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

Mairsil, the Pretender
Endling
Blood Pet
Crystalline Crawler

Requires
Mairsil, the Pretender must be on the battlefield. Endling must be in exile. Blood Pet 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 Pet'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
2.67% of 1574 decks 42 decks
High Synergy Cards
Aetherling
98% of 42 decks +97% synergy
Quicksilver Elemental
90% of 42 decks +90% synergy
Nevinyrral's Disk
88% of 42 decks +87% synergy
Arcanis the Omnipotent
83% of 42 decks +82% synergy
Torchling
79% of 42 decks +78% synergy
Buried Alive
81% of 42 decks +77% synergy
Asmodeus the Archfiend
71% of 42 decks +71% synergy
Blood Vassal
69% of 42 decks +69% synergy
Staff of Domination
69% of 42 decks +68% synergy
Triskelion
67% of 42 decks +66% synergy
Top Cards
Gilded Lotus
81% of 42 decks +77% synergy
Anger
74% of 42 decks +64% synergy
Entomb
71% of 42 decks +65% synergy
Faithless Looting
69% of 42 decks +49% synergy
Windfall
64% of 42 decks +40% synergy
Horseshoe Crab
62% of 42 decks +62% synergy
Walking Ballista
60% of 42 decks +59% synergy
Morphling
57% of 42 decks +57% synergy
Oriq Loremage
55% of 42 decks +54% synergy
Frantic Search
55% of 42 decks +41% synergy
Creatures
Cavern Harpy
50% of 42 decks +50% synergy
Pili-Pala
48% of 42 decks +47% synergy
Tree of Perdition
48% of 42 decks +47% synergy
Sage of Hours
45% of 42 decks +45% synergy
Anthroplasm
43% of 42 decks +43% synergy
Hateflayer
43% of 42 decks +42% synergy
Pack Rat
43% of 42 decks +41% synergy
Spikeshot Elder
40% of 42 decks +40% synergy
Shauku, Endbringer
40% of 42 decks +40% synergy
Cinderhaze Wretch
38% of 42 decks +38% synergy
Mirror-Mad Phantasm
38% of 42 decks +38% synergy
Jace's Archivist
38% of 42 decks +31% synergy
Deathbringer Thoctar
29% of 42 decks +28% synergy
Thassa's Oracle
29% of 42 decks +20% synergy
Ovinomancer
26% of 42 decks +26% synergy
Spark Double
26% of 42 decks +18% synergy
Minion of Leshrac
24% of 42 decks +24% synergy
Displacer Kitten
24% of 38 decks +20% synergy
Arco-Flagellant
22% of 32 decks +22% synergy
Cephalid Inkshrouder
21% of 42 decks +21% synergy
Deadeye Navigator
21% of 42 decks +20% synergy
Mercurial Chemister
19% of 42 decks +19% synergy
Thassa, Deep-Dwelling
19% of 42 decks +16% synergy
Magus of the Bazaar
17% of 42 decks +17% synergy
Soliton
17% of 42 decks +17% synergy
Eater of the Dead
17% of 42 decks +16% synergy
Avatar of Woe
17% of 42 decks +16% synergy
Nightscape Familiar
17% of 42 decks -9% synergy
Goro-Goro, Disciple of Ryusei
15% of 41 decks +13% synergy
Death Cultist
14% of 42 decks +14% synergy
Amaranthine Wall
14% of 42 decks +14% synergy
Skirge Familiar
14% of 42 decks +14% synergy
Doom Whisperer
14% of 42 decks +13% synergy
Omen Hawker
13% of 23 decks +12% synergy
Farmstead Gleaner
12% of 42 decks +12% synergy
Knacksaw Clique
12% of 42 decks +12% synergy
Skyship Stalker
12% of 42 decks +12% synergy
Grinning Ignus
12% of 42 decks +12% synergy
Dralnu, Lich Lord
12% of 42 decks +12% synergy
Necrotic Ooze
12% of 42 decks +12% synergy
Sakashima of a Thousand Faces
12% of 42 decks +9% synergy
Notion Thief
12% of 42 decks +3% synergy
Dockside Extortionist
