Retribution of the Ancients + Phyrexian Altar + Butcher Ghoul

Retribution of the Ancients
Phyrexian Altar
Butcher Ghoul

Requires
All permanents on the battlefield. Butcher Ghoul has no +1/+1 counters on it.
Steps
  1. Activate Phyrexian Altar by sacrificing Butcher Ghoul, adding b.
  2. Butcher Ghoul dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  3. Activate Retribution of the Ancients by paying b and removing a +1/+1 counter from Butcher Ghoul, giving any creature -1/-1 until end of turn.
  4. Repeat.
Results
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Reduce any number of target creatures' toughness to zero.

Top Commanders (2)
Ghave, Guru of Spores
0.14% of 5535 decks 8 decks
Yawgmoth, Thran Physician
0.09% of 5312 decks 5 decks
High Synergy Cards (7)
Young Wolf
85% of 13 decks +84% synergy
Strangleroot Geist
77% of 13 decks +77% synergy
Geralf's Messenger
76% of 29 decks +76% synergy
Mikaeus, the Unhallowed
62% of 29 decks +61% synergy
Kitchen Finks
60% of 10 decks +60% synergy
Zulaport Cutthroat
66% of 29 decks +60% synergy
Good-Fortune Unicorn
60% of 10 decks +59% synergy
Top Cards (10)
Ashnod's Altar
72% of 29 decks +64% synergy
Swords to Plowshares
64% of 11 decks +36% synergy
Farseek
62% of 13 decks +46% synergy
Pitiless Plunderer
59% of 29 decks +55% synergy
Viscera Seer
55% of 29 decks +49% synergy
Blood Artist
55% of 29 decks +49% synergy
Cathars' Crusade
55% of 11 decks +51% synergy
Devoted Druid
54% of 13 decks +52% synergy
Carrion Feeder
52% of 29 decks +49% synergy
Gravecrawler
48% of 29 decks +47% synergy
Creatures (50)
Elas il-Kor, Sadistic Pilgrim
60% of 5 decks +57% synergy
Grimgrin, Corpse-Born
50% of 6 decks +50% synergy
Geralf, Visionary Stitcher
50% of 6 decks +49% synergy
Diregraf Captain
50% of 6 decks +49% synergy
Cruel Celebrant
45% of 11 decks +43% synergy
Grim Haruspex
45% of 29 decks +42% synergy
Bloodspore Thrinax
38% of 13 decks +38% synergy
Mazirek, Kraul Death Priest
38% of 13 decks +38% synergy
Champion of Lambholt
38% of 13 decks +35% synergy
Corpse Knight
36% of 11 decks +35% synergy
Gray Merchant of Asphodel
34% of 29 decks +29% synergy
Conclave Mentor
33% of 9 decks +32% synergy
Pawn of Ulamog
31% of 29 decks +30% synergy
Slimefoot, the Stowaway
31% of 13 decks +30% synergy
Woodfall Primus
31% of 13 decks +30% synergy
Winding Constrictor
31% of 13 decks +30% synergy
Corpsejack Menace
31% of 13 decks +30% synergy
Renata, Called to the Hunt
31% of 13 decks +30% synergy
Eternal Witness
31% of 13 decks +20% synergy
Safehold Elite
30% of 10 decks +30% synergy
Juniper Order Ranger
30% of 10 decks +30% synergy
Luminous Broodmoth
30% of 10 decks +29% synergy
Avacyn's Pilgrim
30% of 10 decks +26% synergy
Esper Sentinel
30% of 10 decks +20% synergy
Twilight Shepherd
27% of 11 decks +27% synergy
Vizier of Remedies
27% of 11 decks +27% synergy
Reveillark
27% of 11 decks +26% synergy
Karmic Guide
27% of 11 decks +25% synergy
Puppeteer Clique
24% of 29 decks +23% synergy
Utopia Mycon
23% of 13 decks +23% synergy
Ivy Lane Denizen
23% of 13 decks +22% synergy
Fertilid
23% of 13 decks +22% synergy
Reclamation Sage
23% of 13 decks +16% synergy
Sakura-Tribe Elder
23% of 13 decks +13% synergy
Evernight Shade
21% of 29 decks +21% synergy
Putrid Goblin
21% of 29 decks +20% synergy
Bloodghast
21% of 29 decks +20% synergy
Reassembling Skeleton
21% of 29 decks +19% synergy
Cryptic Trilobite
18% of 28 decks +18% synergy
Gisa, Glorious Resurrector
18% of 28 decks +17% synergy
Opposition Agent
18% of 28 decks +13% synergy
Sightless Ghoul
17% of 29 decks +17% synergy
Plague Belcher
17% of 29 decks +17% synergy
Sifter of Skulls
17% of 29 decks +17% synergy
Blood Pet
