Mikaeus, the Unhallowed
Altar of Dementia
The Reaper, King No More

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (The Reaper without a +1/+1 counter on it on the battlefield).

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing The Reaper.
2
When The Reaper dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3
When The Reaper enters the battlefield, it triggers, putting a -1/-1 counter on it.
4
Resolve the Altar of Dementia ability
5
Repeat.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite death triggers
Infinite mill
Infinite sacrifice triggers
Infinite self-mill
Infinite -1/-1 counters
Infinite recursion of non-Human creatures you control
Auntie Ool, Cursewretch
0.3%inclusion28 decks10.1K decks
The Reaper, King No More
0.5%inclusion15 decks3.28K decks
Top Commanders
Reaper King
0.0%inclusion2 decks7.97K decks
Eddie Brock
0.0%inclusion1 decks6.64K decks
Korvold, Fae-Cursed King
0.0%inclusion1 decks18.7K decks
New Cards
Sinister Gnarlbark
70%inclusion33 decks47 decks
68%synergy
Dread Tiller
68%inclusion32 decks47 decks
64%synergy
Village Pillagers
51%inclusion24 decks47 decks
49%synergy
Eirdu, Carrier of Dawn
50%inclusion1 decks2 decks
49%synergy
Harmonized Crescendo
50%inclusion1 decks2 decks
47%synergy
High Synergy Cards
Blowfly Infestation
87%inclusion41 decks47 decks
86%synergy
Hapatra, Vizier of Poisons
85%inclusion40 decks47 decks
84%synergy
Black Sun's Zenith
83%inclusion39 decks47 decks
81%synergy
Yawgmoth, Thran Physician
83%inclusion39 decks47 decks
80%synergy
The Scorpion God
77%inclusion36 decks47 decks
76%synergy
Nest of Scarabs
77%inclusion36 decks47 decks
76%synergy
Necroskitter
77%inclusion36 decks47 decks
76%synergy
Devoted Druid
72%inclusion34 decks47 decks
69%synergy
Massacre Girl, Known Killer
68%inclusion32 decks47 decks
66%synergy
Flourishing Defenses
66%inclusion31 decks47 decks
65%synergy
Top Cards
Ignoble Hierarch
87%inclusion41 decks47 decks
62%synergy
Assassin's Trophy
68%inclusion32 decks47 decks
37%synergy
Persist
64%inclusion30 decks47 decks
62%synergy
Everlasting Torment
62%inclusion29 decks47 decks
61%synergy
Obelisk Spider
60%inclusion28 decks47 decks
58%synergy
Kulrath Knight
55%inclusion26 decks47 decks
54%synergy
Maha, Its Feathers Night
55%inclusion26 decks47 decks
54%synergy
Goblin Bombardment
55%inclusion26 decks47 decks
50%synergy
Blood Artist
55%inclusion26 decks47 decks
44%synergy
Carnifex Demon
53%inclusion25 decks47 decks
53%synergy
Game Changers
Demonic Tutor
36%inclusion17 decks47 decks
17%synergy
Vampiric Tutor
28%inclusion13 decks47 decks
13%synergy
Worldly Tutor
26%inclusion12 decks47 decks
14%synergy
Ancient Tomb
17%inclusion8 decks47 decks
8%synergy
Necropotence
8.5%inclusion4 decks47 decks
3%synergy
Chrome Mox
8.5%inclusion4 decks47 decks
3%synergy
Opposition Agent
6.4%inclusion3 decks47 decks
1%synergy
The One Ring
6.4%inclusion3 decks47 decks
-2%synergy
Gamble
6.4%inclusion3 decks47 decks
-2%synergy
Jeska's Will
6.4%inclusion3 decks47 decks
-9%synergy
Creatures
Murderous Redcap
53%inclusion25 decks47 decks
52%synergy
Grumgully, the Generous
53%inclusion25 decks47 decks
51%synergy
