Mairsil, the Pretender + Ventifact Bottle + Magistrate's Scepter + Horseshoe Crab
Mairsil, the Pretender
Ventifact Bottle
Magistrate's Scepter
Horseshoe Crab
Requires
Mairsil, the Pretender must be on the battlefield.
Ventifact Bottle must be in exile.
Magistrate's Scepter must be in exile.
Horseshoe Crab must be in exile.
Mairsil does not have summoning sickness.
Mana needed: 
each turn
each turn
Steps
- Activate Mairsil using Ventifact Bottle's ability by paying and tapping it, putting three +1/+1 counters on Mairsil.
- Activate Mairsil using Horseshoe Crab's ability by paying , untapping itself.
- Activate Mairsil using Magistrate's Scepter's last ability by tapping it, gaining an extra turn after this one.
- Move to your next turn.
- Repeat.
Results
Infinite turns.
Mairsil, the Pretender
1.33% of 1583 decks
21 decks
High Synergy Cards
Aetherling
90% of 21 decks
+90% synergy
Quicksilver Elemental
86% of 21 decks
+85% synergy
Endling
86% of 21 decks
+85% synergy
Asmodeus the Archfiend
80% of 20 decks
+79% synergy
Torchling
76% of 21 decks
+76% synergy
Arcanis the Omnipotent
71% of 21 decks
+70% synergy
Soliton
67% of 21 decks
+66% synergy
Staff of Domination
67% of 21 decks
+66% synergy
Nevinyrral's Disk
67% of 21 decks
+65% synergy
Pili-Pala
62% of 21 decks
+61% synergy
Top Cards
Hateflayer
62% of 21 decks
+61% synergy
Gilded Lotus
62% of 21 decks
+58% synergy
Ghostly Flicker
62% of 21 decks
+55% synergy
Anger
62% of 21 decks
+52% synergy
Oriq Loremage
60% of 20 decks
+59% synergy
Tree of Perdition
57% of 21 decks
+57% synergy
Blood Vassal
52% of 21 decks
+52% synergy
Sage of Hours
52% of 21 decks
+52% synergy
Anthroplasm
52% of 21 decks
+52% synergy
Spikeshot Elder
52% of 21 decks
+52% synergy
Creatures
Triskelion
52% of 21 decks
+52% synergy
Pack Rat
52% of 21 decks
+51% synergy
Morphling
48% of 21 decks
+47% synergy
Cavern Harpy
48% of 21 decks
+47% synergy
Amaranthine Wall
43% of 21 decks
+43% synergy
Shauku, Endbringer
43% of 21 decks
+43% synergy
Goro-Goro, Disciple of Ryusei
40% of 20 decks
+38% synergy
Cephalid Inkshrouder
38% of 21 decks
+38% synergy
Blood Pet
38% of 21 decks
+38% synergy
Avatar of Woe
38% of 21 decks
+38% synergy
Jace's Archivist
38% of 21 decks
+31% synergy
Ovinomancer
33% of 21 decks
+33% synergy
Mirror-Mad Phantasm
33% of 21 decks
+33% synergy
Deathbringer Thoctar
33% of 21 decks
+33% synergy
Blighted Bat
29% of 21 decks
+28% synergy
Grinning Ignus
29% of 21 decks
+28% synergy
Argent Sphinx
29% of 21 decks
+28% synergy
Walking Ballista
29% of 21 decks
+28% synergy
Deadeye Navigator
29% of 21 decks
+27% synergy
Argivian Avenger
25% of 12 decks
+25% synergy
Farmstead Gleaner
24% of 21 decks
+24% synergy
Knacksaw Clique
24% of 21 decks
+24% synergy
Skyship Stalker
24% of 21 decks
+24% synergy
Cinderhaze Wretch
24% of 21 decks
+24% synergy
Thassa, Deep-Dwelling
24% of 21 decks
+20% synergy
