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
0.08% of 18970 decks 15 decks
Gisa and Geralf
0.09% of 4645 decks 4 decks
Varina, Lich Queen
0.06% of 7044 decks 4 decks
The Scarab God
0.04% of 10352 decks 4 decks
Grimgrin, Corpse-Born
0.10% of 2083 decks 2 decks
Sidisi, Brood Tyrant
0.02% of 6243 decks 1 decks
Sedris, the Traitor King
0.05% of 1886 decks 1 decks
Mairsil, the Pretender
0.06% of 1576 decks 1 decks
Thraximundar
0.05% of 1964 decks 1 decks
Marneus Calgar
0.01% of 10468 decks 1 decks
Morophon, the Boundless
0.01% of 9863 decks 1 decks
Zimone and Dina
0.01% of 6969 decks 1 decks
Phenax, God of Deception
0.02% of 6334 decks 1 decks
Eloise, Nephalia Sleuth
0.07% of 1406 decks 1 decks
Kraum, Ludevic's Opus // Tormod, the Desecrator
0.35% of 288 decks 1 decks
High Synergy Cards
Gravecrawler
79% of 39 decks +77% synergy
Diregraf Captain
77% of 39 decks +73% synergy
Rooftop Storm
74% of 39 decks +73% synergy
Diregraf Colossus
74% of 39 decks +72% synergy
God-Eternal Oketra
67% of 6 decks +66% synergy
Cleaver Skaab
64% of 39 decks +63% synergy
Undead Augur
64% of 39 decks +62% synergy
Warren Soultrader
67% of 9 decks +59% synergy
Accursed Marauder
67% of 6 decks +57% synergy
Gisa and Geralf
59% of 39 decks +57% synergy
Top Cards
Gray Merchant of Asphodel
59% of 39 decks +50% synergy
Empty the Laboratory
56% of 39 decks +56% 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
Zombie Apocalypse
51% of 39 decks +50% synergy
Death Baron
51% of 39 decks +49% synergy
Phyrexian Altar
51% of 39 decks +47% synergy
Mikaeus, the Unhallowed
49% of 39 decks +46% synergy
Midnight Reaper
49% of 39 decks +45% synergy
Creatures
Carrion Feeder
49% of 39 decks +44% synergy
Cemetery Reaper
46% of 39 decks +44% synergy
Hordewing Skaab
44% of 39 decks +42% synergy
Cryptbreaker
44% of 39 decks +42% synergy
Ghoulcaller Gisa
44% of 39 decks +42% synergy
Fleshbag Marauder
44% of 39 decks +40% synergy
Champion of the Perished
38% of 39 decks +37% synergy
Havengul Lich
38% of 39 decks +37% synergy
Lord of the Accursed
38% of 39 decks +37% synergy
Geralf, Visionary Stitcher
36% of 39 decks +35% synergy
Overcharged Amalgam
33% of 39 decks +32% synergy
Vengeful Dead
31% of 39 decks +30% synergy
Plague Belcher
31% of 39 decks +30% synergy
Grimgrin, Corpse-Born
31% of 39 decks +30% synergy
Undead Warchief
31% of 39 decks +29% synergy
Sidisi, Undead Vizier
31% of 39 decks +29% synergy
The Scarab God
31% of 39 decks +29% synergy
Gleaming Overseer
31% of 39 decks +28% synergy
Corpse Augur
28% of 39 decks +28% synergy
Undead Alchemist
28% of 39 decks +28% synergy
Noxious Ghoul
28% of 39 decks +27% synergy
Tomb Tyrant
28% of 39 decks +27% synergy
Gisa, the Hellraiser
27% of 11 decks +26% synergy
Archghoul of Thraben
26% of 39 decks +25% synergy
Ravenous Rotbelly
26% of 39 decks +25% synergy
Forgotten Creation
26% of 39 decks +25% synergy
Feral Ghoul
25% of 16 decks +24% synergy
Vizier of the Scorpion
23% of 39 decks +23% synergy
Relentless Dead
23% of 39 decks +22% synergy
Poppet Stitcher
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
22% of 27 decks +10% synergy
Acererak the Archlich
21% of 39 decks +20% synergy
Eternal Skylord
21% of 39 decks +20% synergy
