Eternal Scourge + Nightmare Shepherd + Ashnod's Altar

Eternal Scourge
Nightmare Shepherd
Ashnod's Altar

Requires
Eternal Scourge must be on the battlefield. Nightmare Shepherd must be on the battlefield. Ashnod's Altar must be on the battlefield.
Steps
  1. Activate Ashnod's Altar by sacrificing Eternal Scourge, adding .
  2. Nightmare Shepherd triggers.
  3. Resolve the Nightmare Shepherd trigger, exiling Eternal Scourge from your graveyard and creating a 1/1 copy of Eternal Scourge that is a Nightmare in addition to its other types.
  4. Activate Ashnod's Altar by sacrificing the Eternal Scourge token, adding .
  5. Cast Eternal Scourge from exile by paying 3.
  6. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite storm count.

Umbris, Fear Manifest
0.31% of 5828 decks 18 decks
Kinzu of the Bleak Coven
0.93% of 321 decks 3 decks
Braids, Arisen Nightmare
0.01% of 7006 decks 1 decks
The Master of Keys
0.04% of 2842 decks 1 decks
Meren of Clan Nel Toth
0.01% of 15123 decks 1 decks
Pharika, God of Affliction
0.13% of 765 decks 1 decks
Tasigur, the Golden Fang
0.02% of 5843 decks 1 decks
Yidris, Maelstrom Wielder
0.02% of 6645 decks 1 decks
Sakashima of a Thousand Faces // Tormod, the Desecrator
0.18% of 550 decks 1 decks
Ikra Shidiqi, the Usurper // Kraum, Ludevic's Opus
0.19% of 534 decks 1 decks
Marchesa, the Black Rose
0.01% of 9456 decks 1 decks
Gonti, Lord of Luxury
0.07% of 1350 decks 1 decks
Erebos, God of the Dead
0.09% of 1155 decks 1 decks
Snapdax, Apex of the Hunt
0.11% of 887 decks 1 decks
Teysa Karlov
0.01% of 15565 decks 1 decks
Ravos, Soultender // Tormod, the Desecrator
0.27% of 368 decks 1 decks
Syr Konrad, the Grim
0.02% of 4644 decks 1 decks
Kydele, Chosen of Kruphix // Ravos, Soultender
0.27% of 364 decks 1 decks
New Cards
Fear of Impostors
57% of 7 decks +55% synergy
Silent Hallcreeper
57% of 7 decks +50% synergy
High Synergy Cards
Torrent Elemental
100% of 4 decks +100% synergy
Ancient Cellarspawn
80% of 5 decks +74% synergy
Ashiok, Dream Render
64% of 25 decks +60% synergy
Tasha's Hideous Laughter
60% of 25 decks +59% synergy
Grazilaxx, Illithid Scholar
60% of 25 decks +58% synergy
Captain N'ghathrod
55% of 22 decks +54% synergy
Spellskite
56% of 25 decks +53% synergy
Ashiok, Nightmare Muse
48% of 25 decks +47% synergy
Aboleth Spawn
45% of 22 decks +44% synergy
Zellix, Sanity Flayer
45% of 22 decks +44% synergy
Top Cards
Nature's Lore
67% of 6 decks +35% synergy
Rhystic Study
52% of 25 decks +24% synergy
Counterspell
52% of 25 decks +9% synergy
Dark Ritual
50% of 38 decks +28% synergy
Cyclonic Rift
48% of 25 decks +20% synergy
Wharf Infiltrator
44% of 25 decks +43% synergy
Maddening Cacophony
44% of 25 decks +42% synergy
Hullbreaker Horror
43% of 23 decks +36% synergy
Dauthi Voidwalker
41% of 37 decks +32% synergy
Sire of Stagnation
40% of 25 decks +37% synergy
Creatures
Uchuulon
38% of 32 decks +37% synergy
Thing in the Ice
36% of 25 decks +35% synergy
Toxrill, the Corrosive
35% of 23 decks +32% synergy
Ravenous Chupacabra
34% of 38 decks +30% synergy
Sludge Monster
32% of 25 decks +31% synergy
Nemesis of Reason
32% of 25 decks +30% synergy
Spark Double
32% of 25 decks +25% synergy
Grell Philosopher
32% of 22 decks +31% synergy
Roaming Throne
32% of 22 decks +22% synergy
Consuming Aberration
28% of 25 decks +24% synergy
Phyrexian Revoker
26% of 38 decks +26% synergy
Sakashima of a Thousand Faces
24% of 25 decks +21% synergy
Oblivion Sower
24% of 38 decks +23% synergy
Viscera Seer
24% of 38 decks +14% synergy
Blood Artist
