Phyrexian Altar + Undying Malice + Repository Skaab + Necroduality

Phyrexian Altar
Undying Malice
Repository Skaab
Necroduality

Requires
Phyrexian Altar must be on the battlefield. Undying Malice must be in hand. Repository Skaab must be on the battlefield. Necroduality must be on the battlefield. Mana needed:
Steps
  1. Cast Undying Malice by paying , targeting Repository Skaab.
  2. Activate Phyrexian Altar by sacrificing Repository Skaab, adding .
  3. When Repository Skaab dies, it triggers, returning it from your graveyard to the battlefield.
  4. When Repository Skaab enters the battlefield, its exploit ability and Necroduality trigger.
  5. Resolve the Necroduality trigger, creating a token copy of it.
  6. When the Repository Skaab token enters the battlefield, its exploit ability triggers; choose not to sacrifice a creature.
  7. Resolve the Repository Skaab trigger from step 4, sacrificing the Repository Skaab token.
  8. Repository Skaab's second ability triggers, returning Undying Malice to your hand from your graveyard.
  9. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite magecraft triggers. Infinite sacrifice triggers. Infinite storm count.

Wilhelt, the Rotcleaver
0.02% of 18970 decks 4 decks
Gisa and Geralf
0.04% of 4645 decks 2 decks
The Master, Transcendent
0.04% of 2569 decks 1 decks
Varina, Lich Queen
0.01% of 7044 decks 1 decks
High Synergy Cards
Rooftop Storm
100% of 8 decks +98% synergy
Gravecrawler
100% of 8 decks +97% synergy
Undead Augur
75% of 8 decks +73% synergy
Diregraf Captain
75% of 8 decks +71% synergy
Midnight Reaper
75% of 8 decks +71% synergy
Carrion Feeder
75% of 8 decks +70% synergy
Archghoul of Thraben
62% of 8 decks +62% synergy
Eaten Alive
62% of 8 decks +62% synergy
Diregraf Colossus
62% of 8 decks +61% synergy
Acererak the Archlich
50% of 8 decks +49% synergy
Top Cards
Vengeful Dead
50% of 8 decks +49% synergy
Cryptbreaker
50% of 8 decks +49% synergy
Zombie Apocalypse
50% of 8 decks +49% synergy
Undead Warchief
50% of 8 decks +49% synergy
Ghoulcaller Gisa
50% of 8 decks +48% synergy
Crowded Crypt
50% of 8 decks +48% synergy
Army of the Damned
50% of 8 decks +48% synergy
Death Baron
50% of 8 decks +48% synergy
Fleshbag Marauder
50% of 8 decks +46% synergy
Ashnod's Altar
50% of 8 decks +42% synergy
Creatures
Harold and Bob, First Numens
100% of 1 decks +99% synergy
Wayward Servant
100% of 1 decks +99% synergy
Roalesk, Apex Hybrid
100% of 1 decks +99% synergy
God-Eternal Oketra
100% of 1 decks +99% synergy
Strong, the Brutish Thespian
100% of 1 decks +99% synergy
The Wise Mothman
100% of 1 decks +99% synergy
Xavier Sal, Infested Captain
100% of 1 decks +99% synergy
Glowing One
100% of 1 decks +98% synergy
Tato Farmer
100% of 1 decks +98% synergy
Ratadrabik of Urborg
100% of 1 decks +97% synergy
Winding Constrictor
100% of 1 decks +96% synergy
Tireless Tracker
100% of 1 decks +95% synergy
Muldrotha, the Gravetide
