Mairsil, the Pretender + Endling + Blood Vassal + Walking Ballista

Mairsil, the Pretender
Endling
Blood Vassal
Walking Ballista

Requires
Mairsil, the Pretender must be on the battlefield. Endling must be in exile. Blood Vassal must be in exile. Walking Ballista must be in exile. Mana needed:
Steps
  1. Activate Mairsil using Endling's third ability by paying , gaining Mairsil undying.
  2. Activate Mairsil using Blood Vassal's ability by sacrificing it, adding .
  3. Mairsil undying triggers, returning it to the battlefield with a +1/+1 counter.
  4. Activate Mairsil using Walking Ballista's last ability by removing a +1/+1 counter, 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
6.70% of 1568 decks 105 decks
New Cards
Marvin, Murderous Mimic
86% of 14 decks +84% synergy
Withering Torment
43% of 14 decks +9% synergy
Gloomlake Verge
21% of 14 decks +5% synergy
Blazemire Verge
21% of 14 decks +4% synergy
High Synergy Cards
Aetherling
96% of 105 decks +96% synergy
Quicksilver Elemental
87% of 105 decks +86% synergy
Nevinyrral's Disk
86% of 105 decks +84% synergy
Arcanis the Omnipotent
84% of 105 decks +82% synergy
Buried Alive
83% of 105 decks +79% synergy
Anger
89% of 105 decks +79% synergy
Entomb
81% of 105 decks +74% synergy
Asmodeus the Archfiend
73% of 105 decks +73% synergy
Staff of Domination
71% of 105 decks +71% synergy
Oriq Loremage
65% of 105 decks +64% synergy
Top Cards
Faithless Looting
81% of 105 decks +61% synergy
Gilded Lotus
80% of 105 decks +76% synergy
Frantic Search
70% of 105 decks +56% synergy
Morphling
64% of 105 decks +63% synergy
Torchling
64% of 105 decks +63% synergy
Cavern Harpy
61% of 105 decks +60% synergy
Thousand-Year Elixir
58% of 105 decks +57% synergy
Tree of Perdition
57% of 105 decks +57% synergy
Hateflayer
56% of 105 decks +56% synergy
Unmarked Grave
55% of 105 decks +53% synergy
Creatures
Horseshoe Crab
53% of 105 decks +53% synergy
Ulamog's Dreadsire
50% of 22 decks +50% synergy
Jace's Archivist
42% of 105 decks +35% synergy
Triskelion
41% of 105 decks +41% synergy
Anthroplasm
40% of 105 decks +40% synergy
Crystalline Crawler
40% of 105 decks +40% synergy
Blood Pet
40% of 105 decks +40% synergy
Pack Rat
38% of 105 decks +36% synergy
Sage of Hours
37% of 105 decks +37% synergy
Mirror-Mad Phantasm
37% of 105 decks +37% synergy
Eater of the Dead
36% of 105 decks +36% synergy
Shauku, Endbringer
35% of 105 decks +35% synergy
Cinderhaze Wretch
34% of 105 decks +34% synergy
Pili-Pala
32% of 105 decks +32% synergy
Thassa's Oracle
31% of 105 decks +23% synergy
Spikeshot Elder
29% of 105 decks +28% synergy
Spark Double
29% of 105 decks +20% synergy
Minion of Leshrac
28% of 105 decks +27% synergy
Thassa, Deep-Dwelling
27% of 105 decks +23% synergy
Displacer Kitten
25% of 96 decks +21% synergy
Cephalid Inkshrouder
23% of 105 decks +23% synergy
Ovinomancer
21% of 105 decks +21% synergy
Necrotic Ooze
20% of 105 decks +20% synergy
Deadeye Navigator
19% of 105 decks +17% synergy
Blighted Bat
18% of 105 decks +18% synergy
Likeness Looter
17% of 46 decks +15% synergy
Doom Whisperer
16% of 105 decks +15% synergy
Arco-Flagellant
15% of 82 decks +14% synergy
Soliton
14% of 105 decks +14% synergy
Avatar of Woe
14% of 105 decks +14% synergy
Deathbringer Thoctar
14% of 105 decks +14% synergy
Sakashima of a Thousand Faces
14% of 105 decks +11% synergy
Dockside Extortionist
14% of 105 decks -0% synergy