24% of 38 decks +12% synergy
Braids, Arisen Nightmare
23% of 31 decks +15% synergy
Overcharged Amalgam
22% of 23 decks +21% synergy
Gray Merchant of Asphodel
21% of 38 decks +12% synergy
Falthis, Shadowcat Familiar
19% of 37 decks +18% synergy
Yarok's Fenlurker
18% of 38 decks +18% synergy
Phyrexian Obliterator
18% of 38 decks +17% synergy
Crypt Ghast
18% of 38 decks +13% synergy
Zulaport Cutthroat
18% of 38 decks +9% synergy
Vashta Nerada
18% of 22 decks +17% synergy
Vein Ripper
18% of 17 decks +15% synergy
Starving Revenant
17% of 18 decks +16% synergy
Chasm Skulker
16% of 25 decks +12% synergy
Dread Presence
16% of 38 decks +14% synergy
Woe Strider
16% of 38 decks +13% synergy
Ayara, First of Locthwain
16% of 38 decks +12% synergy
Carrion Feeder
16% of 38 decks +11% synergy
Illithid Harvester
14% of 22 decks +13% synergy
Hell's Caretaker
13% of 38 decks +13% synergy
Phyrexian Rager
13% of 38 decks +13% synergy
Liliana, Heretical Healer
13% of 38 decks +12% synergy
Pawn of Ulamog
13% of 38 decks +11% synergy
Gravecrawler
13% of 38 decks +10% synergy
Yahenni, Undying Partisan
13% of 38 decks +10% synergy
Yawgmoth, Thran Physician
13% of 38 decks +10% synergy
Reassembling Skeleton
13% of 38 decks +9% synergy
Pitiless Plunderer
13% of 38 decks +6% synergy
Defiler of Flesh
13% of 31 decks +12% synergy
Brainstealer Dragon
12% of 32 decks +11% synergy
Ruthless Technomancer
12% of 33 decks +10% synergy
Misthollow Griffin
12% of 25 decks +12% synergy
Forgotten Creation
12% of 25 decks +11% synergy
Trophy Mage
12% of 25 decks +10% synergy
Thassa, Deep-Dwelling
12% of 25 decks +9% synergy
Phyrexian Metamorph
12% of 25 decks +5% synergy
Arvinox, the Mind Flail
12% of 34 decks +11% synergy
Instants
Enlightened Tutor
60% of 5 decks +42% synergy
Swords to Plowshares
60% of 5 decks -3% synergy
Heroic Intervention
50% of 6 decks +20% synergy
Assassin's Trophy
50% of 6 decks +20% synergy
Negate
40% of 25 decks +17% synergy
Vampiric Tutor
37% of 38 decks +19% synergy
Resculpt
36% of 25 decks +31% synergy
Mana Drain
36% of 25 decks +21% synergy
Deadly Rollick
32% of 37 decks +22% synergy
Drown in Dreams
28% of 25 decks +26% synergy
Brainstorm
28% of 25 decks +7% synergy
Not Dead After All
25% of 24 decks +21% synergy
Malakir Rebirth
24% of 37 decks +16% synergy
Reality Shift
24% of 25 decks +15% synergy
Mystical Tutor
24% of 25 decks +9% synergy
Displace
20% of 25 decks +18% synergy
Arcane Denial
20% of 25 decks +0% synergy
Baleful Mastery
16% of 37 decks +13% synergy
Perplex
16% of 25 decks +15% synergy
Ghostly Flicker
16% of 25 decks +11% synergy
Snap
16% of 25 decks +9% synergy
Force of Will
16% of 25 decks +5% synergy
Swan Song
16% of 25 decks -0% synergy
Fierce Guardianship
16% of 25 decks -2% synergy
An Offer You Can't Refuse
14% of 22 decks -7% synergy
Disallow
12% of 25 decks +10% synergy
Muddle the Mixture
12% of 25 decks +7% synergy
Frantic Search
12% of 25 decks -0% synergy
Cabal Ritual
11% of 38 decks +6% synergy
Infernal Grasp
8% of 36 decks +1% synergy
Spoils of Blood
8% of 38 decks +8% synergy
Vraska's Contempt
8% of 38 decks +8% synergy
Dismember
8% of 38 decks +5% synergy
Defile
8% of 38 decks +4% synergy
Entomb
8% of 38 decks +1% synergy
Sorceries
Three Visits
50% of 6 decks +25% synergy
Farseek
50% of 6 decks +16% synergy
Demonic Tutor
34% of 38 decks +12% synergy
Feed the Swarm
30% of 37 decks +12% synergy
Toxic Deluge
26% of 38 decks +9% synergy
Rite of Replication
24% of 25 decks +21% synergy
Reanimate
18% of 38 decks +3% synergy
Foresight
