Eirdu, Carrier of Dawn
Mighty Mutanimals
Altar of Dementia

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield).
You control another nontoken creature that doesn't have a -1/-1 counter on it and that has base toughness 2 or greater.

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing another nontoken creature that doesn't have a -1/-1 counter on it.
2
When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3
When the creature enters, Mighty Mutanimals triggers, putting a +1/+1 counter on the creature.
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
Eirdu, Carrier of Dawn
0.1%inclusion5 decks4.21K decks
Celes, Rune Knight
0.0%inclusion2 decks5.10K decks
Ghave, Guru of Spores
0.0%inclusion1 decks3.02K decks
Reyhan, Last of the Abzan // Yoshimaru, Ever Faithful
0.1%inclusion1 decks833 decks
New Cards
Hardened Academic
100%inclusion1 decks1 decks
99%synergy
Lorehold Charm
100%inclusion1 decks1 decks
98%synergy
Mikey & Leo, Chaos & Order
50%inclusion1 decks2 decks
48%synergy
Mikey & Mona, Mutant Sitters
50%inclusion1 decks2 decks
50%synergy
Forum of Amity
33%inclusion1 decks3 decks
32%synergy
High Synergy Cards
Ashnod's Altar
100%inclusion9 decks9 decks
94%synergy
Blood Artist
89%inclusion8 decks9 decks
77%synergy
Viscera Seer
67%inclusion6 decks9 decks
59%synergy
Geralf's Messenger
56%inclusion5 decks9 decks
55%synergy
Blasting Station
56%inclusion5 decks9 decks
55%synergy
Woe Strider
56%inclusion5 decks9 decks
54%synergy
Luminous Broodmoth
56%inclusion5 decks9 decks
53%synergy
Carrion Feeder
56%inclusion5 decks9 decks
51%synergy
Warren Soultrader
56%inclusion5 decks9 decks
50%synergy
Zulaport Cutthroat
56%inclusion5 decks9 decks
47%synergy
Top Cards
Pitiless Plunderer
56%inclusion5 decks9 decks
47%synergy
Triskelion
44%inclusion4 decks9 decks
44%synergy
Sephiroth, Fabled SOLDIER
44%inclusion4 decks9 decks
42%synergy
Mikaeus, the Unhallowed
44%inclusion4 decks9 decks
42%synergy
Umbral Collar Zealot
44%inclusion4 decks9 decks
41%synergy
Phyrexian Altar
44%inclusion4 decks9 decks
41%synergy
Bartolomé del Presidio
44%inclusion4 decks9 decks
40%synergy
Grave Pact
44%inclusion4 decks9 decks
40%synergy
Corpse Knight
44%inclusion4 decks9 decks
39%synergy
Cathars' Crusade
44%inclusion4 decks9 decks
39%synergy
Game Changers
Aura Shards
50%inclusion1 decks2 decks
43%synergy
Gamble
50%inclusion1 decks2 decks
41%synergy
Demonic Tutor
33%inclusion3 decks9 decks
14%synergy
Smothering Tithe
22%inclusion2 decks9 decks
2%synergy
Drannith Magistrate
11%inclusion1 decks9 decks
7%synergy
Opposition Agent
11%inclusion1 decks9 decks
6%synergy
Orcish Bowmasters
11%inclusion1 decks9 decks
3%synergy
Ancient Tomb
11%inclusion1 decks9 decks
2%synergy
Creatures
Murderous Redcap
100%inclusion2 decks2 decks
98%synergy
Fuming Effigy
50%inclusion1 decks2 decks
50%synergy
Furystoke Giant
50%inclusion1 decks2 decks
50%synergy
Magus of the Order
50%inclusion1 decks2 decks
50%synergy
Cultivator of Blades
50%inclusion1 decks2 decks
50%synergy
Tayam, Luminous Enigma
