Gravespawn Sovereign + Intruder Alarm + Ashnod's Altar

Gravespawn Sovereign
Intruder Alarm
Ashnod's Altar

Requires
Gravespawn Sovereign must be on the battlefield. Intruder Alarm must be on the battlefield. Ashnod's Altar must be on the battlefield. You control at least four other Zombies and an additional nontoken creature.
Steps
  1. Activate Ashnod's Altar by sacrificing a nontoken creature, adding .
  2. Activate Gravespawn Sovereign by tapping five untapped Zombies you control, returning any creature from your graveyard to the battlefield.
  3. The creature enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  4. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite untap of creatures.

Wilhelt, the Rotcleaver
0.07% of 18990 decks 14 decks
The Scarab God
0.04% of 10459 decks 4 decks
Gisa and Geralf
0.08% of 4759 decks 4 decks
Varina, Lich Queen
0.06% of 7100 decks 4 decks
Grimgrin, Corpse-Born
0.09% of 2123 decks 2 decks
Sedris, the Traitor King
0.05% of 1884 decks 1 decks
Morophon, the Boundless
0.01% of 9913 decks 1 decks
Phenax, God of Deception
0.02% of 6386 decks 1 decks
Mairsil, the Pretender
0.06% of 1571 decks 1 decks
Eloise, Nephalia Sleuth
0.07% of 1406 decks 1 decks
Zimone and Dina
0.01% of 7161 decks 1 decks
Kraum, Ludevic's Opus // Tormod, the Desecrator
0.35% of 287 decks 1 decks
Marneus Calgar
0.01% of 10528 decks 1 decks
Narfi, Betrayer King
0.12% of 856 decks 1 decks
Sidisi, Brood Tyrant
0.02% of 6359 decks 1 decks
Thraximundar
0.05% of 1957 decks 1 decks
High Synergy Cards
Gravecrawler
77% of 39 decks +74% synergy
Diregraf Captain
77% of 39 decks +73% synergy
Rooftop Storm
74% of 39 decks +73% synergy
Diregraf Colossus
74% of 39 decks +73% synergy
God-Eternal Oketra
67% of 6 decks +66% synergy
Undead Augur
64% of 39 decks +62% synergy
Cleaver Skaab
62% of 39 decks +60% synergy
Gisa and Geralf
62% of 39 decks +60% synergy
Warren Soultrader
62% of 8 decks +55% synergy
Empty the Laboratory
54% of 39 decks +53% synergy
Top Cards
Gray Merchant of Asphodel
59% of 39 decks +50% synergy
Necroduality
54% of 39 decks +53% synergy
Headless Rider
54% of 39 decks +52% synergy
Wilhelt, the Rotcleaver
54% of 39 decks +52% synergy
Death Baron
54% of 39 decks +52% synergy
Zombie Apocalypse
51% of 39 decks +50% synergy
Mikaeus, the Unhallowed
51% of 39 decks +49% synergy
Midnight Reaper
51% of 39 decks +48% synergy
Phyrexian Altar
51% of 39 decks +47% synergy
Cemetery Reaper
49% of 39 decks +47% synergy
Creatures
Accursed Marauder
50% of 6 decks +41% synergy
Carrion Feeder
49% of 39 decks +44% synergy
Fleshbag Marauder
46% of 39 decks +42% synergy
Cryptbreaker
44% of 39 decks +42% synergy
Ghoulcaller Gisa
44% of 39 decks +42% synergy
Hordewing Skaab
41% of 39 decks +40% synergy
Lord of the Accursed
41% of 39 decks +39% synergy
Champion of the Perished
38% of 39 decks +37% synergy
Havengul Lich
38% of 39 decks +37% synergy
Geralf, Visionary Stitcher
36% of 39 decks +35% synergy
Plague Belcher
33% of 39 decks +32% synergy
Undead Warchief
33% of 39 decks +32% synergy
Gleaming Overseer
33% of 39 decks +31% synergy
