 61 decks +7% synergy
Rakdos Carnarium
20% of 61 decks +5% synergy
Dimir Aqueduct
20% of 61 decks +5% synergy
Terramorphic Expanse
20% of 61 decks -4% synergy
Misty Rainforest
18% of 61 decks +8% synergy
Mana Confluence
18% of 61 decks +6% synergy
Badlands
18% of 61 decks +4% synergy
Maestros Theater
18% of 56 decks +4% synergy
Verdant Catacombs
16% of 61 decks +7% synergy
Marsh Flats
16% of 61 decks +6% synergy
Volcanic Island
16% of 61 decks +2% synergy
Underground Sea
16% of 61 decks +2% synergy
Path of Ancestry
16% of 61 decks -16% synergy
River of Tears
15% of 61 decks +13% synergy
Temple of Deceit
15% of 61 decks -1% synergy
Temple of Epiphany
15% of 61 decks -2% synergy
Wooded Foothills
13% of 61 decks +5% synergy
Fabled Passage
13% of 61 decks +5% synergy
Darkwater Catacombs
13% of 61 decks +1% synergy
Stormcarved Coast
12% of 59 decks -10% synergy
Prismatic Vista
11% of 61 decks +7% synergy
Dismal Backwater
11% of 61 decks +5% synergy
Arid Mesa
11% of 61 decks +2% synergy