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%inclusion4 decks3.93K decks
Celes, Rune Knight
0.0%inclusion2 decks4.66K decks
Reyhan, Last of the Abzan // Yoshimaru, Ever Faithful
0.1%inclusion1 decks769 decks
New Cards
Mikey & Mona, Mutant Sitters
100%inclusion1 decks1 decks
100%synergy
Leonardo, Cutting Edge
14%inclusion1 decks7 decks
14%synergy
Madame Null, Power Broker
14%inclusion1 decks7 decks
14%synergy
High Synergy Cards
Ashnod's Altar
100%inclusion7 decks7 decks
94%synergy
Viscera Seer
86%inclusion6 decks7 decks
78%synergy
Blood Artist
86%inclusion6 decks7 decks
74%synergy
Blasting Station
71%inclusion5 decks7 decks
71%synergy
Luminous Broodmoth
71%inclusion5 decks7 decks
69%synergy
Zulaport Cutthroat
71%inclusion5 decks7 decks
63%synergy
Pitiless Plunderer
71%inclusion5 decks7 decks
63%synergy
Geralf's Messenger
57%inclusion4 decks7 decks
57%synergy
Woe Strider
57%inclusion4 decks7 decks
55%synergy
Carrion Feeder
57%inclusion4 decks7 decks
53%synergy
Top Cards
Warren Soultrader
57%inclusion4 decks7 decks
52%synergy
Cruel Celebrant
57%inclusion4 decks7 decks
50%synergy
Dark Ritual
57%inclusion4 decks7 decks
33%synergy
Game Changers
Gamble
50%inclusion1 decks2 decks
41%synergy
Demonic Tutor
43%inclusion3 decks7 decks
24%synergy
Smothering Tithe
29%inclusion2 decks7 decks
8%synergy
Drannith Magistrate
14%inclusion1 decks7 decks
10%synergy
Opposition Agent
14%inclusion1 decks7 decks
9%synergy
Orcish Bowmasters
14%inclusion1 decks7 decks
6%synergy
Ancient Tomb
14%inclusion1 decks7 decks
5%synergy
Creatures
Cultivator of Blades
100%inclusion1 decks1 decks
100%synergy
Stalwart Successor
100%inclusion1 decks1 decks
100%synergy
Cleopatra, Exiled Pharaoh
100%inclusion1 decks1 decks
99%synergy
Grakmaw, Skyclave Ravager
100%inclusion1 decks1 decks
99%synergy
Quina, Qu Gourmet
100%inclusion1 decks1 decks
99%synergy
Trelasarra, Moon Dancer
100%inclusion1 decks1 decks
99%synergy
Murderous Redcap
100%inclusion2 decks2 decks
98%synergy
Jenova, Ancient Calamity
100%inclusion1 decks1 decks
98%synergy
Prosperous Innkeeper
100%inclusion1 decks1 decks
98%synergy
Elvish Spirit Guide
100%inclusion1 decks1 decks
96%synergy
Chatterfang, Squirrel General
100%inclusion1 decks1 decks
95%synergy
Fuming Effigy
50%inclusion1 decks2 decks
50%synergy
Furystoke Giant
50%inclusion1 decks2 decks
50%synergy
Terra, Herald of Hope
50%inclusion1 decks2 decks
49%synergy
Immersturm Predator
50%inclusion1 decks2 decks
49%synergy
Alesha, Who Laughs at Fate
50%inclusion1 decks2 decks
46%synergy
Chainer, Nightmare Adept
50%inclusion1 decks2 decks
46%synergy
Pinnacle Monk
50%inclusion1 decks2 decks
45%synergy
Simian Spirit Guide
50%inclusion1 decks2 decks
44%synergy
Hexing Squelcher
50%inclusion1 decks2 decks
41%synergy
Vizier of Remedies
43%inclusion3 decks7 decks
43%synergy
Triskelion
43%inclusion3 decks7 decks
43%synergy
Sephiroth, Fabled SOLDIER
43%inclusion3 decks7 decks
41%synergy
Mikaeus, the Unhallowed
43%inclusion3 decks7 decks
40%synergy
Umbral Collar Zealot
43%inclusion3 decks7 decks
40%synergy
Bartolomé del Presidio
43%inclusion3 decks7 decks
39%synergy
Soul Warden
43%inclusion3 decks7 decks
37%synergy
Witch Enchanter
43%inclusion3 decks7 decks
36%synergy
Grand Abolisher
43%inclusion3 decks7 decks
34%synergy
Elas il-Kor, Sadistic Pilgrim
43%inclusion3 decks7 decks
33%synergy
Lotho, Corrupt Shirriff
43%inclusion3 decks7 decks