Grimgrin, Corpse-Born
31% of 39 decks +30% synergy
Overcharged Amalgam
31% of 39 decks +30% synergy
The Scarab God
31% of 39 decks +29% synergy
Gisa, the Hellraiser
30% of 10 decks +29% synergy
Corpse Augur
28% of 39 decks +28% synergy
Undead Alchemist
28% of 39 decks +28% synergy
Vengeful Dead
28% of 39 decks +27% synergy
Noxious Ghoul
28% of 39 decks +27% synergy
Tomb Tyrant
28% of 39 decks +27% synergy
Sidisi, Undead Vizier
28% of 39 decks +26% synergy
Feral Ghoul
27% of 15 decks +25% synergy
Archghoul of Thraben
26% of 39 decks +25% synergy
Ravenous Rotbelly
26% of 39 decks +25% synergy
Vizier of the Scorpion
23% of 39 decks +23% synergy
Relentless Dead
23% of 39 decks +22% synergy
Forgotten Creation
23% of 39 decks +22% synergy
Lord of the Undead
23% of 39 decks +22% synergy
Murderous Rider
23% of 39 decks +21% synergy
Mirkwood Bats
23% of 26 decks +11% synergy
Eternal Skylord
21% of 39 decks +20% synergy
Liliana's Standard Bearer
21% of 39 decks +20% synergy
Poppet Stitcher
21% of 39 decks +20% synergy
Syr Konrad, the Grim
21% of 39 decks +12% synergy
Rot Hulk
18% of 39 decks +18% synergy
Unbreathing Horde
18% of 39 decks +18% synergy
Graveborn Muse
18% of 39 decks +17% synergy
Lich Lord of Unx
18% of 39 decks +17% synergy
Acererak the Archlich
18% of 39 decks +17% synergy
Vile Entomber
18% of 39 decks +16% synergy
Grave Titan
18% of 39 decks +16% synergy
Drivnod, Carnage Dominus
17% of 29 decks +14% synergy
Noosegraf Mob
15% of 39 decks +15% synergy
Shepherd of Rot
15% of 39 decks +15% synergy
Fell Stinger
15% of 39 decks +14% synergy
Titan of Littjara
14% of 22 decks +12% synergy
Phyrexian Ghoul
13% of 39 decks +13% synergy
Tainted Adversary
13% of 39 decks +12% synergy
Instants
Swords to Plowshares
50% of 6 decks -13% synergy
Counterspell
28% of 39 decks -15% synergy
Dark Ritual
26% of 39 decks +3% synergy
Rise of the Dread Marn
23% of 39 decks +22% synergy
Entomb
23% of 39 decks +16% synergy
Negate
23% of 39 decks +0% synergy
Lazotep Plating
21% of 39 decks +19% synergy
Village Rites
21% of 39 decks +11% synergy
Vampiric Tutor
18% of 39 decks -0% synergy
Plumb the Forbidden
15% of 39 decks +12% synergy
Go for the Throat
15% of 39 decks +8% synergy
Rowan's Grim Search
14% of 21 decks +13% synergy
Tragic Slip
13% of 39 decks +9% synergy
Frantic Search
13% of 39 decks +1% synergy
Mana Drain
13% of 39 decks -2% synergy
Fierce Guardianship
13% of 39 decks -5% synergy
Brainstorm
13% of 39 decks -8% synergy
Cyclonic Rift
13% of 39 decks -15% synergy
An Offer You Can't Refuse
11% of 35 decks -9% synergy
Infernal Grasp
10% of 39 decks +3% synergy
Malakir Rebirth
10% of 39 decks +2% synergy
Deadly Rollick
10% of 39 decks -1% synergy
Tainted Indulgence
9% of 35 decks +7% synergy
Drown in the Loch
8% of 39 decks +2% synergy
Fact or Fiction
8% of 39 decks +1% synergy
Arcane Denial
8% of 39 decks -12% synergy
Sorceries
Distant Melody
36% of 39 decks +31% synergy
Feed the Swarm
36% of 39 decks +18% synergy
Army of the Damned
31% of 39 decks +29% synergy
Victimize
31% of 39 decks +19% synergy
Reanimate
31% of 39 decks +15% synergy
Dread Summons