Dralnu, Lich Lord
13% of 105 decks +13% synergy
Skyship Stalker
12% of 105 decks +12% synergy
Chainer, Dementia Master
12% of 105 decks +12% synergy
Azami, Lady of Scrolls
12% of 105 decks +10% synergy
Galecaster Colossus
11% of 105 decks +10% synergy
Goro-Goro, Disciple of Ryusei
11% of 103 decks +9% synergy
Myr Propagator
10% of 105 decks +10% synergy
Amaranthine Wall
10% of 105 decks +10% synergy
Argent Sphinx
10% of 105 decks +10% synergy
Memnarch
10% of 105 decks +10% synergy
Mercurial Chemister
10% of 105 decks +10% synergy
Goblin Engineer
10% of 105 decks +7% synergy
Magus of the Bazaar
9% of 105 decks +8% synergy
Skirge Familiar
9% of 105 decks +8% synergy
Nightscape Familiar
9% of 105 decks -17% synergy
Death Cultist
8% of 105 decks +8% synergy
Dauthi Voidwalker
8% of 105 decks -0% synergy
Instants
Essence Flux
55% of 105 decks +52% synergy
Counterspell
54% of 105 decks +10% synergy
Cyclonic Rift
48% of 105 decks +20% synergy
Vampiric Tutor
38% of 105 decks +19% synergy
Arcane Denial
37% of 105 decks +9% synergy
An Offer You Can't Refuse
35% of 101 decks +13% synergy
Thrill of Possibility
33% of 105 decks +25% synergy
Planar Incision
33% of 103 decks +31% synergy
Swan Song
32% of 105 decks +15% synergy
Ghostly Flicker
30% of 105 decks +24% synergy
Fact or Fiction
30% of 105 decks +19% synergy
Fierce Guardianship
30% of 105 decks +11% synergy
Deflecting Swat
30% of 105 decks +13% synergy
Chaos Warp
30% of 105 decks -11% synergy
Negate
27% of 105 decks +3% synergy
Demand Answers
24% of 42 decks +21% synergy
Mystical Tutor
24% of 105 decks +9% synergy
Mana Drain
23% of 105 decks +7% synergy
Force of Will
19% of 105 decks +8% synergy
Dark Ritual
19% of 105 decks -11% synergy
Terminate
18% of 105 decks -10% synergy
Teferi's Time Twist
17% of 105 decks +15% synergy
Stubborn Denial
16% of 105 decks +15% synergy
Intuition
16% of 105 decks +14% synergy
Forbidden Alchemy
16% of 105 decks +14% synergy
Lim-Dûl's Vault
15% of 105 decks +12% synergy
Deadly Rollick
15% of 105 decks +3% synergy
Hostile Negotiations
15% of 79 decks +14% synergy
Blur
14% of 96 decks +12% synergy
Force of Negation
13% of 105 decks +5% synergy
Thirst for Knowledge
12% of 105 decks +10% synergy
Izzet Charm
12% of 105 decks +10% synergy
Evacuation
11% of 105 decks +8% synergy
Crosis's Charm
11% of 105 decks +7% synergy
Malakir Rebirth
11% of 105 decks +5% synergy
Pact of Negation
11% of 105 decks +3% synergy
Bedevil
11% of 105 decks -10% synergy
Reality Shift
10% of 105 decks +4% synergy
Flusterstorm
10% of 105 decks +3% synergy
Bitter Triumph
10% of 42 decks +5% synergy
Brainstorm
10% of 105 decks -10% synergy
Thirst for Discovery
9% of 104 decks +8% synergy
Thought Scour
9% of 105 decks +6% synergy
Demonic Consultation
9% of 105 decks +1% synergy
Maestros Charm
8% of 101 decks +3% synergy
Consider
8% of 104 decks +2% synergy
Dispel
8% of 105 decks +4% synergy
Pongify
8% of 105 decks +1% synergy
Abrade
8% of 105 decks -1% synergy
Delay
7% of 105 decks +5% synergy
Sorceries
Windfall
54% of 105 decks +30% synergy
Demonic Tutor
50% of 105 decks +27% synergy
Gamble
47% of 105 decks +37% synergy
Blasphemous Act
47% of 105 decks -2% synergy
Toxic Deluge
37% of 105 decks +17% synergy
Careful Study
34% of 105 decks +33% synergy
Lively Dirge
31% of 32 decks +29% synergy
Cathartic Reunion
26% of 105 decks +24% synergy
Feed the Swarm
26% of 105 decks -10% synergy
