Retribution of the Ancients + Phyrexian Altar + Sightless Ghoul

Retribution of the Ancients
Phyrexian Altar
Sightless Ghoul

Requires
Retribution of the Ancients must be on the battlefield. Phyrexian Altar must be on the battlefield. Sightless Ghoul must be on the battlefield. Sightless Ghoul has no +1/+1 counters on it.
Steps
  1. Activate Phyrexian Altar by sacrificing Sightless Ghoul, adding b.
  2. Sightless 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 Sightless Ghoul, giving any creature -1/-1 until end of turn.
  4. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Reduce any number of target creatures' toughness to zero.

Top Commanders (3)
Yawgmoth, Thran Physician
0.11% of 5553 decks 6 decks
Elas il-Kor, Sadistic Pilgrim
0.05% of 6179 decks 3 decks
Ghave, Guru of Spores
0.03% of 6160 decks 2 decks
High Synergy Cards (2)
Strangleroot Geist
100% of 4 decks +100% synergy
Evernight Shade
86% of 14 decks +86% synergy
Top Cards (10)
Pitiless Plunderer
79% of 14 decks +75% synergy
Ashnod's Altar
71% of 14 decks +64% synergy
Butcher Ghoul
64% of 14 decks +64% synergy
Geralf's Messenger
64% of 14 decks +64% synergy
Gravecrawler
64% of 14 decks +63% synergy
Mikaeus, the Unhallowed
57% of 14 decks +56% synergy
Viscera Seer
57% of 14 decks +52% synergy
Zulaport Cutthroat
57% of 14 decks +52% synergy
Dark Ritual
57% of 14 decks +46% synergy
Putrid Goblin
50% of 14 decks +50% synergy
Creatures (26)
Vorapede
75% of 4 decks +75% synergy
Young Wolf
75% of 4 decks +75% synergy
Twilight Shepherd
50% of 6 decks +50% synergy
Pawn of Ulamog
50% of 14 decks +49% synergy
Reassembling Skeleton
50% of 14 decks +48% synergy
Blood Artist
50% of 14 decks +44% synergy
Shambling Ghast
43% of 14 decks +42% synergy
Deathgreeter
36% of 14 decks +35% synergy
Grim Haruspex
36% of 14 decks +33% synergy
Gray Merchant of Asphodel
36% of 14 decks +31% synergy
Lesser Masticore
29% of 14 decks +28% synergy
Nether Traitor
29% of 14 decks +28% synergy
Puppeteer Clique
29% of 14 decks +28% synergy
Bloodghast
29% of 14 decks +28% synergy
Carrion Feeder
29% of 14 decks +26% synergy
Cult Conscript
25% of 12 decks +25% synergy
Lingering Tormentor
21% of 14 decks +21% synergy
Dross Harvester
21% of 14 decks +21% synergy
Myr Sire
21% of 14 decks +21% synergy
Persistent Specimen
21% of 14 decks +21% synergy
Sifter of Skulls
21% of 14 decks +21% synergy
Ophiomancer
21% of 14 decks +20% synergy
Ayara, First of Locthwain
21% of 14 decks +19% synergy
Fleshbag Marauder
21% of 14 decks +19% synergy
Walking Ballista
21% of 14 decks +19% synergy
Plaguecrafter
21% of 14 decks +19% synergy
Instants (9)
Vampiric Tutor
50% of 14 decks +40% synergy
Swords to Plowshares
50% of 6 decks +22% synergy
Village Rites
43% of 14 decks +37% synergy
Malakir Rebirth
36% of 14 decks +31% synergy
Deadly Rollick
36% of 14 decks +31% synergy
Deadly Dispute
29% of 14 decks +23% synergy
Hagra Mauling
21% of 14 decks +20% synergy
Culling the Weak
21% of 14 decks +20% synergy
Tragic Slip
21% of 14 decks +19% synergy
Sorceries (12)
Farseek
75% of 4 decks +59% synergy
Rampant Growth
75% of 4 decks +58% synergy
Sign in Blood
36% of 14 decks +30% synergy
Demonic Tutor
36% of 14 decks +24% synergy
Unearth
29% of 14 decks +27% synergy
Diabolic Tutor
29% of 14 decks +25% synergy
Reanimate
29% of 14 decks +21% synergy
Final Parting
21% of 14 decks +20% synergy
Agadeem's Awakening
21% of 14 decks +19% synergy
Read the Bones
21% of 14 decks +17% synergy
Victimize
21% of 14 decks +16% synergy
Feed the Swarm
21% of 14 decks +12% synergy
Utility Artifacts (9)
Bolas's Citadel
50% of 14 decks +45% synergy
Skullclamp
50% of 14 decks +37% synergy
Cauldron of Souls
29% of 14 decks +28% synergy
Sensei's Divining Top
29% of 14 decks +22% synergy
Swiftfoot Boots
29% of 14 decks +0% synergy
Desecrated Tomb
21% of 14 decks +21% synergy
Jet Medallion
21% of 14 decks +19% synergy
Expedition Map
21% of 14 decks +18% synergy
Lightning Greaves
21% of 14 decks -4% synergy
Enchantments (11)
Solemnity
50% of 6 decks +50% synergy
Bastion of Remembrance
50% of 14 decks +47% synergy
Thran Vigil
40% of 10 decks +40% synergy
Nest of Scarabs
36% of 14 decks +35% synergy
Black Market
29% of 14 decks +26% synergy
The Meathook Massacre
29% of 14 decks +26% synergy
Phyrexian Arena
29% of 14 decks +21% synergy
Agent of the Iron Throne
23% of 13 decks +22% synergy
Black Market Connections
23% of 13 decks +17% synergy
Blight Mound
21% of 14 decks +21% synergy
Grave Pact
21% of 14 decks +19% synergy
Utility Lands (12)
Cabal Coffers
50% of 14 decks +44% synergy
Phyrexian Tower
43% of 14 decks +39% synergy
Urborg, Tomb of Yawgmoth
43% of 14 decks +32% synergy
Ancient Tomb
36% of 14 decks +25% synergy
Reliquary Tower
36% of 14 decks +7% synergy
Witch's Cottage
29% of 14 decks +27% synergy
Nykthos, Shrine to Nyx
29% of 14 decks +23% synergy
Volrath's Stronghold
21% of 14 decks +21% synergy
Cabal Stronghold
21% of 14 decks +19% synergy
Thespian's Stage
21% of 14 decks +19% synergy
Karn's Bastion
21% of 14 decks +16% synergy
Bojuka Bog
21% of 14 decks +6% synergy
Mana Artifacts (11)
Sol Ring
93% of 14 decks +9% synergy
Arcane Signet
71% of 14 decks +1% synergy
Marble Diamond
50% of 6 decks +48% synergy
Energy Refractor
43% of 7 decks +43% synergy
Charcoal Diamond
29% of 14 decks +25% synergy
Everflowing Chalice
29% of 14 decks +24% synergy
Commander's Sphere
29% of 14 decks +12% synergy
Fellwar Stone
29% of 14 decks +8% synergy
Prismatic Lens
21% of 14 decks +20% synergy
Thought Vessel
21% of 14 decks +6% synergy
Mind Stone
21% of 14 decks +3% synergy
Lands (3)
Caves of Koilos
50% of 6 decks +44% synergy
Command Tower
43% of 14 decks -30% synergy
Evolving Wilds
21% of 14 decks -0% synergy