50%inclusion1 decks2 decks
50%synergy
Stalwart Successor
50%inclusion1 decks2 decks
50%synergy
Cleopatra, Exiled Pharaoh
50%inclusion1 decks2 decks
49%synergy
Grakmaw, Skyclave Ravager
50%inclusion1 decks2 decks
49%synergy
Quina, Qu Gourmet
50%inclusion1 decks2 decks
49%synergy
Utopia Mycon
50%inclusion1 decks2 decks
49%synergy
Trelasarra, Moon Dancer
50%inclusion1 decks2 decks
49%synergy
Herd Baloth
50%inclusion1 decks2 decks
49%synergy
Terra, Herald of Hope
50%inclusion1 decks2 decks
49%synergy
Immersturm Predator
50%inclusion1 decks2 decks
49%synergy
Generous Patron
50%inclusion1 decks2 decks
49%synergy
Ivy Lane Denizen
50%inclusion1 decks2 decks
49%synergy
Captain Sisay
50%inclusion1 decks2 decks
49%synergy
Scurry Oak
50%inclusion1 decks2 decks
48%synergy
Basking Broodscale
50%inclusion1 decks2 decks
48%synergy
Jenova, Ancient Calamity
50%inclusion1 decks2 decks
48%synergy
Fiend Artisan
50%inclusion1 decks2 decks
48%synergy
Arwen, Weaver of Hope
50%inclusion1 decks2 decks
48%synergy
Allosaurus Shepherd
50%inclusion1 decks2 decks
48%synergy
Prosperous Innkeeper
50%inclusion1 decks2 decks
48%synergy
Fauna Shaman
50%inclusion1 decks2 decks
48%synergy
Devoted Druid
50%inclusion1 decks2 decks
47%synergy
Evolution Witness
50%inclusion1 decks2 decks
47%synergy
Destiny Spinner
50%inclusion1 decks2 decks
46%synergy
Alesha, Who Laughs at Fate
50%inclusion1 decks2 decks
46%synergy
Elvish Spirit Guide
50%inclusion1 decks2 decks
46%synergy
Chainer, Nightmare Adept
50%inclusion1 decks2 decks
46%synergy
Sanctum Weaver
50%inclusion1 decks2 decks
45%synergy
Pinnacle Monk
50%inclusion1 decks2 decks
45%synergy
Chatterfang, Squirrel General
50%inclusion1 decks2 decks
44%synergy
Simian Spirit Guide
50%inclusion1 decks2 decks
44%synergy
Hexing Squelcher
50%inclusion1 decks2 decks
41%synergy
Kutzil, Malamet Exemplar
50%inclusion1 decks2 decks
36%synergy
Cruel Celebrant
44%inclusion4 decks9 decks
37%synergy
Witch Enchanter
44%inclusion4 decks9 decks
37%synergy
Elas il-Kor, Sadistic Pilgrim
44%inclusion4 decks9 decks
35%synergy
Vizier of Remedies
33%inclusion3 decks9 decks
33%synergy
Grave Researcher
33%inclusion1 decks3 decks
31%synergy
Soul Warden
33%inclusion3 decks9 decks
28%synergy
Grand Abolisher
33%inclusion3 decks9 decks
24%synergy
Lotho, Corrupt Shirriff
33%inclusion3 decks9 decks
20%synergy
Restless Apparition
22%inclusion2 decks9 decks
22%synergy
Lesser Masticore
22%inclusion2 decks9 decks
22%synergy
Obstinate Gargoyle
22%inclusion2 decks9 decks
22%synergy
Spider-Man, Web-Slinger
22%inclusion2 decks9 decks
22%synergy
Instants
First Day of Class
50%inclusion1 decks2 decks
50%synergy
Dromoka's Command
50%inclusion1 decks2 decks
49%synergy
Final Fortune
50%inclusion1 decks2 decks
48%synergy
Burnt Offering
50%inclusion1 decks2 decks
48%synergy
Abzan Charm
50%inclusion1 decks2 decks
46%synergy
Nature's Claim
50%inclusion1 decks2 decks
43%synergy
Revitalizing Repast
50%inclusion1 decks2 decks
41%synergy
Deflecting Swat
50%inclusion1 decks2 decks
33%synergy
