Mikaeus, the Unhallowed + Cauldron of Souls + Dross Scorpion + Ashnod's Altar

Mikaeus, the Unhallowed
Cauldron of Souls
Dross Scorpion
Ashnod's Altar

Requires
Mikaeus, the Unhallowed must be on the battlefield. Cauldron of Souls must be on the battlefield. Dross Scorpion must be on the battlefield. Ashnod's Altar must be on the battlefield.
Steps
  1. Activate Cauldron of Souls by tapping it, giving Dross Scorpion persist until end of turn.
  2. Activate Ashnod's Altar by sacrificing Dross Scorpion, adding cc.
  3. Dross Scorpion dies, triggering its ability, its undying ability and its persist ability.
  4. Resolve the first Dross Scorpion trigger, untapping Cauldron of Souls.
  5. Resolve the Dross Scorpion persist trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  6. Activate Ashnod's Altar by sacrificing Dross Scorpion, adding cc.
  7. Dross Scorpion dies, triggering its ability and its undying ability.
  8. Resolve the first Dross Scorpion trigger, untapping Cauldron of Souls.
  9. Resolve the second Dross Scorpion trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  10. Activate Ashnod's Altar by sacrificing Dross Scorpion, adding cc.
  11. Dross Scorpion dies, triggering its ability and its persist ability.
  12. Repeat from step 4.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Top Commanders (1)
Mikaeus, the Unhallowed
0.26% of 1156 decks 3 decks
Top Cards (10)
Triskelion
58% of 24 decks +58% synergy
Phyrexian Altar
58% of 24 decks +54% synergy
Blood Artist
50% of 24 decks +44% synergy
Solemn Simulacrum
50% of 24 decks +35% synergy
Pitiless Plunderer
46% of 24 decks +42% synergy
Gray Merchant of Asphodel
46% of 24 decks +41% synergy
Feed the Swarm
42% of 19 decks +33% synergy
Lightning Greaves
42% of 24 decks +16% synergy
Crypt Ghast
38% of 24 decks +35% synergy
Walking Ballista
38% of 24 decks +35% synergy
Creatures (50)
Cruel Celebrant
60% of 5 decks +58% synergy
Etherium Sculptor
60% of 5 decks +57% synergy
Mayhem Devil
50% of 6 decks +48% synergy
Viscera Seer
38% of 24 decks +32% synergy
Zulaport Cutthroat
38% of 24 decks +32% synergy
Yawgmoth, Thran Physician
35% of 23 decks +33% synergy
Carrion Feeder
33% of 24 decks +30% synergy
Illuminor Szeras
31% of 13 decks +30% synergy
Drivnod, Carnage Dominus
30% of 10 decks +28% synergy
Syr Konrad, the Grim
26% of 23 decks +22% synergy
Disciple of the Vault
25% of 24 decks +24% synergy
Reassembling Skeleton
25% of 24 decks +23% synergy
Myr Retriever
25% of 24 decks +23% synergy
Cauldron Familiar
22% of 23 decks +21% synergy
K'rrik, Son of Yawgmoth
22% of 23 decks +21% synergy
Ayara, First of Locthwain
22% of 23 decks +20% synergy
Puppeteer Clique
21% of 24 decks +20% synergy
Sidisi, Undead Vizier
21% of 24 decks +20% synergy
Gravecrawler
21% of 24 decks +19% synergy
Cryptic Trilobite
18% of 22 decks +18% synergy
Putrid Goblin
17% of 23 decks +17% synergy
Tatterkite
17% of 24 decks +17% synergy
Workhorse
17% of 24 decks +17% synergy
Arcbound Crusher
17% of 24 decks +16% synergy
Crystalline Crawler
17% of 24 decks +16% synergy
Pili-Pala
17% of 24 decks +16% synergy
Arcbound Ravager
17% of 24 decks +16% synergy
Hangarback Walker
17% of 24 decks +16% synergy
Steel Overseer
17% of 24 decks +15% synergy
Marionette Master
17% of 24 decks +15% synergy
Palladium Myr
17% of 24 decks +15% synergy
Grim Haruspex
17% of 24 decks +14% synergy
Plaguecrafter
17% of 24 decks +14% synergy
Academy Manufactor
17% of 18 decks +13% synergy
Burnished Hart
17% of 24 decks +12% synergy
Fain, the Broker
16% of 19 decks +15% synergy
Vito, Thorn of the Dusk Rose
14% of 21 decks +11% synergy
Chainbreaker
12% of 24 decks +12% synergy
Grim Poppet
12% of 24 decks +12% synergy
Pentavus
12% of 24 decks +12% synergy
Scarecrone
12% of 24 decks +12% synergy
Soldevi Adnate
12% of 24 decks +12% synergy
Magus of the Coffers
12% of 24 decks +12% synergy
Junk Diver
12% of 24 decks +12% synergy
Kokusho, the Evening Star
12% of 24 decks +11% synergy
Razaketh, the Foulblooded
12% of 24 decks +11% synergy
Pawn of Ulamog
12% of 24 decks +11% synergy
Butcher of Malakir
12% of 24 decks +11% synergy
Scrap Trawler
12% of 24 decks +10% synergy
Fleshbag Marauder
12% of 24 decks +10% synergy
Instants (11)
Vampiric Tutor
33% of 24 decks +23% synergy
Dark Ritual