100% of 1 decks +94% synergy
Accursed Marauder
100% of 2 decks +91% synergy
Birds of Paradise
100% of 1 decks +73% synergy
Gray Merchant of Asphodel
50% of 8 decks +41% synergy
Siege Zombie
38% of 8 decks +37% synergy
Grimgrin, Corpse-Born
38% of 8 decks +36% synergy
Champion of the Perished
38% of 8 decks +36% synergy
Headless Rider
38% of 8 decks +36% synergy
Cemetery Reaper
38% of 8 decks +36% synergy
Mikaeus, the Unhallowed
38% of 8 decks +35% synergy
Pitiless Plunderer
38% of 8 decks +30% synergy
Hancock, Ghoulish Mayor
33% of 3 decks +33% synergy
Jason Bright, Glowing Prophet
33% of 3 decks +33% synergy
Bloatfly Swarm
33% of 3 decks +32% synergy
Feral Ghoul
33% of 3 decks +32% synergy
Infesting Radroach
33% of 3 decks +32% synergy
Vexing Radgull
33% of 3 decks +32% synergy
Mirelurk Queen
33% of 3 decks +32% synergy
Screeching Scorchbeast
33% of 3 decks +32% synergy
Nightkin Ambusher
33% of 3 decks +31% synergy
Raul, Trouble Shooter
33% of 3 decks +31% synergy
Organ Hoarder
25% of 8 decks +25% synergy
Risen Executioner
25% of 8 decks +25% synergy
Unbreathing Horde
25% of 8 decks +25% synergy
Graveborn Muse
25% of 8 decks +25% synergy
Vizier of the Scorpion
25% of 8 decks +24% synergy
Putrid Goblin
25% of 8 decks +24% synergy
Mire Triton
25% of 8 decks +24% synergy
Zombie Master
25% of 8 decks +24% synergy
Relentless Dead
25% of 8 decks +24% synergy
Geralf, Visionary Stitcher
25% of 8 decks +24% synergy
Poppet Stitcher
25% of 8 decks +24% synergy
Undead Butler
25% of 8 decks +24% synergy
Plague Belcher
25% of 8 decks +24% synergy
Tormod, the Desecrator
25% of 8 decks +24% synergy
Overcharged Amalgam
25% of 8 decks +24% synergy
Cleaver Skaab
25% of 8 decks +24% synergy
Wilhelt, the Rotcleaver
25% of 8 decks +23% synergy
Instants
Time to Reflect
100% of 1 decks +100% synergy
Atomize
100% of 1 decks +94% synergy
Despark
100% of 1 decks +84% synergy
Putrefy
100% of 1 decks +84% synergy
Dovin's Veto
100% of 1 decks +81% synergy
Growth Spiral
100% of 1 decks +78% synergy
Anguished Unmaking
100% of 1 decks +76% synergy
Assassin's Trophy
100% of 1 decks +70% synergy
Corrupted Conviction
40% of 5 decks +34% synergy
Flip the Switch
38% of 8 decks +37% synergy
Lazotep Plating
38% of 8 decks +36% synergy
Entomb
38% of 8 decks +30% synergy
Vampiric Tutor
38% of 8 decks +19% synergy
Counterspell
38% of 8 decks -5% synergy
Contaminated Drink
33% of 3 decks +32% synergy
Radstorm
33% of 3 decks +31% synergy
Corpse Cobble
25% of 8 decks +25% synergy
Ephara's Dispersal
25% of 4 decks +25% synergy
Geistwave
25% of 8 decks +25% synergy
Fading Hope
25% of 8 decks +24% synergy
Pile On
25% of 4 decks +24% synergy
Culling the Weak
25% of 8 decks +21% synergy
Go for the Throat
25% of 8 decks +18% synergy
Village Rites
25% of 8 decks +15% synergy
Frantic Search
25% of 8 decks +13% synergy
Swan Song
25% of 8 decks +8% synergy
Dark Ritual
25% of 8 decks +3% synergy
Moment of Truth
17% of 6 decks +16% synergy