Vandalblast
23% of 105 decks +5% synergy
Wheel of Fortune
18% of 105 decks +9% synergy
Final Parting
17% of 105 decks +16% synergy
Ransack the Lab
15% of 105 decks +15% synergy
Reckless Handling
15% of 61 decks +14% synergy
Grim Tutor
14% of 105 decks +10% synergy
Damnation
12% of 105 decks +2% synergy
Whispering Madness
11% of 105 decks +4% synergy
Reanimate
11% of 105 decks -9% synergy
Strategic Planning
10% of 105 decks +10% synergy
Tormenting Voice
10% of 105 decks +10% synergy
Imperial Seal
10% of 105 decks +3% synergy
Ponder
8% of 105 decks -3% synergy
Irenicus's Vile Duplication
7% of 96 decks +4% synergy
Lórien Revealed
7% of 57 decks +4% synergy
Notion Rain
7% of 105 decks +6% synergy
Fabricate
7% of 105 decks +3% synergy
Diabolic Tutor
7% of 105 decks +1% synergy
Wheel of Misfortune
7% of 105 decks +1% synergy
By Force
6% of 105 decks +5% synergy
Profane Tutor
6% of 105 decks +0% synergy
Jeska's Will
6% of 105 decks -12% synergy
Utility Artifacts
Pendant of Prosperity
50% of 105 decks +49% synergy
The One Ring
44% of 68 decks +29% synergy
Lightning Greaves
32% of 105 decks +3% synergy
Conjurer's Closet
31% of 105 decks +28% synergy
Swiftfoot Boots
27% of 105 decks +1% synergy
Collector's Vault
22% of 46 decks +21% synergy
Mirage Mirror
18% of 105 decks +17% synergy
Agatha's Soul Cauldron
14% of 49 decks +13% synergy
Cauldron of Souls
12% of 105 decks +12% synergy
Illusionist's Bracers
12% of 105 decks +11% synergy
Crystal Shard
10% of 105 decks +10% synergy
Phyrexian Altar
10% of 105 decks +6% synergy
Rings of Brighthearth
10% of 105 decks +8% synergy
Sensei's Divining Top
9% of 105 decks +4% synergy
Battlemage's Bracers
8% of 105 decks +7% synergy
Helm of the Host
8% of 105 decks +4% synergy
Wishclaw Talisman
8% of 105 decks +0% synergy
Netherborn Altar
7% of 105 decks +6% synergy
Wayfarer's Bauble
7% of 105 decks -11% synergy
Heartstone
6% of 105 decks +6% synergy
Mindcrank
6% of 105 decks +3% synergy
Enchantments
Rhystic Study
47% of 105 decks +20% synergy
Mystic Remora
29% of 105 decks +13% synergy
Candlekeep Sage
22% of 96 decks +22% synergy
Rising of the Day
21% of 61 decks +17% synergy
Training Grounds
18% of 105 decks +17% synergy
Bitter Reunion
11% of 79 decks +11% synergy
Fervor
7% of 105 decks +6% synergy
Sneak Attack
6% of 105 decks -0% synergy
Planeswalkers
Ashiok, Dream Render
12% of 105 decks +10% synergy
Jace, Wielder of Mysteries
8% of 105 decks +6% synergy
Narset, Parter of Veils
8% of 105 decks +3% synergy
Vraska, Betrayal's Sting
6% of 72 decks +4% synergy
Utility Lands
Riptide Laboratory
60% of 105 decks +56% synergy
Minamo, School at Water's Edge
33% of 105 decks +31% synergy
Command Beacon
27% of 105 decks +22% synergy
Otawara, Soaring City
25% of 103 decks +10% synergy
Arena of Glory
24% of 25 decks +19% synergy
Urborg, Tomb of Yawgmoth
21% of 105 decks +5% synergy
Bojuka Bog
21% of 105 decks -4% synergy
Sanctum of Eternity
19% of 105 decks +19% synergy
Flamekin Village
14% of 105 decks +14% synergy
Ancient Tomb
13% of 105 decks -0% synergy
Desolate Lighthouse
12% of 105 decks +5% synergy
Takenuma, Abandoned Mire
12% of 103 decks +5% synergy
Reliquary Tower
11% of 105 decks -23% synergy
Seat of the Synod
10% of 105 decks +5% synergy
Vault of Whispers
10% of 105 decks +4% synergy
Great Furnace
10% of 105 decks +4% synergy
Geier Reach Sanitarium
7% of 105 decks -0% synergy
Hanweir Battlements