Soul Snuffers
51%inclusion24 decks47 decks
51%synergy
Channeler Initiate
49%inclusion23 decks47 decks
48%synergy
Zulaport Cutthroat
49%inclusion23 decks47 decks
40%synergy
Birds of Paradise
49%inclusion23 decks47 decks
21%synergy
Persistent Constrictor
47%inclusion22 decks47 decks
46%synergy
Generous Patron
43%inclusion20 decks47 decks
42%synergy
Scuzzback Scrounger
40%inclusion17 decks43 decks
38%synergy
Wickerbough Elder
36%inclusion17 decks47 decks
36%synergy
Putrid Goblin
36%inclusion17 decks47 decks
35%synergy
Evolution Sage
36%inclusion17 decks47 decks
30%synergy
Viscera Seer
36%inclusion17 decks47 decks
28%synergy
Oft-Nabbed Goat
34%inclusion16 decks47 decks
32%synergy
Quillspike
30%inclusion14 decks47 decks
29%synergy
Dusk Urchins
30%inclusion14 decks47 decks
29%synergy
Dawnhand Dissident
30%inclusion14 decks47 decks
28%synergy
Glissa Sunslayer
30%inclusion14 decks47 decks
25%synergy
Skinrender
28%inclusion13 decks47 decks
27%synergy
Midnight Banshee
28%inclusion13 decks47 decks
27%synergy
Grim Poppet
26%inclusion12 decks47 decks
25%synergy
Delighted Halfling
26%inclusion12 decks47 decks
14%synergy
Spitting Dilophosaurus
23%inclusion11 decks47 decks
23%synergy
Warren Soultrader
23%inclusion11 decks47 decks
18%synergy
Bloom Tender
23%inclusion11 decks47 decks
15%synergy
Banewhip Punisher
21%inclusion10 decks47 decks
21%synergy
Puppeteer Clique
21%inclusion10 decks47 decks
20%synergy
Auntie Ool, Cursewretch
21%inclusion10 decks47 decks
20%synergy
Harbinger of Night
19%inclusion9 decks47 decks
19%synergy
Tree of Perdition
19%inclusion9 decks47 decks
18%synergy
Hexing Squelcher
19%inclusion9 decks47 decks
11%synergy
Carrion Feeder
17%inclusion8 decks47 decks
13%synergy
Morbid Opportunist
17%inclusion8 decks47 decks
10%synergy
Ammit Eternal
15%inclusion7 decks47 decks
15%synergy
Corrosive Mentor
15%inclusion7 decks47 decks
15%synergy
Walking Ballista
15%inclusion7 decks47 decks
12%synergy
Elves of Deep Shadow
15%inclusion7 decks47 decks
6%synergy
Llanowar Elves
15%inclusion7 decks47 decks
-5%synergy
Moonshadow
14%inclusion6 decks43 decks
13%synergy
Necrotic Ooze
13%inclusion6 decks47 decks
12%synergy
Deathrite Shaman
13%inclusion6 decks47 decks
2%synergy
Rendclaw Trow
11%inclusion5 decks47 decks
10%synergy
Geralf's Messenger
11%inclusion5 decks47 decks
10%synergy
Young Wolf
11%inclusion5 decks47 decks
10%synergy
Protean Hulk
11%inclusion5 decks47 decks
9%synergy
High Perfect Morcant
11%inclusion5 decks47 decks
8%synergy
Sephiroth, Fabled SOLDIER
11%inclusion5 decks47 decks
8%synergy
Formidable Speaker
11%inclusion5 decks47 decks
8%synergy
Cankerbloom
11%inclusion5 decks47 decks
6%synergy
Pitiless Plunderer
11%inclusion5 decks47 decks
2%synergy
Instants
Personify
50%inclusion1 decks2 decks
49%synergy
Terminate
43%inclusion20 decks47 decks
23%synergy
Heroic Intervention
34%inclusion16 decks47 decks
4%synergy
Deflecting Swat
32%inclusion15 decks47 decks
15%synergy
Dark Ritual
30%inclusion14 decks47 decks
5%synergy
Fire Covenant
28%inclusion13 decks47 decks
25%synergy
Malakir Rebirth
28%inclusion13 decks47 decks
20%synergy
Atomize
26%inclusion12 decks47 decks