Arco-Flagellant
23% of 13 decks
+23% synergy
Patron of the Moon
19% of 21 decks
+19% synergy
Magus of the Bazaar
19% of 21 decks
+19% synergy
Crystalline Crawler
19% of 21 decks
+19% synergy
Eater of the Dead
19% of 21 decks
+19% synergy
Minion of Leshrac
19% of 21 decks
+19% synergy
Mercurial Chemister
19% of 21 decks
+19% synergy
Duskmantle Guildmage
19% of 21 decks
+18% synergy
Doom Whisperer
19% of 21 decks
+18% synergy
Spark Double
19% of 21 decks
+10% synergy
Displacer Kitten
15% of 20 decks
+11% synergy
Lunar Avenger
14% of 21 decks
+14% synergy
Triskelavus
14% of 21 decks
+14% synergy
Leech Bonder
14% of 21 decks
+14% synergy
Myr Propagator
14% of 21 decks
+14% synergy
Visara the Dreadful
14% of 21 decks
+14% synergy
Grand Architect
14% of 21 decks
+14% synergy
Skirge Familiar
14% of 21 decks
+14% synergy
Thassa's Oracle
14% of 21 decks
+6% synergy
Instants
Frantic Search
52% of 21 decks
+38% synergy
Blur
50% of 20 decks
+49% synergy
Essence Flux
38% of 21 decks
+35% synergy
Planar Incision
35% of 20 decks
+33% synergy
Fact or Fiction
33% of 21 decks
+21% synergy
Counterspell
33% of 21 decks
-11% synergy
Teferi's Time Twist
29% of 21 decks
+27% synergy
Izzet Charm
29% of 21 decks
+26% synergy
Negate
29% of 21 decks
+5% synergy
Hostile Negotiations
25% of 12 decks
+24% synergy
Entomb
24% of 21 decks
+17% synergy
Thrill of Possibility
24% of 21 decks
+16% synergy
Thirst for Knowledge
19% of 21 decks
+16% synergy
Arcane Denial
19% of 21 decks
-9% synergy
Forbidden Alchemy
14% of 21 decks
+12% synergy
Dispel
14% of 21 decks
+10% synergy
Bedevil
14% of 21 decks
-8% synergy
Terminate
14% of 21 decks
-14% synergy
Chaos Warp
14% of 21 decks
-27% synergy
Sorceries
Faithless Looting
48% of 21 decks
+28% synergy
Unmarked Grave
35% of 20 decks
+33% synergy
Buried Alive
33% of 21 decks
+29% synergy
Irenicus's Vile Duplication
25% of 20 decks
+22% synergy
Final Parting
24% of 21 decks
+23% synergy
Cathartic Reunion
24% of 21 decks
+22% synergy
Blasphemous Act
24% of 21 decks
-25% synergy
Consuming Tide
15% of 20 decks
+14% synergy
Tormenting Voice
14% of 21 decks
+13% synergy
Fabricate
14% of 21 decks
+11% synergy
Diabolic Tutor
14% of 21 decks
+9% synergy
Windfall
14% of 21 decks
-10% synergy
Demonic Tutor
14% of 21 decks
-10% synergy
Feed the Swarm
14% of 21 decks
-22% synergy
Utility Artifacts
Pendant of Prosperity
48% of 21 decks
+47% synergy
Conjurer's Closet
38% of 21 decks
+35% synergy
Battlemage's Bracers
30% of 20 decks
+30% synergy
Encroaching Mycosynth
30% of 10 decks
+29% synergy
Illusionist's Bracers
29% of 21 decks
+28% synergy
Swiftfoot Boots
29% of 21 decks
+3% synergy
Heartstone
24% of 21 decks
+24% synergy
Lithoform Engine
24% of 21 decks
+19% synergy
Titan Forge
19% of 21 decks
+19% synergy
Lux Cannon
19% of 21 decks
+19% synergy
Thousand-Year Elixir
19% of 21 decks
+18% synergy
Rings of Brighthearth