12% of 42 decks -2% synergy
Solphim, Mayhem Dominus
11% of 27 decks +5% synergy
Argivian Avenger
10% of 30 decks +10% synergy
Argent Sphinx
10% of 42 decks +9% synergy
Laboratory Maniac
10% of 42 decks +7% synergy
Goblin Engineer
10% of 42 decks +7% synergy
Magus of the Wheel
10% of 42 decks +2% synergy
Myr Propagator
7% of 42 decks +7% synergy
Instants
Essence Flux
50% of 42 decks +47% synergy
Counterspell
50% of 42 decks +5% synergy
Ghostly Flicker
43% of 42 decks +36% synergy
Thrill of Possibility
40% of 42 decks +32% synergy
Demand Answers
40% of 10 decks +37% synergy
Planar Incision
34% of 41 decks +32% synergy
Cyclonic Rift
33% of 42 decks +6% synergy
Blur
32% of 38 decks +31% synergy
Fact or Fiction
29% of 42 decks +17% synergy
Negate
29% of 42 decks +5% synergy
Arcane Denial
29% of 42 decks +0% synergy
Deflecting Swat
26% of 42 decks +10% synergy
Vampiric Tutor
24% of 42 decks +5% synergy
Terminate
24% of 42 decks -4% synergy
Chaos Warp
24% of 42 decks -17% synergy
Forbidden Alchemy
21% of 42 decks +19% synergy
Izzet Charm
21% of 42 decks +19% synergy
Fierce Guardianship
21% of 42 decks +2% synergy
Mana Drain
19% of 42 decks +3% synergy
Swan Song
19% of 42 decks +2% synergy
Teferi's Time Twist
17% of 42 decks +15% synergy
Thought Scour
17% of 42 decks +15% synergy
Intuition
17% of 42 decks +15% synergy
Evacuation
17% of 42 decks +13% synergy
Force of Will
17% of 42 decks +5% synergy
An Offer You Can't Refuse
15% of 40 decks -7% synergy
Rakdos Charm
14% of 42 decks -1% synergy
Dark Ritual
14% of 42 decks -15% synergy
Hostile Negotiations
13% of 30 decks +12% synergy
Consider
12% of 41 decks +7% synergy
Displace
12% of 42 decks +9% synergy
Pact of Negation
12% of 42 decks +4% synergy
Bedevil
12% of 42 decks -9% synergy
Maestros Charm
10% of 40 decks +5% synergy
Infernal Grasp
10% of 41 decks +4% synergy
Thirst for Knowledge
10% of 42 decks +7% synergy
Dispel
10% of 42 decks +6% synergy
Malakir Rebirth
10% of 42 decks +3% synergy
Reality Shift
10% of 42 decks +3% synergy
Flusterstorm
10% of 42 decks +2% synergy
Demonic Consultation
10% of 42 decks +2% synergy
Force of Negation
10% of 42 decks +1% synergy
Mystical Tutor
10% of 42 decks -6% synergy
Brainstorm
10% of 42 decks -10% synergy
Thirst for Discovery
7% of 41 decks +7% synergy
Ancient Excavation
7% of 42 decks +7% synergy
Countersquall
7% of 42 decks +5% synergy
Dramatic Reversal
7% of 42 decks +5% synergy
Opt
7% of 42 decks +2% synergy
Red Elemental Blast
7% of 42 decks +2% synergy
Sorceries
Unmarked Grave
48% of 42 decks +46% synergy
Demonic Tutor
43% of 42 decks +19% synergy
Gamble
40% of 42 decks +31% synergy
Blasphemous Act
40% of 42 decks -9% synergy
Cathartic Reunion
36% of 42 decks +34% synergy
Final Parting
31% of 42 decks +30% synergy
Careful Study
26% of 42 decks +25% synergy
Reckless Handling
26% of 23 decks +25% synergy
Ransack the Lab
21% of 42 decks +21% synergy
Wheel of Fortune
21% of 42 decks +12% synergy
Vandalblast
21% of 42 decks +4% synergy
Grim Tutor
19% of 42 decks +14% synergy
Whispering Madness
19% of 42 decks +12% synergy
Toxic Deluge
19% of 42 decks -1% synergy
Damnation
14% of 42 decks +4% synergy
Strategic Planning
12% of 42 decks +11% synergy
Tormenting Voice