Liliana's Standard Bearer
21% of 39 decks +20% synergy
Vile Entomber
21% of 39 decks +18% synergy
Syr Konrad, the Grim
21% of 39 decks +12% synergy
Rot Hulk
18% of 39 decks +18% synergy
Graveborn Muse
18% of 39 decks +17% synergy
Lich Lord of Unx
18% of 39 decks +17% synergy
Grave Titan
18% of 39 decks +16% synergy
Drivnod, Carnage Dominus
17% of 30 decks +13% synergy
Unbreathing Horde
15% of 39 decks +15% synergy
Noosegraf Mob
15% of 39 decks +15% synergy
Fell Stinger
15% of 39 decks +14% synergy
Titan of Littjara
13% of 23 decks +12% synergy
Phyrexian Ghoul
13% of 39 decks +13% synergy
Tainted Adversary
13% of 39 decks +12% synergy
Putrid Goblin
13% of 39 decks +12% synergy
Instants
Swords to Plowshares
50% of 6 decks -13% synergy
Dark Ritual
26% of 39 decks +3% synergy
Counterspell
26% of 39 decks -17% synergy
Entomb
23% of 39 decks +16% synergy
Negate
23% of 39 decks +0% synergy
Rise of the Dread Marn
21% of 39 decks +20% synergy
Lazotep Plating
21% of 39 decks +19% synergy
Village Rites
21% of 39 decks +11% synergy
Plumb the Forbidden
18% of 39 decks +15% synergy
Go for the Throat
18% of 39 decks +11% synergy
Vampiric Tutor
18% of 39 decks -0% synergy
Tragic Slip
15% of 39 decks +12% synergy
Rowan's Grim Search
14% of 22 decks +13% synergy
Frantic Search
13% of 39 decks +1% synergy
Mana Drain
13% of 39 decks -2% synergy
Brainstorm
13% of 39 decks -8% synergy
Cyclonic Rift
13% of 39 decks -15% synergy
An Offer You Can't Refuse
11% of 36 decks -9% synergy
Pile On
11% of 28 decks +10% synergy
Infernal Grasp
10% of 39 decks +3% synergy
Malakir Rebirth
10% of 39 decks +2% synergy
Deadly Rollick
10% of 39 decks -0% synergy
Fierce Guardianship
10% of 39 decks -8% synergy
Tainted Indulgence
8% of 36 decks +7% synergy
Drown in the Loch
8% of 39 decks +1% synergy
Fact or Fiction
8% of 39 decks +1% synergy
Reality Shift
8% of 39 decks -1% synergy
Swan Song
8% of 39 decks -9% synergy
Arcane Denial
8% of 39 decks -12% synergy
Sorceries
Distant Melody
38% of 39 decks +33% synergy
Feed the Swarm
38% of 39 decks +20% synergy
Reanimate
31% of 39 decks +15% synergy
Dread Summons
28% of 39 decks +27% synergy
Army of the Damned
28% of 39 decks +26% synergy
Diabolic Intent
28% of 39 decks +19% synergy
Victimize
28% of 39 decks +17% synergy
Dread Return
26% of 39 decks +20% synergy
Dark Salvation
21% of 39 decks +20% synergy
Lich-Knights' Conquest
18% of 22 decks +15% 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
Necrotic Hex
13% of 39 decks +12% synergy
Ghoulcaller's Chant
10% of 39 decks +10% 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
Unmarked Grave
8% of 39 decks +5% 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
33% of 39 decks +31% synergy
Herald's Horn
23% of 39 decks +17% synergy
Skullclamp
23% of 39 decks +11% synergy
Wand of Orcus
18% of 39 decks +17% synergy
Wayfarer's Bauble
18% of 39 decks +8% synergy
Pyre of Heroes
15% of 39 decks +15% 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
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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 +5% synergy
Enchantments
Endless Ranks of the Dead
46% of 39 decks +44% synergy
Dreadhorde Invasion
31% of 39 decks +28% synergy