16% of 25 decks +16% synergy
Manipulate Fate
16% of 25 decks +16% synergy
Extract
16% of 25 decks +16% synergy
Fractured Sanity
16% of 25 decks +14% synergy
Curse of the Swine
16% of 25 decks +12% synergy
Sea Gate Restoration
16% of 25 decks +11% synergy
Windfall
16% of 25 decks +3% synergy
Essence Harvest
16% of 38 decks +15% synergy
Damnation
16% of 38 decks +8% synergy
Sign in Blood
13% of 38 decks +3% synergy
Victimize
13% of 38 decks +2% synergy
Rite of Consumption
11% of 38 decks +10% synergy
Mutilate
11% of 38 decks +9% synergy
Diabolic Intent
11% of 38 decks +2% synergy
Agadeem's Awakening
8% of 37 decks +5% synergy
Yawgmoth's Will
8% of 38 decks +7% synergy
Praetor's Grasp
8% of 38 decks +5% synergy
Rise of the Dark Realms
8% of 38 decks +5% synergy
Dread Return
8% of 38 decks +3% synergy
Buried Alive
8% of 38 decks +2% synergy
Diabolic Tutor
8% of 38 decks +2% synergy
Utility Artifacts
Lightning Greaves
34% of 38 decks +9% synergy
Phyrexian Altar
26% of 38 decks +22% synergy
Panharmonicon
24% of 38 decks +20% synergy
Tormod's Crypt
21% of 38 decks +20% synergy
Mindcrank
21% of 38 decks +19% synergy
Swiftfoot Boots
21% of 38 decks -7% synergy
Whispersilk Cloak
18% of 38 decks +15% synergy
Soul-Guide Lantern
16% of 38 decks +14% synergy
Altar of Dementia
16% of 38 decks +13% synergy
Bolas's Citadel
16% of 38 decks +7% synergy
Lantern of the Lost
15% of 34 decks +15% synergy
Helm of Obedience
13% of 38 decks +13% synergy
Relic of Progenitus
13% of 38 decks +13% synergy
Nim Deathmantle
13% of 38 decks +12% synergy
Mimic Vat
13% of 38 decks +12% synergy
Urza's Incubator
13% of 38 decks +10% synergy
Wayfarer's Bauble
13% of 38 decks +3% synergy
Skullclamp
13% of 38 decks +1% synergy
Stone of Erech
12% of 26 decks +11% synergy
Altar of Bhaal
9% of 32 decks +9% synergy
Bag of Devouring
8% of 36 decks +8% synergy
Altar of the Brood
8% of 38 decks +7% synergy
Mirage Mirror
8% of 38 decks +6% synergy
Bontu's Monument
8% of 38 decks +6% synergy
Jet Medallion
8% of 38 decks +5% synergy
Whip of Erebos
8% of 38 decks +4% synergy
Shadowspear
8% of 38 decks +4% synergy
Enchantments
Titans' Nest
75% of 4 decks +74% synergy
Curse of Clinging Webs
50% of 6 decks +49% synergy
Leyline of the Void
37% of 38 decks +36% synergy
Endless Evil
36% of 22 decks +35% synergy
Black Market Connections
28% of 32 decks +17% synergy
Mystic Remora
24% of 25 decks +6% synergy
Planar Void
24% of 38 decks +24% synergy
Phyrexian Arena
21% of 38 decks +6% synergy
Web of Inertia
20% of 25 decks +20% synergy
Propaganda
20% of 25 decks +8% synergy
Aqueous Form
16% of 25 decks +12% synergy
Reflections of Littjara
16% of 25 decks +11% synergy
Bloodchief Ascension
16% of 38 decks +12% synergy
Phyrexian Reclamation
16% of 38 decks +12% synergy
Animate Dead
16% of 38 decks +7% synergy
Court of Cunning
12% of 25 decks +10% synergy
Dictate of Erebos
11% of 38 decks +7% synergy
Grave Pact
11% of 38 decks +6% synergy
Black Market
11% of 38 decks +6% synergy
Necropotence
11% of 38 decks +5% synergy
Sanguine Bond
11% of 38 decks +5% synergy
Bastion of Remembrance
8% of 37 decks +2% synergy
Revel in Riches
8% of 38 decks +4% synergy
Kaya's Ghostform
8% of 38 decks +4% synergy
Exquisite Blood
8% of 38 decks +3% synergy
Planeswalkers
Ashiok, Nightmare Weaver
24% of 25 decks +23% synergy
Liliana, Dreadhorde General
16% of 38 decks +12% synergy
Ashiok, Wicked Manipulator
15% of 26 decks +15% synergy
Lolth, Spider Queen
11% of 36 decks +10% synergy
Utility Lands
Bojuka Bog
71% of 38 decks +41% synergy
Boseiju, Who Endures