22%synergy
Infernal Grasp
26%inclusion12 decks47 decks
18%synergy
Putrefy
26%inclusion12 decks47 decks
9%synergy
Beast Within
23%inclusion11 decks47 decks
-11%synergy
Grim Affliction
21%inclusion10 decks47 decks
21%synergy
Saw in Half
21%inclusion10 decks47 decks
17%synergy
Entomb
21%inclusion10 decks47 decks
14%synergy
Deadly Rollick
21%inclusion10 decks47 decks
8%synergy
Culling the Weak
17%inclusion8 decks47 decks
13%synergy
Noxious Revival
17%inclusion8 decks47 decks
12%synergy
Abrupt Decay
17%inclusion8 decks47 decks
8%synergy
Sudden Spoiling
13%inclusion6 decks47 decks
11%synergy
Burnt Offering
13%inclusion6 decks47 decks
11%synergy
Revitalizing Repast
13%inclusion6 decks47 decks
4%synergy
Fell the Profane
11%inclusion5 decks47 decks
2%synergy
Sacrifice
8.5%inclusion4 decks47 decks
7%synergy
Veil of Summer
8.5%inclusion4 decks47 decks
3%synergy
Chord of Calling
8.5%inclusion4 decks47 decks
3%synergy
Redirect Lightning
8.5%inclusion4 decks47 decks
2%synergy
Chaos Warp
8.5%inclusion4 decks47 decks
-21%synergy
Force of Vigor
6.4%inclusion3 decks47 decks
3%synergy
Untimely Malfunction
6.4%inclusion3 decks47 decks
-1%synergy
Sorceries
Reanimate
49%inclusion23 decks47 decks
30%synergy
Aberrant Return
32%inclusion15 decks47 decks
30%synergy
Toxic Deluge
32%inclusion15 decks47 decks
14%synergy
Nature's Lore
30%inclusion14 decks47 decks
-2%synergy
Eldritch Evolution
28%inclusion13 decks47 decks
23%synergy
Farseek
28%inclusion13 decks47 decks
-8%synergy
Diabolic Intent
26%inclusion12 decks47 decks
18%synergy
Three Visits
23%inclusion11 decks47 decks
-1%synergy
Incremental Blight
21%inclusion10 decks47 decks
21%synergy
Night's Whisper
19%inclusion9 decks47 decks
10%synergy
Soul Immolation
19%inclusion8 decks43 decks
17%synergy
Blasphemous Act
15%inclusion7 decks47 decks
-18%synergy
Darkness Descends
13%inclusion6 decks45 decks
13%synergy
Eventide's Shadow
13%inclusion6 decks47 decks
11%synergy
Buried Alive
13%inclusion6 decks47 decks
7%synergy
Insatiable Avarice
11%inclusion5 decks47 decks
8%synergy
Chain Reaction
11%inclusion5 decks47 decks
7%synergy
Victimize
11%inclusion5 decks47 decks
-2%synergy
Rampant Growth
11%inclusion5 decks47 decks
-22%synergy
Cultivate
11%inclusion5 decks47 decks
-32%synergy
Bogslither's Embrace
9.3%inclusion4 decks43 decks
9%synergy
Molten Duplication
8.5%inclusion4 decks47 decks
7%synergy
Damnation
8.5%inclusion4 decks47 decks
2%synergy
Burning Curiosity
6.4%inclusion3 decks47 decks
5%synergy
Lively Dirge
6.4%inclusion3 decks47 decks
5%synergy
Profane Tutor
6.4%inclusion3 decks47 decks
4%synergy
Grim Tutor
6.4%inclusion3 decks47 decks
2%synergy
Nature's Rhythm
6.4%inclusion3 decks47 decks
2%synergy
Finale of Devastation
6.4%inclusion3 decks47 decks
-1%synergy
Culling Ritual
6.4%inclusion3 decks47 decks
-4%synergy
Faithless Looting
6.4%inclusion3 decks47 decks
-9%synergy
Kodama's Reach
6.4%inclusion3 decks47 decks
-21%synergy
Utility Artifacts
Phyrexian Altar
53%inclusion25 decks47 decks
50%synergy
Ashnod's Altar
40%inclusion19 decks47 decks
34%synergy
Contagion Clasp
30%inclusion14 decks47 decks
29%synergy
Skullclamp