28% of 39 decks +27% synergy
Dread Return
28% of 39 decks +23% synergy
Diabolic Intent
26% of 39 decks +17% synergy
Lich-Knights' Conquest
19% of 21 decks +16% synergy
Dark Salvation
18% of 39 decks +17% synergy
Buried Alive
18% of 39 decks +12% synergy
Demonic Tutor
18% of 39 decks -4% synergy
Ghouls' Night Out
15% of 39 decks +15% synergy
Diabolic Tutor
15% of 39 decks +9% synergy
Ghoulcaller's Chant
13% of 39 decks +13% synergy
Necrotic Hex
13% of 39 decks +12% synergy
Persist
10% of 39 decks +8% synergy
Living Death
10% of 39 decks +5% synergy
Toxic Deluge
10% of 39 decks -7% synergy
From Under the Floorboards
8% of 39 decks +7% synergy
Exhume
8% of 39 decks +7% synergy
Command the Dreadhorde
8% of 39 decks +7% synergy
Crippling Fear
8% of 39 decks +6% synergy
Patriarch's Bidding
8% of 39 decks +4% synergy
Sign in Blood
8% of 39 decks -2% synergy
Ponder
8% of 39 decks -5% synergy
Utility Artifacts
Altar of Dementia
31% of 39 decks +28% synergy
Herald's Horn
23% of 39 decks +17% synergy
Skullclamp
21% of 39 decks +8% synergy
Wand of Orcus
18% of 39 decks +17% synergy
Wayfarer's Bauble
15% of 39 decks +5% synergy
Pyre of Heroes
13% of 39 decks +12% synergy
Altar of the Brood
13% of 39 decks +12% synergy
Swiftfoot Boots
13% of 39 decks -15% synergy
Nim Deathmantle
10% of 39 decks +10% synergy
Bontu's Monument
10% of 39 decks +8% synergy
Expedition Map
10% of 39 decks +7% synergy
Bolas's Citadel
10% of 39 decks +1% synergy
Lightning Greaves
10% of 39 decks -15% synergy
Blasting Station
8% of 39 decks +7% synergy
Mindcrank
8% of 39 decks +6% synergy
Alhammarret's Archive
8% of 39 decks +6% synergy
Jet Medallion
8% of 39 decks +5% synergy
Urza's Incubator
8% of 39 decks +4% synergy
Enchantments
Endless Ranks of the Dead
46% of 39 decks +44% synergy
Dreadhorde Invasion
31% of 39 decks +28% synergy
Open the Graves
26% of 39 decks +24% synergy
Grave Pact
23% of 39 decks +19% synergy
Virtue of Persistence
21% of 19 decks +18% synergy
Kindred Discovery
21% of 39 decks +13% synergy
Liliana's Mastery
18% of 39 decks +17% synergy
The Meathook Massacre
15% of 39 decks +10% synergy
Reflections of Littjara
15% of 39 decks +10% synergy
Bastion of Remembrance
15% of 39 decks +9% synergy
Rhystic Study
15% of 39 decks -12% synergy
Black Market
13% of 39 decks +8% synergy
Phyrexian Arena
13% of 39 decks -2% synergy
Faces of the Past
10% of 39 decks +10% synergy
Necromancer's Stockpile
10% of 39 decks +10% synergy
Zombie Infestation
10% of 39 decks +10% synergy
Graf Harvest
10% of 39 decks +10% synergy
Animate Dead
10% of 39 decks +1% synergy
Call to the Grave
8% of 39 decks +7% synergy
Curse of the Restless Dead
8% of 39 decks +7% synergy
Tortured Existence
8% of 39 decks +6% synergy
Battles
Invasion of Innistrad
11% of 27 decks +11% synergy
Invasion of Amonkhet
11% of 27 decks +10% synergy
Planeswalkers
Liliana, Death's Majesty
28% of 39 decks +26% synergy
Liliana, Untouched by Death
23% of 39 decks +23% synergy
Liliana, Dreadhorde General
23% of 39 decks +19% synergy
Utility Lands
Bojuka Bog
41% of 39 decks +11% synergy
Cabal Coffers