60% of 5 decks +40% synergy
Urborg, Tomb of Yawgmoth
39% of 38 decks +30% synergy
Rogue's Passage
34% of 38 decks +15% synergy
Cabal Coffers
32% of 38 decks +21% synergy
Reliquary Tower
29% of 38 decks -1% synergy
Otawara, Soaring City
27% of 22 decks +10% synergy
Scavenger Grounds
24% of 38 decks +20% synergy
Phyrexian Tower
24% of 38 decks +15% synergy
Shizo, Death's Storehouse
21% of 38 decks +16% synergy
Takenuma, Abandoned Mire
18% of 33 decks +8% synergy
Witch's Clinic
16% of 37 decks +15% synergy
Command Beacon
16% of 38 decks +11% synergy
Pit of Offerings
14% of 22 decks +13% synergy
Minas Morgul, Dark Fortress
14% of 22 decks +11% synergy
Yavimaya, Cradle of Growth
14% of 37 decks +4% synergy
Cabal Stronghold
13% of 38 decks +10% synergy
Barren Moor
13% of 38 decks +9% synergy
Castle Locthwain
13% of 38 decks +8% synergy
Ancient Tomb
13% of 38 decks +3% synergy
Mystic Sanctuary
12% of 25 decks -0% synergy
Nykthos, Shrine to Nyx
11% of 38 decks +5% synergy
City of Shadows
8% of 38 decks +8% synergy
Vesuva
8% of 38 decks +7% synergy
Crypt of Agadeem
8% of 38 decks +6% synergy
Dakmor Salvage
8% of 38 decks +6% synergy
Thespian's Stage
8% of 38 decks +5% synergy
Mana Artifacts
Sol Ring
89% of 38 decks +5% synergy
Arcane Signet
76% of 38 decks +4% synergy
Talisman of Dominance
48% of 25 decks +17% synergy
Dimir Signet
44% of 25 decks +14% synergy
Fellwar Stone
34% of 38 decks +13% synergy
Mind Stone
32% of 38 decks +14% synergy
Midnight Clock
12% of 25 decks +7% synergy
Mana Crypt
11% of 38 decks +2% synergy
Thought Vessel
11% of 38 decks -6% synergy
Everflowing Chalice
8% of 38 decks +3% synergy
Chrome Mox
8% of 38 decks +2% synergy
Mana Vault
8% of 38 decks +2% synergy
Lands
Volcanic Island
100% of 3 decks +86% synergy
Overgrown Tomb
100% of 6 decks +58% synergy
Command Tower
79% of 38 decks +5% synergy
Watery Grave
76% of 25 decks +35% synergy
Tropical Island
75% of 4 decks +61% synergy
Zagoth Triome
75% of 4 decks +44% synergy
Underground River
60% of 25 decks +40% synergy
Sunken Hollow
60% of 25 decks +25% synergy
Godless Shrine
60% of 5 decks +19% synergy
Drowned Catacomb
56% of 25 decks +30% synergy
Bayou
50% of 6 decks +36% synergy
Morphic Pool
48% of 25 decks +22% synergy
Choked Estuary
44% of 25 decks +27% synergy
Shipwreck Marsh
40% of 25 decks +21% synergy
Undercity Sewers
38% of 8 decks +24% synergy
Clearwater Pathway
36% of 25 decks +26% synergy
Temple of Deceit
36% of 25 decks +20% synergy
Fetid Pools
32% of 25 decks +26% synergy
Tainted Isle
32% of 25 decks +21% synergy
Dimir Aqueduct
32% of 25 decks +15% synergy
Polluted Delta
32% of 38 decks +20% synergy
Path of Ancestry
32% of 38 decks +10% synergy
Exotic Orchard
32% of 38 decks -4% synergy
Terramorphic Expanse
21% of 38 decks +5% synergy
Evolving Wilds
21% of 38 decks +0% synergy
Sunken Ruins
20% of 25 decks +15% synergy
Darkslick Shores
20% of 25 decks +15% synergy
Darkwater Catacombs
20% of 25 decks +5% synergy
Fabled Passage
16% of 38 decks +7% synergy
Cavern of Souls
13% of 38 decks +6% synergy
Dismal Backwater
12% of 25 decks +5% synergy
Underground Sea
12% of 25 decks -2% synergy
Verdant Catacombs
11% of 38 decks -1% synergy
Myriad Landscape
11% of 38 decks -9% synergy
Plaza of Heroes
10% of 31 decks +6% synergy
Secluded Courtyard
9% of 33 decks +5% synergy
Forbidden Orchard
8% of 38 decks +5% synergy
Reflecting Pool
8% of 38 decks +3% synergy
Prismatic Vista
8% of 38 decks +2% synergy
Marsh Flats
8% of 38 decks -3% synergy
Misty Rainforest
8% of 38 decks -4% synergy