Defabricate
17% of 6 decks +16% synergy
Lethal Scheme
14% of 7 decks +13% synergy
An Offer You Can't Refuse
14% of 7 decks -6% synergy
Wretched Confluence
12% of 8 decks +12% synergy
Undermine
12% of 8 decks +12% synergy
Murderous Cut
12% of 8 decks +12% synergy
Sinister Sabotage
12% of 8 decks +12% synergy
Rise of the Dread Marn
12% of 8 decks +12% synergy
Soul Manipulation
12% of 8 decks +11% synergy
Forbidden Alchemy
12% of 8 decks +11% synergy
Perplex
12% of 8 decks +11% synergy
Otherworldly Gaze
12% of 8 decks +11% synergy
Supernatural Stamina
12% of 8 decks +11% synergy
Impulse
12% of 8 decks +11% synergy
Dismember
12% of 8 decks +10% synergy
Soul Shatter
12% of 8 decks +10% synergy
Murder
12% of 8 decks +9% synergy
Tragic Slip
12% of 8 decks +9% synergy
Cabal Ritual
12% of 8 decks +8% synergy
Dig Through Time
12% of 8 decks +7% synergy
Aetherize
12% of 8 decks +7% synergy
Consider
12% of 8 decks +7% synergy
Sorceries
Find // Finality
100% of 1 decks +98% synergy
Casualties of War
100% of 1 decks +95% synergy
Harmonize
100% of 1 decks +91% synergy
Farseek
100% of 1 decks +66% synergy
Rampant Growth
100% of 1 decks +65% synergy
Cultivate
100% of 1 decks +54% synergy
Lively Dirge
50% of 2 decks +48% synergy
Diabolic Intent
50% of 8 decks +41% synergy
Victimize
50% of 8 decks +38% synergy
Empty the Laboratory
38% of 8 decks +37% synergy
Dread Return
38% of 8 decks +32% synergy
Nuclear Fallout
33% of 3 decks +31% synergy
Lich-Knights' Conquest
33% of 3 decks +30% synergy
Beseech the Mirror
33% of 3 decks +29% synergy
Unearth
25% of 8 decks +22% synergy
Distant Melody
25% of 8 decks +20% synergy
Living Death
25% of 8 decks +20% synergy
Buried Alive
25% of 8 decks +19% synergy
Windfall
25% of 8 decks +12% synergy
Toxic Deluge
25% of 8 decks +8% synergy
Shrouded Lore
12% of 8 decks +12% synergy
Never // Return
12% of 8 decks +12% synergy
Plague of Vermin
12% of 8 decks +12% synergy
Call of the Death-Dweller
12% of 8 decks +12% synergy
Ghouls' Night Out
12% of 8 decks +12% synergy
Enter the God-Eternals
12% of 8 decks +12% synergy
Dark Salvation
12% of 8 decks +12% synergy
Necrotic Hex
12% of 8 decks +12% synergy
Sleight of Hand
12% of 8 decks +12% synergy
Dread Summons
12% of 8 decks +12% synergy
Duress
12% of 8 decks +11% synergy
Stitch Together
12% of 8 decks +11% synergy
Extract from Darkness
12% of 8 decks +10% synergy
Patriarch's Bidding
12% of 8 decks +9% synergy
In Garruk's Wake
12% of 8 decks +9% synergy
Treasure Cruise
12% of 8 decks +7% synergy
Diabolic Tutor
12% of 8 decks +6% synergy
Damnation
12% of 8 decks +4% synergy
Night's Whisper
12% of 8 decks +3% synergy
Sign in Blood
12% of 8 decks +3% synergy
Reanimate
12% of 8 decks -3% synergy
Feed the Swarm
12% of 8 decks -6% synergy
Demonic Tutor
12% of 8 decks -10% synergy
Utility Artifacts
Altar of Dementia
38% of 8 decks +35% synergy
Nuka-Nuke Launcher
33% of 3 decks +33% synergy
Sting, the Glinting Dagger
