Mikaeus, the Unhallowed + Rise of the Dark Realms + Ashnod's Altar + Blood Pet + Timeless Witness

Mikaeus, the Unhallowed
Rise of the Dark Realms
Ashnod's Altar
Blood Pet
Timeless Witness

Requires
Mikaeus, the Unhallowed must be on the battlefield. Rise of the Dark Realms must be in hand. Ashnod's Altar must be on the battlefield. Blood Pet must be on the battlefield. Timeless Witness must be on the battlefield. Blood Pet does not have a +1/+1 counter on it. You control another nontoken non-Human creature that does not have a +1/+1 counter on it.
Steps
  1. Activate Blood Pet by sacrificing it, adding .
  2. When Blood Pet dies, its undying ability triggers, returning it to the battlefield from your graveyard with a +1/+1 counter on it.
  3. Activate Blood Pet by sacrificing it, adding .
  4. Activate Ashnod's Altar twice by sacrificing Timeless Witness and another nontoken non-Human creature, adding .
  5. When the non-Human creature dies, its undying ability triggers, returning it to the battlefield from your graveyard with a +1/+1 counter on it.
  6. Activate Ashnod's Altar twice by sacrificing Mikaeus and the non-Human creature, adding .
  7. Cast Rise of the Dark Realms by paying 7, putting all creature cards from all graveyards onto the battlefield under your control.
  8. When Timeless Witness enters the battlefield, it triggers, returning Living Death to your hand from your graveyard.
  9. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite magecraft triggers. Infinite sacrifice triggers. Infinite storm count.

