Mikaeus, the Unhallowed + Retribution of the Ancients + Blood Vassal

Mikaeus, the Unhallowed
Retribution of the Ancients
Blood Vassal

Requires
All permanents on the battlefield. Blood Vassal does not have a +1/+1 counter on it.
Steps
  1. Activate Blood Vassal by sacrificing it, adding bb.
  2. Blood Vassal 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 the +1/+1 counter from Blood Vassal, targeting any creature.
  4. Repeat.
Results
Infinite black mana. Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Reduce any number of target creatures' toughness to zero.

Top Commanders (2)
Sidisi, Undead Vizier
0.20% of 500 decks 1 decks
Mikaeus, the Unhallowed
0.10% of 968 decks 1 decks
Creatures (45)
Dockside Chef
100% of 1 decks +95% synergy
Gravelighter
100% of 1 decks +95% synergy
Yawgmoth, Thran Physician
100% of 2 decks +93% synergy
Blood Pet
100% of 2 decks +91% synergy
Zulaport Cutthroat
100% of 2 decks +73% synergy
Thrull Surgeon
50% of 2 decks +50% synergy
Basal Sliver
50% of 2 decks +50% synergy
Baleful Ammit
50% of 2 decks +50% synergy
Wingrattle Scarecrow
50% of 2 decks +50% synergy
Carnifex Demon
50% of 2 decks +50% synergy
Tatterkite
50% of 2 decks +50% synergy
Dire Fleet Hoarder
50% of 2 decks +49% synergy
Festering Mummy
50% of 2 decks +49% synergy
Hex Parasite
50% of 2 decks +49% synergy
Putrid Goblin
50% of 2 decks +49% synergy
Tree of Perdition
50% of 2 decks +49% synergy
Tainted Adversary
50% of 2 decks +49% synergy
Vampire Hexmage
50% of 2 decks +49% synergy
Fume Spitter
50% of 2 decks +48% synergy
Plague Belcher
50% of 2 decks +48% synergy
Grief
50% of 2 decks +48% synergy
Bloodthrone Vampire
50% of 2 decks +48% synergy
Triskelion
50% of 2 decks +48% synergy
Apprentice Necromancer
50% of 2 decks +48% synergy
Gutterbones
50% of 2 decks +48% synergy
Walking Ballista
50% of 2 decks +47% synergy
Skullport Merchant
50% of 2 decks +47% synergy
Doom Whisperer
50% of 2 decks +47% synergy
Mindslicer
50% of 2 decks +45% synergy
Liliana, Heretical Healer
50% of 2 decks +44% synergy
Merciless Executioner
50% of 2 decks +43% synergy
Nether Traitor
50% of 2 decks +41% synergy
Gravecrawler
50% of 2 decks +41% synergy
Midnight Reaper
50% of 2 decks +40% synergy
Carrion Feeder
50% of 2 decks +39% synergy
Massacre Wurm
50% of 2 decks +38% synergy
Grim Haruspex
50% of 2 decks +36% synergy
Pitiless Plunderer
50% of 2 decks +36% synergy
Fleshbag Marauder
50% of 2 decks +34% synergy
Reassembling Skeleton
50% of 2 decks +33% synergy
Viscera Seer
50% of 2 decks +31% synergy
Dauthi Voidwalker
50% of 2 decks +30% synergy
Blood Artist
50% of 2 decks +21% synergy
Crypt Ghast
50% of 2 decks +7% synergy
Gray Merchant of Asphodel
50% of 2 decks -5% synergy
Instants (14)
Hero's Downfall
100% of 2 decks +89% synergy
Infernal Grasp
100% of 2 decks +68% synergy
Dark Ritual
100% of 2 decks +37% synergy
Heartless Act
50% of 2 decks +47% synergy
Force of Despair
50% of 2 decks +39% synergy