33% of 3 decks +32% synergy
Urza's Incubator
25% of 8 decks +22% synergy
Transmogrant's Crown
17% of 6 decks +16% synergy
Skull of Orm
12% of 8 decks +12% synergy
Grimoire of the Dead
12% of 8 decks +12% synergy
Cauldron of Souls
12% of 8 decks +12% synergy
Pyre of Heroes
12% of 8 decks +12% synergy
Font of Mythos
12% of 8 decks +12% synergy
Altar of the Brood
12% of 8 decks +11% synergy
Contagion Clasp
12% of 8 decks +11% synergy
Bontu's Monument
12% of 8 decks +10% synergy
Expedition Map
12% of 8 decks +9% synergy
Wayfarer's Bauble
12% of 8 decks +2% synergy
Enchantments
Vault 87: Forced Evolution
100% of 1 decks +99% synergy
Guardian Project
100% of 1 decks +91% synergy
Vault 12: The Necropolis
33% of 3 decks +32% synergy
Wind Zendikon
25% of 8 decks +25% synergy
Necrosynthesis
25% of 8 decks +25% synergy
Endless Ranks of the Dead
25% of 8 decks +23% synergy
Intruder Alarm
25% of 8 decks +23% synergy
Freed from the Real
25% of 8 decks +23% synergy
The Meathook Massacre
25% of 8 decks +20% synergy
Phyrexian Arena
25% of 8 decks +10% synergy
Tamiyo's Compleation
12% of 8 decks +12% synergy
Graf Harvest
12% of 8 decks +12% synergy
Feast of Sanity
12% of 8 decks +12% synergy
Faith of the Devoted
12% of 8 decks +12% synergy
Ghoulish Procession
12% of 8 decks +12% synergy
The Trickster-God's Heist
12% of 8 decks +12% synergy
Secrets of the Dead
12% of 8 decks +12% synergy
Curse of the Restless Dead
12% of 8 decks +12% synergy
Liliana's Mastery
12% of 8 decks +12% synergy
Copy Enchantment
12% of 8 decks +11% synergy
Oversold Cemetery
12% of 8 decks +11% synergy
Vampiric Rites
12% of 8 decks +10% synergy
Dreadhorde Invasion
12% of 8 decks +10% synergy
Inexorable Tide
12% of 8 decks +10% synergy
Necromancy
12% of 8 decks +9% synergy
Dictate of Erebos
12% of 8 decks +9% synergy
Grave Pact
12% of 8 decks +8% synergy
Black Market
12% of 8 decks +8% synergy
Reflections of Littjara
12% of 8 decks +7% synergy
Bastion of Remembrance
12% of 8 decks +6% synergy
Animate Dead
12% of 8 decks +3% synergy
Mystic Remora
12% of 8 decks -5% synergy
Planeswalkers
Liliana, Untouched by Death
38% of 8 decks +37% synergy
Liliana of the Dark Realms
25% of 8 decks +24% synergy
Liliana, Dreadhorde General
25% of 8 decks +21% synergy
Liliana, the Last Hope
12% of 8 decks +12% synergy
Liliana, Death's Majesty
12% of 8 decks +11% synergy
Ashiok, Dream Render
12% of 8 decks +8% synergy
Utility Lands
Bojuka Bog
62% of 8 decks +32% synergy
Mortuary Mire
50% of 8 decks +45% synergy
Urborg, Tomb of Yawgmoth
50% of 8 decks +40% synergy
Cabal Coffers
50% of 8 decks +39% synergy
Cabal Stronghold
38% of 8 decks +34% synergy
Temple of the False God
38% of 8 decks +28% synergy
Mariposa Military Base
33% of 3 decks +33% synergy
Unholy Grotto
25% of 8 decks +24% synergy
Crypt of Agadeem
25% of 8 decks +23% synergy
Witch's Cottage
25% of 8 decks +21% synergy
Phyrexian Tower
25% of 8 decks +17% synergy
Blast Zone
12% of 8 decks +11% synergy