17% of 29 decks +17% synergy
Undead Augur
17% of 29 decks +16% synergy
Ayara, First of Locthwain
17% of 29 decks +15% synergy
Yawgmoth, Thran Physician
17% of 29 decks +15% synergy
Walking Ballista
17% of 29 decks +14% synergy
Headless Rider
15% of 26 decks +14% synergy
Instants (24)
Counterspell
50% of 6 decks +29% synergy
Vampiric Tutor
38% of 29 decks +28% synergy
Dark Ritual
38% of 29 decks +27% synergy
Abrupt Decay
31% of 13 decks +28% synergy
Assassin's Trophy
31% of 13 decks +25% synergy
Beast Within
31% of 13 decks +11% synergy
Abzan Charm
30% of 10 decks +29% synergy
Anguished Unmaking
27% of 11 decks +22% synergy
Path to Exile
27% of 11 decks +9% synergy
Deadly Rollick
25% of 28 decks +20% synergy
Culling the Weak
24% of 29 decks +22% synergy
Inspiring Call
23% of 13 decks +20% synergy
Village Rites
21% of 28 decks +16% synergy
Cabal Ritual
17% of 29 decks +15% synergy
Deadly Dispute
14% of 28 decks +9% synergy
Tragic Slip
14% of 29 decks +12% synergy
Entomb
14% of 29 decks +10% synergy
Reckoner's Bargain
14% of 22 decks +13% synergy
Plumb the Forbidden
11% of 28 decks +9% synergy
Malakir Rebirth
11% of 28 decks +6% synergy
Infernal Grasp
11% of 28 decks +6% synergy
Undying Evil
10% of 29 decks +10% synergy
Mausoleum Secrets
10% of 29 decks +10% synergy
Defile
10% of 29 decks +9% synergy
Sorceries (26)
Demonic Tutor
52% of 29 decks +39% synergy
Three Visits
46% of 13 decks +35% synergy
Rampant Growth
46% of 13 decks +30% synergy
Feed the Swarm
43% of 28 decks +33% synergy
Reanimate
34% of 29 decks +27% synergy
Nature's Lore
31% of 13 decks +17% synergy
Cultivate
31% of 13 decks +8% synergy
Diabolic Intent
24% of 29 decks +20% synergy
Grim Tutor
21% of 29 decks +18% synergy
Victimize
21% of 29 decks +15% synergy
Buried Alive
17% of 29 decks +14% synergy
Diabolic Tutor
17% of 29 decks +13% synergy
Sign in Blood
17% of 29 decks +12% synergy
Profane Tutor
14% of 28 decks +12% synergy
Agadeem's Awakening
14% of 28 decks +12% synergy
Cemetery Recruitment
14% of 29 decks +14% synergy
Dark Salvation
14% of 29 decks +13% synergy
Living Death
14% of 29 decks +11% synergy
Night's Whisper
14% of 29 decks +9% synergy
Toxic Deluge
14% of 29 decks +6% synergy
Unmarked Grave
11% of 28 decks +9% synergy
Beseech the Queen
10% of 29 decks +10% synergy
Bubbling Muck
10% of 29 decks +10% synergy
Unearth
10% of 29 decks +9% synergy
Exsanguinate
10% of 29 decks +8% synergy
Damnation
10% of 29 decks +5% synergy
Utility Artifacts (14)
Skullclamp
45% of 29 decks +32% synergy
Blasting Station
28% of 29 decks +27% synergy
Bontu's Monument
28% of 29 decks +25% synergy
The Ozolith
25% of 28 decks +21% synergy
Altar of Dementia
24% of 29 decks +21% synergy
Bolas's Citadel
24% of 29 decks +18% synergy
Birthing Pod
23% of 13 decks +22% synergy
The Great Henge
23% of 13 decks +18% synergy
Cauldron of Souls
17% of 29 decks +17% synergy
Expedition Map
17% of 29 decks +13% synergy
Lightning Greaves
17% of 29 decks -8% synergy
Jet Medallion
10% of 29 decks +8% synergy
Aetherflux Reservoir
10% of 29 decks +6% synergy
Sensei's Divining Top
10% of 29 decks +4% synergy
Enchantments (24)
Necroduality
50% of 6 decks +49% synergy
Rooftop Storm
50% of 6 decks +49% synergy
Fecundity
46% of 13 decks +46% synergy
Master Chef
43% of 7 decks +42% synergy
Hardened Scales
38% of 13 decks +35% synergy
Parallel Lives
31% of 13 decks +28% synergy
Grave Pact
28% of 29 decks +26% synergy
Thran Vigil
27% of 11 decks +27% synergy
Anointed Procession
27% of 11 decks +23% synergy
Bastion of Remembrance
25% of 28 decks +22% synergy
Phyrexian Arena
24% of 29 decks +17% synergy
Death's Presence
23% of 13 decks +22% synergy
Deathreap Ritual
23% of 13 decks +22% synergy