21%inclusion10 decks47 decks
10%synergy
Contagion Engine
19%inclusion9 decks47 decks
18%synergy
Chimil, the Inner Sun
13%inclusion6 decks47 decks
11%synergy
Birthing Pod
13%inclusion6 decks47 decks
11%synergy
The Great Henge
13%inclusion6 decks47 decks
3%synergy
Cauldron of Souls
11%inclusion5 decks47 decks
10%synergy
Blasting Station
11%inclusion5 decks47 decks
10%synergy
Conjurer's Closet
11%inclusion5 decks47 decks
8%synergy
Wishclaw Talisman
11%inclusion5 decks47 decks
5%synergy
Lightning Greaves
11%inclusion5 decks47 decks
-14%synergy
Luxior, Giada's Gift
6.4%inclusion3 decks47 decks
6%synergy
Enchantments
Grave Venerations
49%inclusion23 decks47 decks
47%synergy
Rhythm of the Wild
38%inclusion18 decks47 decks
17%synergy
All Will Be One
34%inclusion16 decks47 decks
32%synergy
Crumbling Ashes
32%inclusion15 decks47 decks
31%synergy
Bastion of Remembrance
26%inclusion12 decks47 decks
19%synergy
Animate Dead
21%inclusion10 decks47 decks
12%synergy
The Meathook Massacre
17%inclusion8 decks47 decks
12%synergy
Puca's Covenant
15%inclusion7 decks47 decks
14%synergy
Innkeeper's Talent
15%inclusion7 decks47 decks
11%synergy
Lasting Tarfire
11%inclusion5 decks47 decks
9%synergy
Grave Pact
11%inclusion5 decks47 decks
6%synergy
Black Market Connections
11%inclusion5 decks47 decks
-1%synergy
Thran Vigil
8.5%inclusion4 decks47 decks
8%synergy
Sylvan Library
8.5%inclusion4 decks47 decks
-1%synergy
Boggart Mischief
6.4%inclusion3 decks47 decks
6%synergy
Nowhere to Run
6.4%inclusion3 decks47 decks
5%synergy
Funeral Room // Awakening Hall
6.4%inclusion3 decks47 decks
5%synergy
Dictate of Erebos
6.4%inclusion3 decks47 decks
3%synergy
Phyrexian Reclamation
6.4%inclusion3 decks47 decks
3%synergy
Ripples of Undeath
6.4%inclusion3 decks47 decks
2%synergy
Guardian Project
6.4%inclusion3 decks47 decks
-2%synergy
Impact Tremors
6.4%inclusion3 decks47 decks
-3%synergy
Planeswalkers
Vraska, Betrayal's Sting
23%inclusion11 decks47 decks
21%synergy
Utility Lands
Nesting Grounds
53%inclusion25 decks47 decks
51%synergy
Urborg, Tomb of Yawgmoth
38%inclusion18 decks47 decks
29%synergy
Yavimaya, Cradle of Growth
34%inclusion16 decks47 decks
25%synergy
Shifting Woodland
21%inclusion10 decks47 decks
14%synergy
Phyrexian Tower
21%inclusion10 decks47 decks
12%synergy
Boseiju, Who Endures
19%inclusion9 decks47 decks
0%synergy
Ifnir Deadlands
17%inclusion8 decks47 decks
16%synergy
Karn's Bastion
17%inclusion8 decks47 decks
12%synergy
Reliquary Tower
17%inclusion8 decks47 decks
-13%synergy
Bojuka Bog
13%inclusion6 decks47 decks
-17%synergy
Takenuma, Abandoned Mire
11%inclusion5 decks47 decks
2%synergy
Cabal Coffers
8.5%inclusion4 decks47 decks
-1%synergy
Volrath's Stronghold
6.4%inclusion3 decks47 decks
5%synergy
Mana Artifacts
Arcane Signet
91%inclusion43 decks47 decks
19%synergy
Sol Ring
91%inclusion43 decks47 decks
8%synergy
Wickersmith's Tools
34%inclusion16 decks47 decks
33%synergy
Talisman of Resilience
21%inclusion10 decks47 decks
9%synergy
Fellwar Stone
19%inclusion9 decks47 decks
-1%synergy
Talisman of Indulgence
19%inclusion9 decks47 decks
-9%synergy
The Soul Stone
17%inclusion8 decks47 decks