12% of 42 decks +11% synergy
Treasure Cruise
12% of 42 decks +8% synergy
Feed the Swarm
12% of 42 decks -24% synergy
Quasiduplicate
10% of 42 decks +9% synergy
Necromantic Selection
10% of 42 decks +8% synergy
Profane Tutor
10% of 42 decks +4% synergy
Diabolic Tutor
10% of 42 decks +4% synergy
Wheel of Misfortune
10% of 42 decks +4% synergy
Irenicus's Vile Duplication
8% of 38 decks +5% synergy
By Force
7% of 42 decks +7% synergy
Notion Rain
7% of 42 decks +7% synergy
Compulsive Research
7% of 42 decks +7% synergy
Reforge the Soul
7% of 42 decks +2% synergy
Imperial Seal
7% of 42 decks +0% synergy
Jeska's Will
7% of 42 decks -10% synergy
Utility Artifacts
Pendant of Prosperity
52% of 42 decks +52% synergy
Thousand-Year Elixir
50% of 42 decks +49% synergy
Collector's Vault
38% of 13 decks +37% synergy
The One Ring
33% of 24 decks +19% synergy
Lightning Greaves
33% of 42 decks +4% synergy
Swiftfoot Boots
31% of 42 decks +5% synergy
Mirage Mirror
24% of 42 decks +23% synergy
Conjurer's Closet
24% of 42 decks +21% synergy
Rings of Brighthearth
17% of 42 decks +15% synergy
Heartstone
14% of 42 decks +14% synergy
Cauldron of Souls
14% of 42 decks +14% synergy
Illusionist's Bracers
14% of 42 decks +13% synergy
Phyrexian Altar
12% of 42 decks +8% synergy
Encroaching Mycosynth
10% of 29 decks +9% synergy
Magistrate's Scepter
10% of 42 decks +9% synergy
Battlemage's Bracers
10% of 42 decks +9% synergy
Crystal Shard
10% of 42 decks +9% synergy
Lithoform Engine
10% of 42 decks +6% synergy
Sensei's Divining Top
10% of 42 decks +5% synergy
Wishclaw Talisman
10% of 42 decks +2% synergy
Netherborn Altar
7% of 42 decks +7% synergy
Panharmonicon
7% of 42 decks +1% synergy
Enchantments
Rhystic Study
33% of 42 decks +7% synergy
Rising of the Day
29% of 21 decks +24% synergy
Mystic Remora
29% of 42 decks +13% synergy
Training Grounds
26% of 42 decks +25% synergy
Candlekeep Sage
16% of 38 decks +15% synergy
Propaganda
10% of 42 decks -3% synergy
Sneak Attack
7% of 42 decks +1% synergy
Planeswalkers
Jace, Wielder of Mysteries
14% of 42 decks +13% synergy
Ashiok, Dream Render
14% of 42 decks +12% synergy
Vraska, Betrayal's Sting
14% of 29 decks +12% synergy
Narset, Parter of Veils
12% of 42 decks +8% synergy
Nicol Bolas, Dragon-God
7% of 42 decks +3% synergy
Utility Lands
Riptide Laboratory
45% of 42 decks +42% synergy
Command Beacon
29% of 42 decks +24% synergy
Sanctum of Eternity
19% of 42 decks +19% synergy
Bojuka Bog
19% of 42 decks -6% synergy
Minamo, School at Water's Edge
17% of 42 decks +14% synergy
Desolate Lighthouse
17% of 42 decks +10% synergy
Urborg, Tomb of Yawgmoth
14% of 42 decks -1% synergy
Geier Reach Sanitarium
12% of 42 decks +5% synergy
Otawara, Soaring City
10% of 41 decks -5% synergy
Flamekin Village
10% of 42 decks +9% synergy
Reliquary Tower
10% of 42 decks -25% synergy
Hall of the Bandit Lord
7% of 42 decks +7% synergy
Vault of Whispers
7% of 42 decks +2% synergy
Great Furnace
7% of 42 decks +2% synergy
Seat of the Synod
7% of 42 decks +2% synergy
Temple of the False God
7% of 42 decks -2% synergy
Ancient Tomb
7% of 42 decks -6% synergy
Mana Artifacts
Sol Ring
93% of 42 decks +2% synergy
Arcane Signet
88% of 42 decks -0% synergy
Fellwar Stone