Sudden Spoiling
50% of 2 decks +39% synergy
Entomb
50% of 2 decks +38% synergy
Culling the Weak
50% of 2 decks +38% synergy
Imp's Mischief
50% of 2 decks +37% synergy
Soul Shatter
50% of 2 decks +35% synergy
Cabal Ritual
50% of 2 decks +32% synergy
Go for the Throat
50% of 2 decks +26% synergy
Vampiric Tutor
50% of 2 decks +23% synergy
Defile
50% of 2 decks +10% synergy
Sorceries (19)
Feed the Swarm
100% of 2 decks +43% synergy
Behold the Beyond
50% of 2 decks +49% synergy
Finale of Eternity
50% of 2 decks +48% synergy
Dead of Winter
50% of 2 decks +48% synergy
Fraying Omnipotence
50% of 2 decks +47% synergy
Persist
50% of 2 decks +45% synergy
Unmarked Grave
50% of 2 decks +45% synergy
Rise of the Dark Realms
50% of 2 decks +42% synergy
Profane Tutor
50% of 2 decks +42% synergy
Living Death
50% of 2 decks +37% synergy
Diabolic Intent
50% of 2 decks +35% synergy
Grim Tutor
50% of 2 decks +34% synergy
Torment of Hailfire
50% of 2 decks +29% synergy
Night's Whisper
50% of 2 decks +25% synergy
Mutilate
50% of 2 decks +25% synergy
Damnation
50% of 2 decks +24% synergy
Read the Bones
50% of 2 decks +24% synergy
Demonic Tutor
50% of 2 decks +16% synergy
Sign in Blood
50% of 2 decks +7% synergy
Utility Artifacts (8)
Ashnod's Altar
100% of 2 decks +81% synergy
Moonsilver Key
50% of 2 decks +48% synergy
Altar of the Brood
50% of 2 decks +47% synergy
Altar of Dementia
50% of 2 decks +43% synergy
Phyrexian Altar
50% of 2 decks +38% synergy
Swiftfoot Boots
50% of 2 decks +17% synergy
Lightning Greaves
50% of 2 decks +17% synergy
Jet Medallion
50% of 2 decks +12% synergy
Enchantments (9)
Attrition
50% of 2 decks +47% synergy
Wound Reflection
50% of 2 decks +46% synergy
Dance of the Dead
50% of 2 decks +45% synergy
Vampiric Rites
50% of 2 decks +45% synergy
Dark Prophecy
50% of 2 decks +44% synergy
Grave Pact
50% of 2 decks +37% synergy
Dictate of Erebos
50% of 2 decks +36% synergy
Animate Dead
50% of 2 decks +31% synergy
Phyrexian Arena
50% of 2 decks +14% synergy
Planeswalkers (2)
Liliana, Dreadhorde General
50% of 2 decks +39% synergy
Liliana of the Dark Realms
50% of 2 decks +38% synergy
Utility Lands (8)
Cabal Coffers
100% of 2 decks +42% synergy
Dark Depths
50% of 2 decks +49% synergy
Volrath's Stronghold
50% of 2 decks +45% synergy
High Market
50% of 2 decks +43% synergy
Barren Moor
50% of 2 decks +34% synergy
Phyrexian Tower
50% of 2 decks +29% synergy
Urborg, Tomb of Yawgmoth
50% of 2 decks +9% synergy
Cabal Stronghold
50% of 2 decks +6% synergy
Mana Artifacts (10)
Thought Vessel
100% of 2 decks +73% synergy
Charcoal Diamond
100% of 2 decks +72% synergy
Mind Stone
100% of 2 decks +62% synergy
Arcane Signet
100% of 2 decks +39% synergy
Sol Ring
100% of 2 decks +13% synergy
Sol Talisman
50% of 2 decks +49% synergy
Star Compass
50% of 2 decks +48% synergy
Coldsteel Heart
50% of 2 decks +48% synergy
Everflowing Chalice
50% of 2 decks +41% synergy
Jeweled Lotus
50% of 2 decks +37% synergy