13%synergy
Golgari Signet
11%inclusion5 decks47 decks
1%synergy
Talisman of Impulse
11%inclusion5 decks47 decks
0%synergy
Rakdos Signet
8.5%inclusion4 decks47 decks
-16%synergy
Staff of Compleation
6.4%inclusion3 decks47 decks
5%synergy
Lotus Petal
6.4%inclusion3 decks47 decks
-1%synergy
Thought Vessel
6.4%inclusion3 decks47 decks
-11%synergy
Lands
Command Tower
94%inclusion44 decks47 decks
19%synergy
Blood Crypt
79%inclusion37 decks47 decks
41%synergy
Overgrown Tomb
77%inclusion36 decks47 decks
36%synergy
Stomping Ground
72%inclusion34 decks47 decks
31%synergy
Wooded Foothills
57%inclusion27 decks47 decks
47%synergy
Verdant Catacombs
55%inclusion26 decks47 decks
44%synergy
Woodland Cemetery
55%inclusion26 decks47 decks
23%synergy
Bloodstained Mire
53%inclusion25 decks47 decks
42%synergy
Undergrowth Stadium
51%inclusion24 decks47 decks
28%synergy
Exotic Orchard
51%inclusion24 decks47 decks
15%synergy
Smoldering Marsh
47%inclusion22 decks47 decks
13%synergy
Dragonskull Summit
47%inclusion22 decks47 decks
12%synergy
Llanowar Wastes
45%inclusion21 decks47 decks
18%synergy
Rootbound Crag
45%inclusion21 decks47 decks
17%synergy
Spire Garden
43%inclusion20 decks47 decks
21%synergy
Luxury Suite
43%inclusion20 decks47 decks
19%synergy
Ziatora's Proving Ground
43%inclusion20 decks47 decks
16%synergy
Sulfurous Springs
40%inclusion19 decks47 decks
17%synergy
Cinder Glade
40%inclusion19 decks47 decks
2%synergy
Vernal Fen
38%inclusion18 decks47 decks
29%synergy
Karplusan Forest
36%inclusion17 decks47 decks
16%synergy
Fabled Passage
32%inclusion15 decks47 decks
23%synergy
Savage Lands
28%inclusion13 decks47 decks
6%synergy
City of Brass
21%inclusion10 decks47 decks
14%synergy
Deathcap Glade
21%inclusion10 decks47 decks
8%synergy
Haunted Ridge
21%inclusion10 decks47 decks
5%synergy
Path of Ancestry
21%inclusion10 decks47 decks
-1%synergy
Marsh Flats
19%inclusion9 decks47 decks
9%synergy
Evolving Wilds
19%inclusion9 decks47 decks
-2%synergy
Rockfall Vale
19%inclusion9 decks47 decks
-2%synergy
Mana Confluence
17%inclusion8 decks47 decks
10%synergy
Underground Mortuary
17%inclusion8 decks47 decks
4%synergy
Scalding Tarn
15%inclusion7 decks47 decks
4%synergy
Windswept Heath
15%inclusion7 decks47 decks
4%synergy
Polluted Delta
15%inclusion7 decks47 decks
3%synergy
Twilight Mire
15%inclusion7 decks47 decks
2%synergy
Terramorphic Expanse
15%inclusion7 decks47 decks
0%synergy
Riveteers Overlook
13%inclusion6 decks47 decks
11%synergy
Prismatic Vista
13%inclusion6 decks47 decks
8%synergy
Wastewood Verge
13%inclusion6 decks47 decks
5%synergy
Thornspire Verge
13%inclusion6 decks47 decks
4%synergy
Raucous Theater
13%inclusion6 decks47 decks
3%synergy
Misty Rainforest
13%inclusion6 decks47 decks
1%synergy
Forbidden Orchard
11%inclusion5 decks47 decks
9%synergy
Reflecting Pool
11%inclusion5 decks47 decks
5%synergy
Graven Cairns
11%inclusion5 decks47 decks
1%synergy
Commercial District
11%inclusion5 decks47 decks
1%synergy
Twisted Landscape
11%inclusion5 decks47 decks
1%synergy
Arid Mesa
11%inclusion5 decks47 decks
0%synergy
Blazemire Verge
11%inclusion5 decks47 decks
0%synergy