Mairsil, the Pretender + Cinderhaze Wretch + Endling + Phyrexian Altar

Mairsil, the Pretender
Cinderhaze Wretch
Endling
Phyrexian Altar

Requires
Mairsil, the Pretender must be on the battlefield. Cinderhaze Wretch must be in exile. Endling must be in exile. Phyrexian Altar must be on the battlefield, or in exile. Cinderhaze Wretch and Endling each have a cage counter on them. Phyrexian Altar on the battlefield or in exile with a cage counter on it. Mana needed:
Steps
  1. Activate Mairsil using Endling's third ability by paying , gaining Mairsil undying.
  2. Activate Mairsil using Phyrexian Altar's ability by sacrificing Mairsil, adding .
  3. Mairsil's undying ability triggers, returning it to the battlefield.
  4. Activate Mairsil using Cinderhaze Wretch's ability, putting -1/-1 on itself.
  5. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Mairsil, the Pretender
0.84% of 1552 decks 13 decks
High Synergy Cards
Aetherling
100% of 13 decks +99% synergy
Morphling
85% of 13 decks +84% synergy
Staff of Domination
85% of 13 decks +84% synergy
Nevinyrral's Disk
85% of 13 decks +83% synergy
Unmarked Grave
85% of 13 decks +83% synergy
Entomb
85% of 13 decks +78% synergy
Blood Vassal
77% of 13 decks +77% synergy
Horseshoe Crab
77% of 13 decks +77% synergy
Quicksilver Elemental
77% of 13 decks +76% synergy
Walking Ballista
77% of 13 decks +76% synergy
Top Cards
Anger
85% of 13 decks +75% synergy
Arcanis the Omnipotent
77% of 13 decks +75% synergy
Basalt Monolith
77% of 13 decks +74% synergy
Gilded Lotus
77% of 13 decks +72% synergy
Buried Alive
69% of 13 decks +65% synergy
Sage of Hours
62% of 13 decks +61% synergy
Anthroplasm
62% of 13 decks +61% synergy
Pili-Pala
62% of 13 decks +61% synergy
Hateflayer
62% of 13 decks +61% synergy
Cavern Harpy
62% of 13 decks +61% synergy
Creatures
Torchling
62% of 13 decks +61% synergy
Tree of Perdition
62% of 13 decks +61% synergy
Triskelion
54% of 13 decks +53% synergy
Asmodeus the Archfiend
46% of 13 decks +46% synergy
Oriq Loremage
46% of 13 decks +45% synergy
Thassa, Deep-Dwelling
46% of 13 decks +43% synergy
Spark Double
46% of 13 decks +37% synergy
Spikeshot Elder
38% of 13 decks +38% synergy
Ovinomancer
38% of 13 decks +38% synergy
Mirror-Mad Phantasm
38% of 13 decks +38% synergy
Cephalid Inkshrouder
38% of 13 decks +38% synergy
Blood Pet
38% of 13 decks +38% synergy
Pack Rat
38% of 13 decks +37% synergy
Displacer Kitten
38% of 13 decks +34% synergy
Crystalline Crawler
31% of 13 decks +31% synergy
Necrotic Ooze
31% of 13 decks +31% synergy
Doom Whisperer
31% of 13 decks +29% synergy
Thassa's Oracle
31% of 13 decks +22% synergy
Phyrexian Devourer
23% of 13 decks +23% synergy
Farmstead Gleaner
23% of 13 decks +23% synergy
Grand Architect
23% of 13 decks +23% synergy
Skyship Stalker
23% of 13 decks +23% synergy
Eater of the Dead
23% of 13 decks +23% synergy
Memnarch
23% of 13 decks +23% synergy
Avatar of Woe
23% of 13 decks +23% synergy
Deathbringer Thoctar
23% of 13 decks +23% synergy
Duskmantle Guildmage
23% of 13 decks +22% synergy
Geth, Lord of the Vault
23% of 13 decks +22% synergy
Deadeye Navigator
23% of 13 decks +21% synergy
Laboratory Maniac
23% of 13 decks +21% synergy
Jace's Archivist
23% of 13 decks +16% synergy
Instants
Vampiric Tutor
62% of 13 decks +43% synergy
Cyclonic Rift
54% of 13 decks +25% synergy
Mana Drain
46% of 13 decks +30% synergy
Lim-Dûl's Vault
38% of 13 decks +35% synergy
Ghostly Flicker
38% of 13 decks +32% synergy
Arcane Denial
38% of 13 decks +11% synergy
Counterspell
38% of 13 decks -6% synergy
Essence Flux
31% of 13 decks +27% synergy
Frantic Search
31% of 13 decks +16% synergy
Mystical Tutor
31% of 13 decks +15% synergy
Intuition
23% of 13 decks +21% synergy
An Offer You Can't Refuse
23% of 13 decks +2% synergy
Sorceries
Demonic Tutor
69% of 13 decks +45% synergy
Gamble
62% of 13 decks +52% synergy
Reckless Handling
50% of 6 decks +49% synergy
Windfall
46% of 13 decks +22% synergy
Faithless Looting