6% of 105 decks +5% synergy
Mana Artifacts
Sol Ring
91% of 105 decks +1% synergy
Arcane Signet
90% of 105 decks +2% synergy
Fellwar Stone
58% of 105 decks +23% synergy
Talisman of Creativity
52% of 105 decks +8% synergy
Talisman of Dominance
51% of 105 decks +4% synergy
Dimir Signet
50% of 105 decks +6% synergy
Izzet Signet
48% of 105 decks +8% synergy
Talisman of Indulgence
46% of 105 decks +5% synergy
Rakdos Signet
41% of 105 decks -1% synergy
Relic of Sauron
28% of 57 decks +2% synergy
Basalt Monolith
26% of 105 decks +23% synergy
Coveted Jewel
21% of 105 decks +20% synergy
Lotus Petal
15% of 105 decks +7% synergy
Mind Stone
14% of 105 decks -2% synergy
Mana Vault
12% of 105 decks +3% synergy
Mana Crypt
12% of 105 decks +2% synergy
Commander's Sphere
11% of 105 decks -15% synergy
Skull of Ramos
10% of 105 decks +9% synergy
Chromatic Orrery
10% of 105 decks +9% synergy
Mox Diamond
8% of 105 decks +1% synergy
Chromatic Lantern
8% of 105 decks -11% synergy
Patriar's Seal
7% of 96 decks +7% synergy
Mox Opal
7% of 105 decks -1% synergy
Chrome Mox
7% of 105 decks -2% synergy
Cursed Mirror
6% of 105 decks -0% synergy
Lands
Command Tower
90% of 105 decks -2% synergy
Exotic Orchard
65% of 105 decks +8% synergy
Watery Grave
64% of 105 decks +19% synergy
Xander's Lounge
62% of 101 decks +19% synergy
Blood Crypt
62% of 105 decks +18% synergy
Steam Vents
62% of 105 decks +18% synergy
Training Center
54% of 105 decks +19% synergy
Polluted Delta
53% of 105 decks +23% synergy
Bloodstained Mire
50% of 105 decks +20% synergy
Scalding Tarn
50% of 105 decks +19% synergy
Luxury Suite
47% of 105 decks +12% synergy
Morphic Pool
47% of 105 decks +12% synergy
Thundering Falls
45% of 40 decks +32% synergy
Undercity Sewers
45% of 40 decks +30% synergy
Raucous Theater
42% of 40 decks +29% synergy
Crumbling Necropolis
40% of 105 decks -19% synergy
Sulfur Falls
38% of 105 decks -5% synergy
Drowned Catacomb
34% of 105 decks -5% synergy
City of Brass
32% of 105 decks +19% synergy
Shivan Reef
32% of 105 decks +5% synergy
Sunken Hollow
30% of 105 decks -13% synergy
Underground River
29% of 105 decks +3% synergy
Dragonskull Summit
28% of 105 decks -14% synergy
Smoldering Marsh
25% of 105 decks -14% synergy
Verdant Catacombs
24% of 105 decks +14% synergy
Misty Rainforest
24% of 105 decks +14% synergy
Marsh Flats
24% of 105 decks +14% synergy
Mana Confluence
24% of 105 decks +12% synergy
Sulfurous Springs
23% of 105 decks -2% synergy
Flooded Strand
22% of 105 decks +12% synergy
Evolving Wilds
22% of 105 decks -5% synergy
Badlands
20% of 105 decks +6% synergy
Arid Mesa
19% of 105 decks +9% synergy
Volcanic Island
19% of 105 decks +5% synergy
Underground Sea
18% of 105 decks +4% synergy
Wooded Foothills
17% of 105 decks +9% synergy
Izzet Boilerworks
17% of 105 decks +2% synergy
Dimir Aqueduct
17% of 105 decks +2% synergy
Path of Ancestry
16% of 105 decks -16% synergy
Seething Landscape
16% of 25 decks -16% synergy
Haunted Ridge
15% of 104 decks -5% synergy
Temple of Epiphany
15% of 105 decks -2% synergy
Stormcarved Coast
14% of 104 decks -8% synergy
Shipwreck Marsh
14% of 104 decks -11% synergy
Temple of Deceit
14% of 105 decks -1% synergy
Terramorphic Expanse
14% of 105 decks -9% synergy
Fabled Passage
13% of 105 decks +5% synergy
Rakdos Carnarium
13% of 105 decks -1% synergy
Reflecting Pool
12% of 105 decks +3% synergy
Maestros Theater
12% of 101 decks -2% synergy