Chaos Warp
50%inclusion1 decks2 decks
21%synergy
Assassin's Trophy
50%inclusion1 decks2 decks
19%synergy
Dark Ritual
44%inclusion4 decks9 decks
20%synergy
Swords to Plowshares
44%inclusion4 decks9 decks
-16%synergy
Anguished Unmaking
33%inclusion3 decks9 decks
9%synergy
Flicker of Fate
22%inclusion2 decks9 decks
21%synergy
Flare of Fortitude
22%inclusion2 decks9 decks
18%synergy
Clever Concealment
22%inclusion2 decks9 decks
18%synergy
Ephemerate
22%inclusion2 decks9 decks
16%synergy
Silence
22%inclusion2 decks9 decks
16%synergy
Entomb
22%inclusion2 decks9 decks
15%synergy
Dawn's Truce
22%inclusion2 decks9 decks
15%synergy
Malakir Rebirth
22%inclusion2 decks9 decks
14%synergy
Fell the Profane
22%inclusion2 decks9 decks
13%synergy
Village Rites
22%inclusion2 decks9 decks
13%synergy
Flawless Maneuver
22%inclusion2 decks9 decks
12%synergy
Deadly Dispute
22%inclusion2 decks9 decks
10%synergy
Path to Exile
22%inclusion2 decks9 decks
-25%synergy
Mortal's Ardor
11%inclusion1 decks9 decks
11%synergy
Spoils of Evil
11%inclusion1 decks9 decks
11%synergy
Reaping the Graves
11%inclusion1 decks9 decks
11%synergy
Give In to Violence
11%inclusion1 decks9 decks
11%synergy
Brought Back
11%inclusion1 decks9 decks
10%synergy
Undying Evil
11%inclusion1 decks9 decks
10%synergy
Personify
11%inclusion1 decks9 decks
10%synergy
Orim's Chant
11%inclusion1 decks9 decks
10%synergy
Feign Death
11%inclusion1 decks9 decks
9%synergy
Plumb the Forbidden
11%inclusion1 decks9 decks
9%synergy
Sejiri Shelter
11%inclusion1 decks9 decks
8%synergy
Tragic Slip
11%inclusion1 decks9 decks
8%synergy
Cloudshift
11%inclusion1 decks9 decks
7%synergy
Saw in Half
11%inclusion1 decks9 decks
7%synergy
Culling the Weak
11%inclusion1 decks9 decks
7%synergy
Reprieve
11%inclusion1 decks9 decks
7%synergy
Corrupted Conviction
11%inclusion1 decks9 decks
7%synergy
Deadly Rollick
11%inclusion1 decks9 decks
-3%synergy
Sorceries
Prepare // Fight
50%inclusion1 decks2 decks
50%synergy
Ruinous Ultimatum
50%inclusion1 decks2 decks
31%synergy
Damn
44%inclusion4 decks9 decks
29%synergy
Reanimate
44%inclusion4 decks9 decks
25%synergy
Daydream
33%inclusion1 decks3 decks
33%synergy
Moment of Reckoning
33%inclusion1 decks3 decks
32%synergy
Unburial Rites
22%inclusion2 decks9 decks
20%synergy
Lively Dirge
22%inclusion2 decks9 decks
20%synergy
Stitch Together
22%inclusion2 decks9 decks
20%synergy
Unmarked Grave
22%inclusion2 decks9 decks
20%synergy
Persist
22%inclusion2 decks9 decks
20%synergy
Dread Return
22%inclusion2 decks9 decks
17%synergy
Victimize
22%inclusion2 decks9 decks
10%synergy
Discerning Taste
11%inclusion1 decks9 decks
11%synergy
Covetous Elegy
11%inclusion1 decks9 decks
11%synergy
Flicker
11%inclusion1 decks9 decks
11%synergy
Cruel Tutor
11%inclusion1 decks9 decks
11%synergy
Search for Glory
11%inclusion1 decks9 decks
10%synergy
Legions to Ashes
11%inclusion1 decks9 decks
10%synergy
Raise the Past
11%inclusion1 decks9 decks
10%synergy
Ascend from Avernus
11%inclusion1 decks9 decks
10%synergy
Ondu Inversion