50% of 42 decks +15% synergy
Izzet Signet
50% of 42 decks +10% synergy
Dimir Signet
50% of 42 decks +7% synergy
Talisman of Creativity
45% of 42 decks +1% synergy
Talisman of Dominance
40% of 42 decks -7% synergy
Rakdos Signet
38% of 42 decks -4% synergy
Relic of Sauron
33% of 18 decks +7% synergy
Talisman of Indulgence
33% of 42 decks -7% synergy
Basalt Monolith
31% of 42 decks +28% synergy
Coveted Jewel
24% of 42 decks +23% synergy
Commander's Sphere
17% of 42 decks -9% synergy
Thran Dynamo
14% of 42 decks +8% synergy
Patriar's Seal
13% of 38 decks +12% synergy
Mana Vault
12% of 42 decks +3% synergy
Mind Stone
12% of 42 decks -5% synergy
Ventifact Bottle
10% of 42 decks +10% synergy
Chromatic Orrery
10% of 42 decks +9% synergy
Mana Crypt
10% of 42 decks -0% synergy
Chromatic Lantern
10% of 42 decks -9% synergy
Skull of Ramos
7% of 42 decks +7% synergy
Prismatic Geoscope
7% of 42 decks +7% synergy
Grim Monolith
7% of 42 decks +3% synergy
Jeweled Lotus
7% of 42 decks +1% synergy
Lands
Command Tower
88% of 42 decks -4% synergy
Exotic Orchard
74% of 42 decks +17% synergy
Thundering Falls
62% of 8 decks +50% synergy
Undercity Sewers
62% of 8 decks +47% synergy
Steam Vents
52% of 42 decks +9% synergy
Raucous Theater
50% of 8 decks +36% synergy
Blood Crypt
50% of 42 decks +6% synergy
Watery Grave
50% of 42 decks +5% synergy
Bloodstained Mire
48% of 42 decks +17% synergy
Crumbling Necropolis
48% of 42 decks -11% synergy
Xander's Lounge
48% of 40 decks +4% synergy
Polluted Delta
45% of 42 decks +15% synergy
Scalding Tarn
40% of 42 decks +10% synergy
Morphic Pool
36% of 42 decks +1% synergy
Smoldering Marsh
36% of 42 decks -3% synergy
Shivan Reef
33% of 42 decks +6% synergy
Flooded Strand
31% of 42 decks +21% synergy
Underground River
31% of 42 decks +6% synergy
Drowned Catacomb
31% of 42 decks -9% synergy
Sunken Hollow
31% of 42 decks -11% synergy
Dragonskull Summit
31% of 42 decks -11% synergy
City of Brass
29% of 42 decks +15% synergy
Luxury Suite
29% of 42 decks -6% synergy
Training Center
29% of 42 decks -7% synergy
Sulfur Falls
29% of 42 decks -14% synergy
Verdant Catacombs
26% of 42 decks +17% synergy
Misty Rainforest
26% of 42 decks +16% synergy
Sulfurous Springs
26% of 42 decks +2% synergy
Evolving Wilds
26% of 42 decks -1% synergy
Wooded Foothills
24% of 42 decks +16% synergy
Marsh Flats
24% of 42 decks +14% synergy
Underground Sea
24% of 42 decks +10% synergy
Terramorphic Expanse
24% of 42 decks +0% synergy
Mana Confluence
21% of 42 decks +10% synergy
Badlands
21% of 42 decks +7% synergy
Izzet Boilerworks
21% of 42 decks +7% synergy
Dimir Aqueduct
21% of 42 decks +7% synergy
Maestros Theater
20% of 40 decks +6% synergy
Temple of Malice
19% of 42 decks +5% synergy
Volcanic Island
19% of 42 decks +5% synergy
Rakdos Carnarium
19% of 42 decks +5% synergy
Temple of Deceit
19% of 42 decks +4% synergy
Temple of Epiphany
19% of 42 decks +2% synergy
Prismatic Vista
17% of 42 decks +12% synergy
Arid Mesa
17% of 42 decks +7% synergy
Path of Ancestry
14% of 42 decks -18% synergy
Haunted Ridge
12% of 41 decks -8% synergy
Dismal Backwater
12% of 42 decks +5% synergy
Fabled Passage
12% of 42 decks +4% synergy
Stormcarved Coast
10% of 41 decks -13% synergy