Doubling Season
23% of 13 decks +19% synergy
Black Market Connections
22% of 18 decks +16% synergy
Black Market
21% of 29 decks +18% synergy
Dictate of Erebos
21% of 29 decks +18% synergy
Animate Dead
21% of 29 decks +16% synergy
The Meathook Massacre
18% of 28 decks +15% synergy
Nest of Scarabs
17% of 29 decks +17% synergy
Carnival of Souls
14% of 29 decks +14% synergy
Dark Prophecy
14% of 29 decks +13% synergy
Necromancy
14% of 29 decks +12% synergy
Necropotence
14% of 29 decks +11% synergy
Planeswalkers (2)
Liliana, Dreadhorde General
14% of 29 decks +12% synergy
Liliana, Death's Majesty
10% of 29 decks +9% synergy
Utility Lands (18)
Urborg, Tomb of Yawgmoth
48% of 29 decks +37% synergy
Cabal Coffers
38% of 29 decks +32% synergy
Bojuka Bog
34% of 29 decks +18% synergy
Phyrexian Tower
31% of 29 decks +27% synergy
Grim Backwoods
31% of 13 decks +30% synergy
Boseiju, Who Endures
30% of 10 decks +20% synergy
Nykthos, Shrine to Nyx
28% of 29 decks +22% synergy
Ancient Tomb
24% of 29 decks +13% synergy
Reliquary Tower
24% of 29 decks -3% synergy
Takenuma, Abandoned Mire
18% of 22 decks +11% synergy
Nesting Grounds
18% of 28 decks +17% synergy
Castle Locthwain
17% of 29 decks +14% synergy
Karn's Bastion
17% of 29 decks +12% synergy
Unholy Grotto
14% of 29 decks +13% synergy
Witch's Cottage
14% of 29 decks +12% synergy
Yavimaya, Cradle of Growth
11% of 28 decks +1% synergy
Volrath's Stronghold
10% of 29 decks +10% synergy
Cabal Stronghold
10% of 29 decks +8% synergy
Mana Artifacts (11)
Sol Ring
86% of 29 decks +2% synergy
Arcane Signet
62% of 29 decks -7% synergy
Dimir Signet
50% of 6 decks +42% synergy
Mana Crypt
21% of 29 decks +9% synergy
Commander's Sphere
17% of 29 decks -0% synergy
Jeweled Lotus
14% of 28 decks +7% synergy
Heraldic Banner
14% of 29 decks +12% synergy
Fellwar Stone
14% of 29 decks -7% synergy
Springleaf Drum
10% of 29 decks +9% synergy
Nyx Lotus
10% of 29 decks +8% synergy
Everflowing Chalice
10% of 29 decks +5% synergy
Lands (38)
Dragonskull Summit
100% of 3 decks +94% synergy
Drowned Catacomb
83% of 6 decks +78% synergy
Sunken Hollow
83% of 6 decks +75% synergy
Tainted Isle
67% of 6 decks +64% synergy
Overgrown Tomb
62% of 13 decks +52% synergy
Command Tower
59% of 29 decks -13% synergy
Woodland Cemetery
54% of 13 decks +49% synergy
Underground Sea
50% of 6 decks +47% synergy
Bountiful Promenade
50% of 10 decks +45% synergy
Watery Grave
50% of 6 decks +39% synergy
Sandsteppe Citadel
40% of 10 decks +37% synergy
Temple Garden
40% of 10 decks +31% synergy
Isolated Chapel
36% of 11 decks +31% synergy
Caves of Koilos
36% of 11 decks +30% synergy
Godless Shrine
36% of 11 decks +27% synergy
Deathcap Glade
33% of 12 decks +30% synergy
Indatha Triome
33% of 9 decks +30% synergy
Undergrowth Stadium
33% of 12 decks +28% synergy
Polluted Delta
31% of 29 decks +20% synergy
Verdant Catacombs
31% of 29 decks +19% synergy
Sunpetal Grove
30% of 10 decks +25% synergy
Vault of Champions
30% of 10 decks +24% synergy
Canopy Vista
30% of 10 decks +23% synergy
Marsh Flats
24% of 29 decks +12% synergy
Myriad Landscape
17% of 29 decks -4% synergy
Exotic Orchard
17% of 29 decks -16% synergy
Mana Confluence
14% of 29 decks +6% synergy
Windswept Heath
14% of 29 decks +3% synergy
Fabled Passage
14% of 29 decks +3% synergy
Terramorphic Expanse
14% of 29 decks -3% synergy
Evolving Wilds
14% of 29 decks -9% synergy
Reflecting Pool
10% of 29 decks +5% synergy
Cavern of Souls
10% of 29 decks +5% synergy
Prismatic Vista
10% of 29 decks +4% synergy
City of Brass
10% of 29 decks +2% synergy
Bloodstained Mire
10% of 29 decks +0% synergy
Misty Rainforest
10% of 29 decks -2% synergy
Path of Ancestry
10% of 29 decks -8% synergy