11%inclusion1 decks9 decks
9%synergy
Unearth
11%inclusion1 decks9 decks
8%synergy
Hour of Reckoning
11%inclusion1 decks9 decks
8%synergy
Diabolic Tutor
11%inclusion1 decks9 decks
6%synergy
Buried Alive
11%inclusion1 decks9 decks
5%synergy
Sevinne's Reclamation
11%inclusion1 decks9 decks
4%synergy
Diabolic Intent
11%inclusion1 decks9 decks
3%synergy
Toxic Deluge
11%inclusion1 decks9 decks
-7%synergy
Utility Artifacts
Skullclamp
44%inclusion4 decks9 decks
33%synergy
Lightning Greaves
44%inclusion4 decks9 decks
20%synergy
Agatha's Soul Cauldron
22%inclusion2 decks9 decks
21%synergy
Swiftfoot Boots
22%inclusion2 decks9 decks
-5%synergy
Storage Matrix
11%inclusion1 decks9 decks
11%synergy
Ensnaring Bridge
11%inclusion1 decks9 decks
11%synergy
The Golden Throne
11%inclusion1 decks9 decks
11%synergy
Resurrection Orb
11%inclusion1 decks9 decks
11%synergy
Cauldron of Souls
11%inclusion1 decks9 decks
11%synergy
Nim Deathmantle
11%inclusion1 decks9 decks
11%synergy
Winter Orb
11%inclusion1 decks9 decks
11%synergy
Meekstone
11%inclusion1 decks9 decks
11%synergy
Winter Moon
11%inclusion1 decks9 decks
10%synergy
Grinding Station
11%inclusion1 decks9 decks
10%synergy
Palantír of Orthanc
11%inclusion1 decks9 decks
10%synergy
Oketra's Monument
11%inclusion1 decks9 decks
10%synergy
The Seriema
11%inclusion1 decks9 decks
9%synergy
Cloud Key
11%inclusion1 decks9 decks
9%synergy
Conjurer's Closet
11%inclusion1 decks9 decks
9%synergy
Helm of the Host
11%inclusion1 decks9 decks
8%synergy
Archaeomancer's Map
11%inclusion1 decks9 decks
7%synergy
Jet Medallion
11%inclusion1 decks9 decks
7%synergy
The Wind Crystal
11%inclusion1 decks9 decks
7%synergy
Wayfarer's Bauble
11%inclusion1 decks9 decks
4%synergy
Enchantments
Goblin Bombardment
100%inclusion2 decks2 decks
94%synergy
Pandemonium
50%inclusion1 decks2 decks
50%synergy
Sterling Grove
50%inclusion1 decks2 decks
44%synergy
Utopia Sprawl
50%inclusion1 decks2 decks
43%synergy
Wild Growth
50%inclusion1 decks2 decks
40%synergy
Solemnity
33%inclusion3 decks9 decks
32%synergy
Bastion of Remembrance
33%inclusion3 decks9 decks
27%synergy
Black Market Connections
33%inclusion3 decks9 decks
21%synergy
Thran Vigil
22%inclusion2 decks9 decks
22%synergy
The Meathook Massacre
22%inclusion2 decks9 decks
17%synergy
Animate Dead
22%inclusion2 decks9 decks
14%synergy
Martyr's Cause
11%inclusion1 decks9 decks
11%synergy
Fanatical Devotion
11%inclusion1 decks9 decks
11%synergy
Blight Mound
11%inclusion1 decks9 decks
10%synergy
Tinybones Joins Up
11%inclusion1 decks9 decks
10%synergy
Swift Reconfiguration
11%inclusion1 decks9 decks
10%synergy
Out of the Tombs
11%inclusion1 decks9 decks
10%synergy
Funeral Room // Awakening Hall
11%inclusion1 decks9 decks
9%synergy
Aura of Silence
11%inclusion1 decks9 decks
9%synergy
Deafening Silence
11%inclusion1 decks9 decks
9%synergy
Grave Venerations
11%inclusion1 decks9 decks
9%synergy
Dazzling Theater // Prop Room
11%inclusion1 decks9 decks
9%synergy
Teval's Judgment
11%inclusion1 decks9 decks
9%synergy