38% of 39 decks +28% synergy
Urborg, Tomb of Yawgmoth
36% of 39 decks +26% synergy
Reliquary Tower
28% of 39 decks -1% synergy
Field of the Dead
23% of 39 decks +20% synergy
Mortuary Mire
23% of 39 decks +18% synergy
Unholy Grotto
21% of 39 decks +20% synergy
Crypt of Agadeem
18% of 39 decks +16% synergy
Phyrexian Tower
18% of 39 decks +9% synergy
Takenuma, Abandoned Mire
11% of 37 decks +0% synergy
Nykthos, Shrine to Nyx
10% of 39 decks +5% synergy
Mystic Sanctuary
10% of 39 decks -2% synergy
Cabal Stronghold
8% of 39 decks +4% synergy
Witch's Cottage
8% of 39 decks +4% synergy
Castle Locthwain
8% of 39 decks +2% synergy
Temple of the False God
8% of 39 decks -2% synergy
Mana Artifacts
Sol Ring
95% of 39 decks +10% synergy
Arcane Signet
87% of 39 decks +15% synergy
Talisman of Dominance
64% of 39 decks +33% synergy
Talisman of Indulgence
60% of 5 decks +34% synergy
Dimir Signet
51% of 39 decks +22% synergy
Orzhov Signet
50% of 6 decks +23% synergy
Crowded Crypt
44% of 39 decks +42% synergy
Commander's Sphere
26% of 39 decks +10% synergy
Thought Vessel
23% of 39 decks +6% synergy
Sky Diamond
13% of 39 decks +8% synergy
Fellwar Stone
13% of 39 decks -8% synergy
Charcoal Diamond
10% of 39 decks +5% synergy
Mind Stone
10% of 39 decks -7% synergy
Lands
Command Tower
87% of 39 decks +13% synergy
Sunken Hollow
74% of 39 decks +40% synergy
Watery Grave
56% of 39 decks +16% synergy
Choked Estuary
51% of 39 decks +35% synergy
Path of Ancestry
51% of 39 decks +30% synergy
Glacial Fortress
50% of 6 decks +24% synergy
Arcane Sanctum
50% of 6 decks +22% synergy
Hallowed Fountain
50% of 6 decks +9% synergy
Drowned Catacomb
46% of 39 decks +21% synergy
Myriad Landscape
38% of 39 decks +19% synergy
Dimir Aqueduct
36% of 39 decks +19% synergy
Tainted Isle
31% of 39 decks +20% synergy
Darkwater Catacombs
31% of 39 decks +16% synergy
Shipwreck Marsh
31% of 39 decks +12% synergy
Evolving Wilds
31% of 39 decks +10% synergy
Undercity Sewers
29% of 14 decks +15% synergy
Unclaimed Territory
28% of 39 decks +23% synergy
Temple of Deceit
28% of 39 decks +12% synergy
Underground River
28% of 39 decks +9% synergy
Polluted Delta
26% of 39 decks +14% synergy
Terramorphic Expanse
26% of 39 decks +10% synergy
Morphic Pool
26% of 39 decks -0% synergy
Secluded Courtyard
22% of 37 decks +17% synergy
Ice Tunnel
21% of 39 decks +18% synergy
Exotic Orchard
21% of 39 decks -15% synergy
Sunken Ruins
18% of 39 decks +13% synergy
Clearwater Pathway
15% of 39 decks +6% synergy
Fetid Pools
13% of 39 decks +7% synergy
Dismal Backwater
13% of 39 decks +6% synergy
Cavern of Souls
13% of 39 decks +6% synergy
Port of Karfell
10% of 39 decks +8% synergy
Darkslick Shores
10% of 39 decks +5% synergy
Fabled Passage
10% of 39 decks +1% synergy
Scalding Tarn
10% of 39 decks -1% synergy
Contaminated Aquifer
9% of 33 decks +6% synergy
Jwar Isle Refuge
8% of 39 decks +6% synergy
Bloodstained Mire
8% of 39 decks -3% synergy
Flooded Strand
8% of 39 decks -3% synergy
Marsh Flats
8% of 39 decks -4% synergy
Verdant Catacombs
8% of 39 decks -4% synergy
Misty Rainforest
8% of 39 decks -4% synergy