Mikaeus, the Unhallowed
The Reaper, King No More
Yahenni, Undying Partisan

   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 Yahenni 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 Yahenni ability
5
Repeat.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite death triggers
Infinite sacrifice triggers
Infinite -1/-1 counters
Infinite recursion of non-Human creatures you control
Auntie Ool, Cursewretch
0.1%inclusion9 decks11.6K decks
The Reaper, King No More
0.1%inclusion3 decks3.73K decks
Top Commanders
Ramos, Dragon Engine
0.0%inclusion1 decks11K decks
New Cards
Eirdu, Carrier of Dawn
100%inclusion1 decks1 decks
99%synergy
Rhys, the Evermore
100%inclusion1 decks1 decks
99%synergy
Sinister Gnarlbark
77%inclusion10 decks13 decks
75%synergy
Village Pillagers
62%inclusion8 decks13 decks
60%synergy
Aberrant Return
46%inclusion6 decks13 decks
45%synergy
High Synergy Cards
Nest of Scarabs
85%inclusion11 decks13 decks
84%synergy
Blowfly Infestation
85%inclusion11 decks13 decks
84%synergy
Necroskitter
85%inclusion11 decks13 decks
84%synergy
Hapatra, Vizier of Poisons
85%inclusion11 decks13 decks
83%synergy
Obelisk Spider
85%inclusion11 decks13 decks
83%synergy
Massacre Girl, Known Killer
85%inclusion11 decks13 decks
83%synergy
The Scorpion God
77%inclusion10 decks13 decks
76%synergy
Everlasting Torment
77%inclusion10 decks13 decks
76%synergy
Black Sun's Zenith
77%inclusion10 decks13 decks
75%synergy
Soul Snuffers
69%inclusion9 decks13 decks
69%synergy
Top Cards
Ignoble Hierarch
77%inclusion10 decks13 decks
52%synergy
Devoted Druid
69%inclusion9 decks13 decks
66%synergy
Assassin's Trophy
69%inclusion9 decks13 decks
38%synergy
Crumbling Ashes
62%inclusion8 decks13 decks
61%synergy
Channeler Initiate
62%inclusion8 decks13 decks
61%synergy
Flourishing Defenses
62%inclusion8 decks13 decks
61%synergy
Persistent Constrictor
62%inclusion8 decks13 decks
60%synergy
Dusk Urchins
54%inclusion7 decks13 decks
53%synergy
Carnifex Demon
54%inclusion7 decks13 decks
53%synergy
Generous Patron
54%inclusion7 decks13 decks
53%synergy
Game Changers
Demonic Tutor
23%inclusion3 decks13 decks
4%synergy
Creatures
Kulrath Knight
54%inclusion7 decks13 decks
53%synergy
Evolution Sage
54%inclusion7 decks13 decks
47%synergy
Skinrender
46%inclusion6 decks13 decks
46%synergy
Wickerbough Elder
46%inclusion6 decks13 decks
46%synergy
Yawgmoth, Thran Physician
46%inclusion6 decks13 decks
43%synergy
Dread Tiller
46%inclusion6 decks13 decks
42%synergy
Grim Poppet
38%inclusion5 decks13 decks
38%synergy
Midnight Banshee
38%inclusion5 decks13 decks
38%synergy
Maha, Its Feathers Night
38%inclusion5 decks13 decks
37%synergy
Oft-Nabbed Goat
38%inclusion5 decks13 decks
37%synergy
Carrion Feeder
38%inclusion5 decks13 decks
34%synergy
Morbid Opportunist
38%inclusion5 decks13 decks
31%synergy
Quillspike
31%inclusion4 decks13 decks
30%synergy
Putrid Goblin