Cleric Class
11%inclusion1 decks9 decks
9%synergy
Dictate of Erebos
11%inclusion1 decks9 decks
8%synergy
Teleportation Circle
11%inclusion1 decks9 decks
8%synergy
Tocasia's Welcome
11%inclusion1 decks9 decks
8%synergy
Trouble in Pairs
11%inclusion1 decks9 decks
7%synergy
Ripples of Undeath
11%inclusion1 decks9 decks
6%synergy
Felidar Retreat
11%inclusion1 decks9 decks
5%synergy
Blind Obedience
11%inclusion1 decks9 decks
5%synergy
Land Tax
11%inclusion1 decks9 decks
5%synergy
Ghostly Prison
11%inclusion1 decks9 decks
0%synergy
Phyrexian Arena
11%inclusion1 decks9 decks
-4%synergy
Battles
Invasion of Ikoria
50%inclusion1 decks2 decks
47%synergy
Planeswalkers
Jiang Yanggu, Wildcrafter
50%inclusion1 decks2 decks
49%synergy
Sorin, Solemn Visitor
11%inclusion1 decks9 decks
11%synergy
Sorin, Vengeful Bloodlord
11%inclusion1 decks9 decks
10%synergy
Liliana, Dreadhorde General
11%inclusion1 decks9 decks
8%synergy
Utility Lands
Grim Backwoods
100%inclusion2 decks2 decks
97%synergy
Tranquil Thicket
50%inclusion1 decks2 decks
47%synergy
Dryad Arbor
50%inclusion1 decks2 decks
46%synergy
Shifting Woodland
50%inclusion1 decks2 decks
43%synergy
Eiganjo, Seat of the Empire
33%inclusion3 decks9 decks
27%synergy
Urborg, Tomb of Yawgmoth
33%inclusion3 decks9 decks
24%synergy
Cabal Stronghold
22%inclusion2 decks9 decks
19%synergy
Command Beacon
22%inclusion2 decks9 decks
17%synergy
Idyllic Grange
11%inclusion1 decks9 decks
10%synergy
Shambling Vent
11%inclusion1 decks9 decks
10%synergy
Fountainport
11%inclusion1 decks9 decks
10%synergy
Dakmor Salvage
11%inclusion1 decks9 decks
9%synergy
Susur Secundi, Void Altar
11%inclusion1 decks9 decks
9%synergy
Secluded Steppe
11%inclusion1 decks9 decks
9%synergy
High Market
11%inclusion1 decks9 decks
8%synergy
Barren Moor
11%inclusion1 decks9 decks
8%synergy
Witch's Cottage
11%inclusion1 decks9 decks
8%synergy
Castle Locthwain
11%inclusion1 decks9 decks
7%synergy
Castle Ardenvale
11%inclusion1 decks9 decks
7%synergy
Nykthos, Shrine to Nyx
11%inclusion1 decks9 decks
6%synergy
War Room
11%inclusion1 decks9 decks
5%synergy
Takenuma, Abandoned Mire
11%inclusion1 decks9 decks
3%synergy
Phyrexian Tower
11%inclusion1 decks9 decks
2%synergy
Cabal Coffers
11%inclusion1 decks9 decks
2%synergy
Bojuka Bog
11%inclusion1 decks9 decks
-19%synergy
Mana Artifacts
Talisman of Indulgence
100%inclusion2 decks2 decks
73%synergy
Sol Ring
100%inclusion9 decks9 decks
16%synergy
Arcane Signet
78%inclusion7 decks9 decks
6%synergy
Talisman of Hierarchy
56%inclusion5 decks9 decks
29%synergy
Selesnya Signet
50%inclusion1 decks2 decks
43%synergy
Talisman of Unity
50%inclusion1 decks2 decks
43%synergy
Golgari Signet
50%inclusion1 decks2 decks
40%synergy
Talisman of Resilience
50%inclusion1 decks2 decks
38%synergy
Talisman of Conviction
50%inclusion1 decks2 decks
26%synergy
Fellwar Stone
44%inclusion4 decks9 decks
24%synergy
Orzhov Signet
44%inclusion4 decks9 decks
22%synergy
Mind Stone
22%inclusion2 decks9 decks
8%synergy
Crowded Crypt
11%inclusion1 decks9 decks