Meren of Clan Nel Toth
0.01% of 14168 decks 1 decks
Korvold, Fae-Cursed King
0.01% of 15204 decks 1 decks
Creatures
Scuzzback Marauders
100% of 1 decks +100% synergy
Furystoke Giant
100% of 1 decks +100% synergy
Burning-Tree Emissary
100% of 1 decks +100% synergy
Thunderblust
100% of 1 decks +100% synergy
Wild Cantor
100% of 1 decks +100% synergy
Olivia, Mobilized for War
100% of 1 decks +100% synergy
Thermopod
100% of 1 decks +100% synergy
Putrid Goblin
100% of 2 decks +100% synergy
Murderous Redcap
100% of 1 decks +100% synergy
Reckless Barbarian
100% of 1 decks +99% synergy
Grumgully, the Generous
100% of 1 decks +99% synergy
Tinder Wall
100% of 1 decks +99% synergy
Impulsive Pilferer
100% of 1 decks +99% synergy
Skirk Prospector
100% of 1 decks +99% synergy
Ignoble Hierarch
100% of 1 decks +97% synergy
Cankerbloom
100% of 1 decks +96% synergy
Viscera Seer
100% of 2 decks +95% synergy
Zulaport Cutthroat
100% of 2 decks +95% synergy
Eternal Witness
100% of 2 decks +90% synergy
Rendclaw Trow
50% of 2 decks +50% synergy
Lingering Tormentor
50% of 2 decks +50% synergy
Blood Vassal
50% of 2 decks +50% synergy
Aerie Ouphes
50% of 2 decks +50% synergy
Heart Warden
50% of 2 decks +50% synergy
Gleaming Barrier
50% of 2 decks +50% synergy
Lesser Masticore
50% of 2 decks +50% synergy
Melira, Sylvok Outcast
50% of 2 decks +50% synergy
Basal Sliver
50% of 2 decks +50% synergy
Savra, Queen of the Golgari
50% of 2 decks +50% synergy
Priest of Gix
50% of 2 decks +50% synergy
Bloodspore Thrinax
50% of 2 decks +50% synergy
Sling-Gang Lieutenant
50% of 2 decks +50% synergy
Veteran Explorer
50% of 2 decks +50% synergy
Fell Stinger
50% of 2 decks +49% synergy
Shambling Ghast
50% of 2 decks +49% synergy
Erebos, Bleak-Hearted
50% of 2 decks +49% synergy
Sifter of Skulls
50% of 2 decks +49% synergy
Woodfall Primus
50% of 2 decks +49% synergy
Puppeteer Clique
50% of 2 decks +49% synergy
Caustic Caterpillar
50% of 2 decks +49% synergy
Renata, Called to the Hunt
50% of 2 decks +49% synergy
Sidisi, Undead Vizier
50% of 2 decks +49% synergy
Massacre Girl
50% of 2 decks +49% synergy
Grave Titan
50% of 2 decks +49% synergy
Poison-Tip Archer
50% of 2 decks +49% synergy
Falkenrath Noble
50% of 2 decks +49% synergy
Pawn of Ulamog
50% of 2 decks +49% synergy
Hornet Queen
50% of 2 decks +49% synergy
Spore Frog
50% of 2 decks +49% synergy
Woe Strider
50% of 2 decks +49% synergy
Instants
Fanatical Offering
100% of 1 decks +99% synergy
Shared Summons
50% of 2 decks +49% synergy
Putrefy
50% of 2 decks +47% synergy
Harrow
50% of 2 decks +45% synergy
Deadly Dispute
50% of 2 decks +44% synergy
Beast Within
50% of 2 decks +32% synergy
Sorceries
Razaketh's Rite
100% of 2 decks +100% synergy
Diabolic Tutor
100% of 2 decks +97% synergy
Twilight's Call
50% of 2 decks +50% synergy
Worm Harvest
50% of 2 decks +50% synergy
Killing Wave
50% of 2 decks +50% synergy
Finale of Eternity
50% of 2 decks +50% synergy
Mastermind's Acquisition
50% of 2 decks +50% synergy
Primal Command
50% of 2 decks +50% synergy
Maelstrom Pulse
50% of 2 decks +50% synergy
Creeping Renaissance
50% of 2 decks +50% synergy
Collective Voyage
50% of 2 decks +50% synergy
Dig Up
50% of 2 decks +49% synergy
Profane Tutor
50% of 2 decks +48% synergy
Culling Ritual
50% of 2 decks +48% synergy
Living Death
50% of 2 decks +47% synergy
Feed the Swarm
50% of 2 decks +41% synergy
Kodama's Reach
50% of 2 decks +35% synergy
Cultivate
50% of 2 decks +28% synergy
Utility Artifacts
Phyrexian Altar
100% of 2 decks +96% synergy
Blasting Station
50% of 2 decks +49% synergy
Nim Deathmantle
50% of 2 decks +49% synergy
Howling Mine
50% of 2 decks +48% synergy
The Great Henge
50% of 2 decks +45% synergy
Skullclamp
50% of 2 decks +37% synergy
Enchantments
Goblin Bombardment
100% of 1 decks +97% synergy
Rhythm of the Wild
100% of 1 decks +95% synergy
Mortuary
50% of 2 decks +50% synergy
Thran Vigil
50% of 2 decks +50% synergy
Master Chef
50% of 2 decks +49% synergy
Rites of Flourishing
50% of 2 decks +49% synergy
Vampiric Rites
50% of 2 decks +49% synergy
Moldervine Reclamation
50% of 2 decks +48% synergy
Greater Good
50% of 2 decks +48% synergy
The Meathook Massacre
50% of 2 decks +47% synergy
Phyrexian Arena
50% of 2 decks +43% synergy
Utility Lands
Fungal Reaches
100% of 1 decks +100% synergy
Dwarven Ruins
100% of 1 decks +100% synergy
Molten Slagheap
100% of 1 decks +100% synergy
The Dross Pits
100% of 1 decks +100% synergy
The Hunter Maze
100% of 1 decks +100% synergy
Hidden Necropolis
100% of 1 decks +99% synergy
Restless Cottage
100% of 1 decks +99% synergy
Hidden Nursery
100% of 1 decks +99% synergy
Phyrexian Tower
100% of 2 decks +96% synergy
Ebon Stronghold
50% of 2 decks +50% synergy
Havenwood Battleground
50% of 2 decks +50% synergy
Gingerbread Cabin
50% of 2 decks +49% synergy
Crystal Vein
50% of 2 decks +49% synergy
Oran-Rief, the Vastwood
50% of 2 decks +48% synergy
Mortuary Mire
50% of 2 decks +47% synergy
High Market
50% of 2 decks +47% synergy
Karn's Bastion
50% of 2 decks +45% synergy
Bojuka Bog
50% of 2 decks +34% synergy
Reliquary Tower
50% of 2 decks +21% synergy
Mana Artifacts
Sol Ring
100% of 2 decks +16% synergy
Talisman of Resilience
50% of 2 decks +48% synergy
Arcane Signet
50% of 2 decks -21% synergy
Lands
Darigaaz's Caldera
100% of 1 decks +100% synergy
Savage Lands
100% of 1 decks +98% synergy
Taiga
100% of 1 decks +97% synergy
Badlands
100% of 1 decks +97% synergy
Terramorphic Expanse
100% of 2 decks +84% synergy
Evolving Wilds
100% of 2 decks +79% synergy
Command Tower
100% of 2 decks +26% synergy
Ravaged Highlands
100% of 1 decks +100% synergy
Geothermal Crevice
100% of 1 decks +100% synergy
Timberland Ruins
50% of 2 decks +50% synergy
Bog Wreckage
50% of 2 decks +50% synergy
Mountain Valley
50% of 2 decks +49% synergy
Rocky Tar Pit
50% of 2 decks +49% synergy
Jund Panorama
50% of 2 decks +49% synergy
Blooming Marsh
50% of 2 decks +49% synergy
Thriving Grove
50% of 2 decks +49% synergy
Woodland Chasm
50% of 2 decks +49% synergy
Thriving Moor
50% of 2 decks +49% synergy
Nurturing Peatland
50% of 2 decks +49% synergy
Jungle Hollow
50% of 2 decks +48% synergy
Darkbore Pathway
50% of 2 decks +48% synergy
Riveteers Overlook
50% of 2 decks +48% synergy
Necroblossom Snarl
50% of 2 decks +48% synergy
Bayou
50% of 2 decks +47% synergy
Temple of Malady
50% of 2 decks +47% synergy
Llanowar Wastes
50% of 2 decks +45% synergy
Woodland Cemetery
50% of 2 decks +44% synergy
Fabled Passage
50% of 2 decks +41% synergy