31%inclusion4 decks13 decks
30%synergy
Ferrafor, Young Yew
31%inclusion4 decks13 decks
30%synergy
Puppeteer Clique
31%inclusion4 decks13 decks
29%synergy
Scuzzback Scrounger
31%inclusion4 decks13 decks
29%synergy
Murderous Redcap
31%inclusion4 decks13 decks
29%synergy
Cankerbloom
31%inclusion4 decks13 decks
26%synergy
Viscera Seer
31%inclusion4 decks13 decks
23%synergy
Furystoke Giant
23%inclusion3 decks13 decks
23%synergy
Lingering Tormentor
23%inclusion3 decks13 decks
23%synergy
Rendclaw Trow
23%inclusion3 decks13 decks
23%synergy
Ammit Eternal
23%inclusion3 decks13 decks
23%synergy
Gev, Scaled Scorch
23%inclusion3 decks13 decks
23%synergy
Bristlebane Battler
23%inclusion3 decks13 decks
22%synergy
Dawnhand Dissident
23%inclusion3 decks13 decks
22%synergy
Grumgully, the Generous
23%inclusion3 decks13 decks
21%synergy
Meren of Clan Nel Toth
23%inclusion3 decks13 decks
19%synergy
Pitiless Plunderer
23%inclusion3 decks13 decks
15%synergy
Blood Artist
23%inclusion3 decks13 decks
12%synergy
Birds of Paradise
23%inclusion3 decks13 decks
-4%synergy
Warren Torchmaster
15%inclusion2 decks13 decks
15%synergy
High Perfect Morcant
15%inclusion2 decks13 decks
13%synergy
Gnarlbark Elm
7.7%inclusion1 decks13 decks
8%synergy
Brambleback Brute
7.7%inclusion1 decks13 decks
8%synergy
Sting-Slinger
7.7%inclusion1 decks13 decks
8%synergy
Grub, Storied Matriarch
7.7%inclusion1 decks13 decks
7%synergy
Shadow Urchin
7.7%inclusion1 decks13 decks
7%synergy
Moonshadow
7.7%inclusion1 decks13 decks
7%synergy
Mutable Explorer
7.7%inclusion1 decks13 decks
7%synergy
Eclipsed Boggart
7.7%inclusion1 decks13 decks
7%synergy
Auntie Ool, Cursewretch
7.7%inclusion1 decks13 decks
6%synergy
Virulent Emissary
7.7%inclusion1 decks13 decks
6%synergy
Twilight Diviner
7.7%inclusion1 decks13 decks
5%synergy
Chomping Changeling
7.7%inclusion1 decks13 decks
5%synergy
Instants
Terminate
46%inclusion6 decks13 decks
27%synergy
Heroic Intervention
38%inclusion5 decks13 decks
8%synergy
Grim Affliction
23%inclusion3 decks13 decks
22%synergy
Putrefy
23%inclusion3 decks13 decks
7%synergy
Dark Ritual
23%inclusion3 decks13 decks
-1%synergy
Blight Rot
7.7%inclusion1 decks13 decks
7%synergy
Sorceries
Persist
54%inclusion7 decks13 decks
52%synergy
Incremental Blight
38%inclusion5 decks13 decks
38%synergy
Three Visits
38%inclusion5 decks13 decks
14%synergy
Rampant Growth
38%inclusion5 decks13 decks
5%synergy
Farseek
38%inclusion5 decks13 decks
3%synergy
Darkness Descends
31%inclusion4 decks13 decks
30%synergy
Reanimate
31%inclusion4 decks13 decks
12%synergy
Nature's Lore
31%inclusion4 decks13 decks
-1%synergy
Cultivate
31%inclusion4 decks13 decks
-12%synergy
Bogslither's Embrace
23%inclusion3 decks13 decks
22%synergy
Toxic Deluge
23%inclusion3 decks13 decks
5%synergy
Eventide's Shadow
15%inclusion2 decks13 decks
14%synergy
Burning Curiosity
7.7%inclusion1 decks13 decks
7%synergy
Utility Artifacts