19% of 21 decks
+18% synergy
Mindcrank
19% of 21 decks
+17% synergy
Chimeric Mass
14% of 21 decks
+14% synergy
Otherworld Atlas
14% of 21 decks
+14% synergy
Crystal Shard
14% of 21 decks
+13% synergy
Mirage Mirror
14% of 21 decks
+13% synergy
Trading Post
14% of 21 decks
+12% synergy
Lightning Greaves
14% of 21 decks
-15% synergy
Enchantments
Sneak Attack
24% of 21 decks
+18% synergy
Freed from the Real
19% of 21 decks
+19% synergy
Training Grounds
19% of 21 decks
+18% synergy
Utility Lands
Riptide Laboratory
38% of 21 decks
+34% synergy
Sanctum of Eternity
19% of 21 decks
+19% synergy
Command Beacon
19% of 21 decks
+14% synergy
Minamo, School at Water's Edge
14% of 21 decks
+12% synergy
Vault of Whispers
14% of 21 decks
+8% synergy
Great Furnace
14% of 21 decks
+8% synergy
Seat of the Synod
14% of 21 decks
+8% synergy
Bojuka Bog
14% of 21 decks
-11% synergy
Reliquary Tower
14% of 21 decks
-20% synergy
Mana Artifacts
Sol Ring
67% of 21 decks
-24% synergy
Arcane Signet
62% of 21 decks
-26% synergy
Basalt Monolith
43% of 21 decks
+40% synergy
Coveted Jewel
33% of 21 decks
+32% synergy
Dimir Signet
33% of 21 decks
-11% synergy
Empowered Autogenerator
29% of 21 decks
+28% synergy
Rakdos Signet
29% of 21 decks
-14% synergy
Talisman of Indulgence
24% of 21 decks
-16% synergy
Izzet Signet
24% of 21 decks
-16% synergy
Talisman of Creativity
24% of 21 decks
-21% synergy
Talisman of Dominance
24% of 21 decks
-23% synergy
Patriar's Seal
20% of 20 decks
+19% synergy
Fellwar Stone
19% of 21 decks
-16% synergy
Gemstone Array
14% of 21 decks
+14% synergy
Coalition Relic
14% of 21 decks
+14% synergy
Everflowing Chalice
14% of 21 decks
+11% synergy
Thran Dynamo
14% of 21 decks
+8% synergy
Lands
Command Tower
81% of 21 decks
-11% synergy
Crumbling Necropolis
67% of 21 decks
+8% synergy
Exotic Orchard
48% of 21 decks
-10% synergy
Terramorphic Expanse
38% of 21 decks
+14% synergy
Evolving Wilds
38% of 21 decks
+11% synergy
Maestros Theater
35% of 20 decks
+21% synergy
Sunken Hollow
29% of 21 decks
-13% synergy
Luxury Suite
24% of 21 decks
-11% synergy
Smoldering Marsh
24% of 21 decks
-15% synergy
Temple of Epiphany
19% of 21 decks
+2% synergy
Choked Estuary
19% of 21 decks
+1% synergy
Path of Ancestry
19% of 21 decks
-13% synergy
Drowned Catacomb
19% of 21 decks
-20% synergy
Training Center
15% of 20 decks
-20% synergy
Xander's Lounge
15% of 20 decks
-29% synergy
Grixis Panorama
14% of 21 decks
+8% synergy
Temple of Malice
14% of 21 decks
+0% synergy
Rakdos Carnarium
14% of 21 decks
-0% synergy
Izzet Boilerworks
14% of 21 decks
-1% synergy
Temple of Deceit
14% of 21 decks
-1% synergy
Foreboding Ruins
14% of 21 decks
-6% synergy
Sulfurous Springs
14% of 21 decks
-10% synergy
Shivan Reef
14% of 21 decks
-14% synergy
Morphic Pool
14% of 21 decks
-20% synergy
Sulfur Falls
14% of 21 decks
-28% synergy
Watery Grave
14% of 21 decks
-31% synergy