Nesting Grounds
12% of 8 decks +11% synergy
Riptide Laboratory
12% of 8 decks +10% synergy
Command Beacon
12% of 8 decks +8% synergy
Academy Ruins
12% of 8 decks +8% synergy
Nykthos, Shrine to Nyx
12% of 8 decks +7% synergy
Takenuma, Abandoned Mire
12% of 8 decks +2% synergy
Mystic Sanctuary
12% of 8 decks +0% synergy
Mana Artifacts
Talisman of Resilience
100% of 1 decks +88% synergy
Talisman of Curiosity
100% of 1 decks +88% synergy
Azorius Signet
100% of 1 decks +74% synergy
Orzhov Signet
100% of 1 decks +73% synergy
Sol Ring
100% of 8 decks +16% synergy
Arcane Signet
88% of 8 decks +16% synergy
Talisman of Dominance
62% of 8 decks +31% synergy
Dimir Signet
38% of 8 decks +8% synergy
Commander's Sphere
25% of 8 decks +10% synergy
Relic of Legends
14% of 7 decks +12% synergy
Darksteel Ingot
12% of 8 decks +11% synergy
Pristine Talisman
12% of 8 decks +11% synergy
Heraldic Banner
12% of 8 decks +11% synergy
Sky Diamond
12% of 8 decks +7% synergy
Charcoal Diamond
12% of 8 decks +7% synergy
Thought Vessel
12% of 8 decks -4% synergy
Mind Stone
12% of 8 decks -5% synergy
Lands
Nimbus Maze
100% of 1 decks +95% synergy
Undercity Sewers
100% of 3 decks +86% synergy
Hedge Maze
100% of 1 decks +86% synergy
Port Town
100% of 1 decks +84% synergy
Deserted Beach
100% of 1 decks +84% synergy
Temple of Malady
100% of 1 decks +84% synergy
Temple of Mystery
100% of 1 decks +83% synergy
Dreamroot Cascade
100% of 1 decks +81% synergy
Hinterland Harbor
100% of 1 decks +73% synergy
Woodland Cemetery
100% of 1 decks +72% synergy
Sunken Hollow
100% of 8 decks +65% synergy
Command Tower
100% of 8 decks +26% synergy
Shipwreck Marsh
75% of 8 decks +56% synergy
Tainted Isle
62% of 8 decks +52% synergy
Temple of Deceit
62% of 8 decks +46% synergy
Choked Estuary
62% of 8 decks +46% synergy
Path of Ancestry
62% of 8 decks +41% synergy
Demolition Field
50% of 6 decks +47% synergy
Darkwater Catacombs
50% of 8 decks +35% synergy
Dimir Aqueduct
50% of 8 decks +33% synergy
Exotic Orchard
50% of 8 decks +14% synergy
Watery Grave
50% of 8 decks +9% synergy
Unclaimed Territory
38% of 8 decks +33% synergy
Polluted Delta
38% of 8 decks +26% synergy
Myriad Landscape
38% of 8 decks +18% synergy
Secluded Courtyard
25% of 8 decks +20% synergy
Darkslick Shores
25% of 8 decks +20% synergy
Fetid Pools
25% of 8 decks +20% synergy
Fabled Passage
25% of 8 decks +16% synergy
Underground River
25% of 8 decks +6% synergy
Evolving Wilds
25% of 8 decks +4% synergy
Drowned Catacomb
25% of 8 decks -0% synergy
Salt Marsh
12% of 8 decks +12% synergy
Submerged Boneyard
12% of 8 decks +11% synergy
Jwar Isle Refuge
12% of 8 decks +10% synergy
Port of Karfell
12% of 8 decks +10% synergy
River of Tears
12% of 8 decks +9% synergy
Sunken Ruins
12% of 8 decks +8% synergy
Ash Barrens
12% of 8 decks +8% synergy
Dismal Backwater
12% of 8 decks +6% synergy
Misty Rainforest
12% of 8 decks +1% synergy
Morphic Pool
12% of 8 decks -14% synergy