Open the Graves
23% of 39 decks +22% synergy
Grave Pact
23% of 39 decks +19% synergy
Kindred Discovery
21% of 39 decks +13% synergy
Virtue of Persistence
20% of 20 decks +17% synergy
Bastion of Remembrance
18% of 39 decks +12% synergy
Liliana's Mastery
15% of 39 decks +14% synergy
The Meathook Massacre
15% of 39 decks +10% synergy
Reflections of Littjara
15% of 39 decks +10% synergy
Rhystic Study
15% of 39 decks -12% synergy
Faces of the Past
13% of 39 decks +13% synergy
Black Market
13% of 39 decks +8% synergy
Phyrexian Arena
13% of 39 decks -2% synergy
Zombie Infestation
10% of 39 decks +10% synergy
Animate Dead
10% of 39 decks +1% synergy
Necromancer's Stockpile
8% of 39 decks +8% synergy
Call to the Grave
8% of 39 decks +7% synergy
Graf Harvest
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
Leyline of Anticipation
8% of 39 decks +3% synergy
Battles
Invasion of Innistrad
11% of 28 decks +10% synergy
Invasion of Amonkhet
11% of 28 decks +9% 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 +20% synergy
Utility Lands
Bojuka Bog
44% of 39 decks +13% 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
Mortuary Mire
26% of 39 decks +21% synergy
Field of the Dead
23% of 39 decks +20% synergy
Unholy Grotto
21% of 39 decks +20% synergy
Crypt of Agadeem
21% of 39 decks +19% synergy
Phyrexian Tower
18% of 39 decks +9% synergy
Nykthos, Shrine to Nyx
10% of 39 decks +5% synergy
Mystic Sanctuary
10% of 39 decks -2% synergy
Takenuma, Abandoned Mire
8% of 37 decks -3% 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
67% of 39 decks +35% synergy
Talisman of Indulgence
60% of 5 decks +34% synergy
Dimir Signet
54% of 39 decks +24% synergy
Orzhov Signet
50% of 6 decks +23% synergy
Crowded Crypt
46% of 39 decks +45% synergy
Commander's Sphere
26% of 39 decks +10% synergy
Thought Vessel
23% of 39 decks +6% synergy
Fellwar Stone
15% of 39 decks -6% synergy
Sky Diamond
13% of 39 decks +8% synergy
Mind Stone
13% of 39 decks -5% synergy
Charcoal Diamond
10% of 39 decks +5% 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
54% of 39 decks +37% synergy
Path of Ancestry
51% of 39 decks +30% synergy
Glacial Fortress
50% of 6 decks +25% 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
33% of 39 decks +22% synergy
Darkwater Catacombs
33% of 39 decks +18% synergy
Unclaimed Territory
31% of 39 decks +26% synergy
Temple of Deceit
31% of 39 decks +14% synergy
Shipwreck Marsh
31% of 39 decks +12% synergy
Underground River
28% of 39 decks +9% synergy
Evolving Wilds
28% of 39 decks +7% synergy
Undercity Sewers
27% of 15 decks +13% synergy
Polluted Delta
26% of 39 decks +14% synergy
Terramorphic Expanse
26% of 39 decks +10% synergy
Morphic Pool
26% of 39 decks -1% synergy
Exotic Orchard
23% of 39 decks -12% synergy
Secluded Courtyard
22% of 37 decks +17% synergy
Ice Tunnel
18% of 39 decks +15% synergy
Sunken Ruins
18% of 39 decks +13% synergy
Clearwater Pathway
15% of 39 decks +5% synergy
Fetid Pools
13% of 39 decks +7% synergy
Cavern of Souls
13% of 39 decks +6% synergy
Dismal Backwater
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 34 decks +5% synergy
Jwar Isle Refuge
8% of 39 decks +5% 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