38% of 13 decks +18% synergy
Grim Tutor
31% of 13 decks +26% synergy
Toxic Deluge
31% of 13 decks +11% synergy
Consuming Tide
23% of 13 decks +23% synergy
Imperial Seal
23% of 13 decks +16% synergy
Reanimate
23% of 13 decks +3% synergy
Feed the Swarm
23% of 13 decks -13% synergy
Blasphemous Act
23% of 13 decks -26% synergy
Utility Artifacts
Cauldron of Souls
46% of 13 decks +46% synergy
Thousand-Year Elixir
46% of 13 decks +45% synergy
Conjurer's Closet
46% of 13 decks +43% synergy
Lightning Greaves
46% of 13 decks +16% synergy
Pendant of Prosperity
38% of 13 decks +38% synergy
Illusionist's Bracers
38% of 13 decks +38% synergy
Swiftfoot Boots
38% of 13 decks +12% synergy
Mirage Mirror
31% of 13 decks +29% synergy
Helm of the Host
31% of 13 decks +27% synergy
Mindcrank
23% of 13 decks +21% synergy
Sensei's Divining Top
23% of 13 decks +18% synergy
Enchantments
Candlekeep Sage
23% of 13 decks +23% synergy
Training Grounds
23% of 13 decks +22% synergy
Propaganda
23% of 13 decks +11% synergy
Rhystic Study
23% of 13 decks -4% synergy
Planeswalkers
Geyadrone Dihada
23% of 13 decks +19% synergy
Utility Lands
Riptide Laboratory
62% of 13 decks +58% synergy
Command Beacon
62% of 13 decks +57% synergy
Otawara, Soaring City
54% of 13 decks +39% synergy
Ancient Tomb
46% of 13 decks +33% synergy
Reliquary Tower
38% of 13 decks +4% synergy
Sanctum of Eternity
31% of 13 decks +30% synergy
Minamo, School at Water's Edge
31% of 13 decks +28% synergy
Temple of the False God
31% of 13 decks +21% synergy
Urborg, Tomb of Yawgmoth
31% of 13 decks +15% synergy
Mana Artifacts
Arcane Signet
69% of 13 decks -19% synergy
Sol Ring
69% of 13 decks -22% synergy
Chromatic Orrery
31% of 13 decks +30% synergy
Izzet Signet
31% of 13 decks -10% synergy
Prismatic Geoscope
23% of 13 decks +23% synergy
Mox Amber
23% of 13 decks +19% synergy
Mana Crypt
23% of 13 decks +11% synergy
Fellwar Stone
23% of 13 decks -13% synergy
Talisman of Indulgence
23% of 13 decks -17% synergy
Rakdos Signet
23% of 13 decks -20% synergy
Dimir Signet
23% of 13 decks -21% synergy
Talisman of Creativity
23% of 13 decks -22% synergy
Talisman of Dominance
23% of 13 decks -24% synergy
Lands
Scalding Tarn
92% of 13 decks +61% synergy
Xander's Lounge
92% of 13 decks +48% synergy
Command Tower
92% of 13 decks +0% synergy
Polluted Delta
85% of 13 decks +54% synergy
Bloodstained Mire
85% of 13 decks +54% synergy
Blood Crypt
85% of 13 decks +41% synergy
Steam Vents
85% of 13 decks +40% synergy
Watery Grave
85% of 13 decks +39% synergy
Training Center
69% of 13 decks +34% synergy
Luxury Suite
62% of 13 decks +27% synergy
Morphic Pool
62% of 13 decks +27% synergy
Mana Confluence
54% of 13 decks +42% synergy
City of Brass
54% of 13 decks +40% synergy
Exotic Orchard
46% of 13 decks -11% synergy
Plaza of Heroes
42% of 12 decks +40% synergy
Flooded Strand
38% of 13 decks +29% synergy
Misty Rainforest
38% of 13 decks +28% synergy
Marsh Flats
38% of 13 decks +28% synergy
Volcanic Island
38% of 13 decks +24% synergy
Underground Sea
38% of 13 decks +24% synergy
Badlands
38% of 13 decks +24% synergy
Haunted Ridge
38% of 13 decks +18% synergy
Stormcarved Coast
38% of 13 decks +16% synergy
Verdant Catacombs
31% of 13 decks +21% synergy
Underground River
31% of 13 decks +6% synergy
Shipwreck Marsh
31% of 13 decks +6% synergy
Shivan Reef
31% of 13 decks +3% synergy
Spirebluff Canal
23% of 13 decks +20% synergy
Blackcleave Cliffs
23% of 13 decks +19% synergy
Darkslick Shores
23% of 13 decks +19% synergy
Cavern of Souls
23% of 13 decks +17% synergy
Wooded Foothills
23% of 13 decks +15% synergy
Fabled Passage
23% of 13 decks +15% synergy
Arid Mesa
23% of 13 decks +13% synergy
Reflecting Pool
23% of 13 decks +13% synergy
Path of Ancestry
23% of 13 decks -9% synergy
Drowned Catacomb
23% of 13 decks -16% synergy
Dragonskull Summit
23% of 13 decks -18% synergy
Sulfur Falls
23% of 13 decks -19% synergy
Crumbling Necropolis
23% of 13 decks -36% synergy