10%synergy
Marble Diamond
11%inclusion1 decks9 decks
8%synergy
Charcoal Diamond
11%inclusion1 decks9 decks
7%synergy
The Soul Stone
11%inclusion1 decks9 decks
7%synergy
Commander's Sphere
11%inclusion1 decks9 decks
0%synergy
Thought Vessel
11%inclusion1 decks9 decks
-6%synergy
Lands
Twilight Mire
100%inclusion2 decks2 decks
86%synergy
Rugged Prairie
100%inclusion2 decks2 decks
85%synergy
Sandsteppe Citadel
100%inclusion2 decks2 decks
74%synergy
Dragonskull Summit
100%inclusion2 decks2 decks
65%synergy
Clifftop Retreat
100%inclusion2 decks2 decks
64%synergy
Blood Crypt
100%inclusion2 decks2 decks
62%synergy
Command Tower
100%inclusion9 decks9 decks
26%synergy
Fetid Heath
67%inclusion6 decks9 decks
53%synergy
Isolated Chapel
67%inclusion6 decks9 decks
33%synergy
Godless Shrine
67%inclusion6 decks9 decks
25%synergy
Vault of Champions
56%inclusion5 decks9 decks
32%synergy
Wooded Bastion
50%inclusion1 decks2 decks
46%synergy
Horizon Canopy
50%inclusion1 decks2 decks
45%synergy
Nurturing Peatland
50%inclusion1 decks2 decks
45%synergy
Haunted Mire
50%inclusion1 decks2 decks
44%synergy
Murmuring Bosk
50%inclusion1 decks2 decks
44%synergy
Blossoming Sands
50%inclusion1 decks2 decks
43%synergy
Deceptive Landscape
50%inclusion1 decks2 decks
42%synergy
Jungle Hollow
50%inclusion1 decks2 decks
41%synergy
Graven Cairns
50%inclusion1 decks2 decks
40%synergy
Rakdos Carnarium
50%inclusion1 decks2 decks
38%synergy
Selesnya Sanctuary
50%inclusion1 decks2 decks
38%synergy
Shadowblood Ridge
50%inclusion1 decks2 decks
37%synergy
Furycalm Snarl
50%inclusion1 decks2 decks
36%synergy
Sundown Pass
50%inclusion1 decks2 decks
35%synergy
Temple of Malady
50%inclusion1 decks2 decks
35%synergy
Golgari Rot Farm
50%inclusion1 decks2 decks
33%synergy
Brushland
50%inclusion1 decks2 decks
30%synergy
Bountiful Promenade
50%inclusion1 decks2 decks
28%synergy
Undergrowth Stadium
50%inclusion1 decks2 decks
26%synergy
Sulfurous Springs
50%inclusion1 decks2 decks
26%synergy
Llanowar Wastes
50%inclusion1 decks2 decks
23%synergy
Sunpetal Grove
50%inclusion1 decks2 decks
22%synergy
Nomad Outpost
50%inclusion1 decks2 decks
21%synergy
Battlefield Forge
50%inclusion1 decks2 decks
21%synergy
Woodland Cemetery
50%inclusion1 decks2 decks
17%synergy
Sacred Foundry
50%inclusion1 decks2 decks
13%synergy
Temple Garden
50%inclusion1 decks2 decks
11%synergy
Overgrown Tomb
50%inclusion1 decks2 decks
9%synergy
Caves of Koilos
44%inclusion4 decks9 decks
15%synergy
Exotic Orchard
44%inclusion4 decks9 decks
8%synergy
Brightclimb Pathway
33%inclusion3 decks9 decks
25%synergy
Bleachbone Verge
33%inclusion3 decks9 decks
25%synergy
Tainted Field
33%inclusion3 decks9 decks
21%synergy
Shattered Sanctum
33%inclusion3 decks9 decks
18%synergy
Path of Ancestry
33%inclusion3 decks9 decks
11%synergy
Desolate Mire
22%inclusion2 decks9 decks
16%synergy
Shadowy Backstreet
22%inclusion2 decks9 decks
12%synergy
Marsh Flats
22%inclusion2 decks9 decks
12%synergy
Shineshadow Snarl
22%inclusion2 decks9 decks
10%synergy