33% of 24 decks +22% synergy
Village Rites
24% of 21 decks +18% synergy
Infernal Grasp
24% of 17 decks +19% synergy
Entomb
21% of 24 decks +17% synergy
Go for the Throat
17% of 24 decks +13% synergy
Malakir Rebirth
15% of 20 decks +10% synergy
Defile
13% of 23 decks +11% synergy
Costly Plunder
12% of 24 decks +12% synergy
Doom Blade
12% of 24 decks +11% synergy
Tragic Slip
12% of 24 decks +11% synergy
Sorceries (17)
Demonic Tutor
46% of 24 decks +34% synergy
Diabolic Tutor
29% of 24 decks +26% synergy
Toxic Deluge
29% of 24 decks +21% synergy
Their Name Is Death
23% of 13 decks +22% synergy
Buried Alive
21% of 24 decks +18% synergy
Reanimate
21% of 24 decks +13% synergy
Read the Bones
17% of 24 decks +12% synergy
Diabolic Intent
17% of 24 decks +12% synergy
Damnation
17% of 24 decks +12% synergy
Night's Whisper
17% of 24 decks +12% synergy
Victimize
17% of 24 decks +11% synergy
Mutilate
12% of 24 decks +11% synergy
Grim Tutor
12% of 24 decks +10% synergy
Exsanguinate
12% of 24 decks +10% synergy
Torment of Hailfire
12% of 24 decks +10% synergy
Living Death
12% of 24 decks +10% synergy
Sign in Blood
12% of 24 decks +7% synergy
Utility Artifacts (24)
Altar of Dementia
38% of 24 decks +34% synergy
Skullclamp
33% of 24 decks +21% synergy
Swiftfoot Boots
33% of 24 decks +5% synergy
Nim Deathmantle
29% of 24 decks +28% synergy
Krark-Clan Ironworks
29% of 24 decks +28% synergy
Bolas's Citadel
26% of 23 decks +21% synergy
Clock of Omens
25% of 24 decks +24% synergy
Blasting Station
21% of 24 decks +20% synergy
Trading Post
21% of 24 decks +19% synergy
Jet Medallion
21% of 24 decks +19% synergy
Panharmonicon
21% of 24 decks +17% synergy
Altar of the Brood
17% of 24 decks +15% synergy
Sensei's Divining Top
17% of 24 decks +10% synergy
Wayfarer's Bauble
17% of 24 decks +5% synergy
Witch's Oven
13% of 23 decks +12% synergy
Myr Turbine
12% of 24 decks +12% synergy
Animation Module
12% of 24 decks +12% synergy
Genesis Chamber
12% of 24 decks +12% synergy
Mirrorworks
12% of 24 decks +12% synergy
Thornbite Staff
12% of 24 decks +12% synergy
Mimic Vat
12% of 24 decks +11% synergy
Ichor Wellspring
12% of 24 decks +11% synergy
Unwinding Clock
12% of 24 decks +10% synergy
Expedition Map
12% of 24 decks +9% synergy
Enchantments (9)
Anointed Procession
60% of 5 decks +56% synergy
Grave Pact
29% of 24 decks +27% synergy
Black Market Connections
29% of 14 decks +23% synergy
Dictate of Erebos
25% of 24 decks +23% synergy
Phyrexian Arena
25% of 24 decks +18% synergy
Biotransference
23% of 13 decks +22% synergy
Black Market
21% of 24 decks +18% synergy
Animate Dead
21% of 24 decks +16% synergy
Necropotence
17% of 24 decks +14% synergy
Planeswalkers (1)
Liliana, Dreadhorde General
26% of 23 decks +24% synergy
Utility Lands (14)
Cabal Coffers
50% of 24 decks +44% synergy
Urborg, Tomb of Yawgmoth
38% of 24 decks +27% synergy
Vault of Whispers
29% of 24 decks +27% synergy
Phyrexian Tower
29% of 24 decks +25% synergy
Bojuka Bog
29% of 24 decks +13% synergy
Reliquary Tower
29% of 24 decks +1% synergy
Cabal Stronghold
25% of 24 decks +23% synergy
Castle Locthwain
22% of 23 decks +19% synergy
Inventors' Fair
21% of 24 decks +17% synergy
High Market
17% of 24 decks +13% synergy
Ancient Tomb
17% of 24 decks +6% synergy
Rogue's Passage
17% of 24 decks -2% synergy
Command Beacon
12% of 24 decks +8% synergy
Buried Ruin
12% of 24 decks +7% synergy
Mana Artifacts (13)
Sol Ring
75% of 24 decks -9% synergy
Arcane Signet
43% of 23 decks -27% synergy
Sceptre of Eternal Glory
31% of 13 decks +30% synergy
Liquimetal Torque
26% of 19 decks +22% synergy
Gilded Lotus
25% of 24 decks +21% synergy
Mind Stone
25% of 24 decks +7% synergy
Thran Dynamo
21% of 24 decks +16% synergy
Thought Vessel
21% of 24 decks +5% synergy
Hedron Archive
17% of 24 decks +14% synergy
Charcoal Diamond
17% of 24 decks +14% synergy
Commander's Sphere
17% of 24 decks +0% synergy
Nyx Lotus
13% of 23 decks +11% synergy
Fellwar Stone
12% of 24 decks -8% synergy
Lands (7)
Isolated Chapel
60% of 5 decks +54% synergy
Overgrown Tomb
60% of 5 decks +51% synergy
Blood Crypt
50% of 6 decks +41% synergy
Myriad Landscape
38% of 24 decks +16% synergy
Command Tower
38% of 24 decks -36% synergy
Polluted Delta
17% of 24 decks +6% synergy
Exotic Orchard
17% of 24 decks -18% synergy