Cauldron of Souls
38%inclusion5 decks13 decks
38%synergy
Contagion Engine
38%inclusion5 decks13 decks
38%synergy
Contagion Clasp
38%inclusion5 decks13 decks
37%synergy
Phyrexian Altar
31%inclusion4 decks13 decks
27%synergy
Ashnod's Altar
31%inclusion4 decks13 decks
24%synergy
Altar of Dementia
23%inclusion3 decks13 decks
21%synergy
Skullclamp
23%inclusion3 decks13 decks
12%synergy
Enchantments
Puca's Covenant
38%inclusion5 decks13 decks
37%synergy
All Will Be One
38%inclusion5 decks13 decks
36%synergy
Goblin Bombardment
38%inclusion5 decks13 decks
33%synergy
Rhythm of the Wild
31%inclusion4 decks13 decks
9%synergy
Lasting Tarfire
23%inclusion3 decks13 decks
22%synergy
Grave Venerations
23%inclusion3 decks13 decks
21%synergy
Bastion of Remembrance
23%inclusion3 decks13 decks
16%synergy
Boggart Mischief
7.7%inclusion1 decks13 decks
7%synergy
Planeswalkers
Vraska, Betrayal's Sting
23%inclusion3 decks13 decks
21%synergy
Utility Lands
Nesting Grounds
69%inclusion9 decks13 decks
67%synergy
Reliquary Tower
38%inclusion5 decks13 decks
9%synergy
Karn's Bastion
31%inclusion4 decks13 decks
26%synergy
Ifnir Deadlands
23%inclusion3 decks13 decks
22%synergy
Mana Artifacts
Arcane Signet
69%inclusion9 decks13 decks
-3%synergy
Sol Ring
69%inclusion9 decks13 decks
-14%synergy
Wickersmith's Tools
31%inclusion4 decks13 decks
30%synergy
Lands
Command Tower
85%inclusion11 decks13 decks
10%synergy
Exotic Orchard
77%inclusion10 decks13 decks
40%synergy
Rootbound Crag
69%inclusion9 decks13 decks
41%synergy
Woodland Cemetery
69%inclusion9 decks13 decks
37%synergy
Path of Ancestry
62%inclusion8 decks13 decks
39%synergy
Smoldering Marsh
62%inclusion8 decks13 decks
28%synergy
Dragonskull Summit
62%inclusion8 decks13 decks
27%synergy
Blood Crypt
62%inclusion8 decks13 decks
24%synergy
Overgrown Tomb
62%inclusion8 decks13 decks
20%synergy
Savage Lands
54%inclusion7 decks13 decks
32%synergy
Cinder Glade
54%inclusion7 decks13 decks
16%synergy
Stomping Ground
54%inclusion7 decks13 decks
13%synergy
Riveteers Overlook
38%inclusion5 decks13 decks
37%synergy
Darkbore Pathway
38%inclusion5 decks13 decks
32%synergy
Vernal Fen
38%inclusion5 decks13 decks
29%synergy
Undergrowth Stadium
38%inclusion5 decks13 decks
15%synergy
Karplusan Forest
31%inclusion4 decks13 decks
11%synergy
Sulfurous Springs
31%inclusion4 decks13 decks
7%synergy
Ziatora's Proving Ground
31%inclusion4 decks13 decks
4%synergy
Llanowar Wastes
31%inclusion4 decks13 decks
4%synergy
Cragcrown Pathway
23%inclusion3 decks13 decks
16%synergy
Thornspire Verge
23%inclusion3 decks13 decks
14%synergy
Fabled Passage
23%inclusion3 decks13 decks
14%synergy
Wooded Foothills
23%inclusion3 decks13 decks
12%synergy
Gruul Turf
23%inclusion3 decks13 decks
9%synergy
Golgari Rot Farm
23%inclusion3 decks13 decks
6%synergy
Evolving Wilds
23%inclusion3 decks13 decks
2%synergy
Luxury Suite
23%inclusion3 decks13 decks
-1%synergy