30%synergy
Restless Apparition
29%inclusion2 decks7 decks
28%synergy
Lesser Masticore
29%inclusion2 decks7 decks
28%synergy
Obstinate Gargoyle
29%inclusion2 decks7 decks
28%synergy
Butcher Ghoul
29%inclusion2 decks7 decks
28%synergy
Puppeteer Clique
29%inclusion2 decks7 decks
27%synergy
Zack Fair
29%inclusion2 decks7 decks
27%synergy
Hoarding Broodlord
29%inclusion2 decks7 decks
27%synergy
Junji, the Midnight Sky
29%inclusion2 decks7 decks
26%synergy
Priest of Fell Rites
29%inclusion2 decks7 decks
26%synergy
Grim Haruspex
29%inclusion2 decks7 decks
26%synergy
Yahenni, Undying Partisan
29%inclusion2 decks7 decks
26%synergy
Charismatic Conqueror
29%inclusion2 decks7 decks
25%synergy
Soul's Attendant
29%inclusion2 decks7 decks
25%synergy
Teysa Karlov
29%inclusion2 decks7 decks
24%synergy
Marionette Apprentice
29%inclusion2 decks7 decks
24%synergy
Corpse Knight
29%inclusion2 decks7 decks
23%synergy
Elenda, the Dusk Rose
29%inclusion2 decks7 decks
23%synergy
Mother of Runes
29%inclusion2 decks7 decks
23%synergy
Voice of Victory
29%inclusion2 decks7 decks
22%synergy
Instants
First Day of Class
50%inclusion1 decks2 decks
50%synergy
Final Fortune
50%inclusion1 decks2 decks
48%synergy
Burnt Offering
50%inclusion1 decks2 decks
48%synergy
Deflecting Swat
50%inclusion1 decks2 decks
33%synergy
Chaos Warp
50%inclusion1 decks2 decks
21%synergy
Anguished Unmaking
43%inclusion3 decks7 decks
18%synergy
Swords to Plowshares
43%inclusion3 decks7 decks
-18%synergy
Flicker of Fate
29%inclusion2 decks7 decks
27%synergy
Flare of Fortitude
29%inclusion2 decks7 decks
25%synergy
Clever Concealment
29%inclusion2 decks7 decks
24%synergy
Ephemerate
29%inclusion2 decks7 decks
23%synergy
Silence
29%inclusion2 decks7 decks
22%synergy
Entomb
29%inclusion2 decks7 decks
22%synergy
Malakir Rebirth
29%inclusion2 decks7 decks
20%synergy
Village Rites
29%inclusion2 decks7 decks
19%synergy
Deadly Dispute
29%inclusion2 decks7 decks
16%synergy
Path to Exile
29%inclusion2 decks7 decks
-19%synergy
Mortal's Ardor
14%inclusion1 decks7 decks
14%synergy
Spoils of Evil
14%inclusion1 decks7 decks
14%synergy
Give In to Violence
14%inclusion1 decks7 decks
14%synergy
Brought Back
14%inclusion1 decks7 decks
14%synergy
Personify
14%inclusion1 decks7 decks
13%synergy
Orim's Chant
14%inclusion1 decks7 decks
13%synergy
Feign Death
14%inclusion1 decks7 decks
12%synergy
Plumb the Forbidden
14%inclusion1 decks7 decks
12%synergy
Cloudshift
14%inclusion1 decks7 decks
11%synergy
Culling the Weak
14%inclusion1 decks7 decks
10%synergy
Saw in Half
14%inclusion1 decks7 decks
10%synergy
Corrupted Conviction
14%inclusion1 decks7 decks
10%synergy
Dawn's Truce
14%inclusion1 decks7 decks
7%synergy
Fell the Profane
14%inclusion1 decks7 decks
5%synergy
Flawless Maneuver
14%inclusion1 decks7 decks
4%synergy
Sorceries
Prepare // Fight
100%inclusion1 decks1 decks
100%synergy
Ruinous Ultimatum
50%inclusion1 decks2 decks
31%synergy
Damn
43%inclusion3 decks7 decks
28%synergy
Reanimate
43%inclusion3 decks7 decks
24%synergy
Lively Dirge
29%inclusion2 decks7 decks
27%synergy
Stitch Together
29%inclusion2 decks7 decks
27%synergy
Unmarked Grave
29%inclusion2 decks7 decks
27%synergy
Persist
29%inclusion2 decks7 decks
26%synergy
Victimize
29%inclusion2 decks7 decks
16%synergy
Discerning Taste
14%inclusion1 decks7 decks
14%synergy
Covetous Elegy
14%inclusion1 decks7 decks
14%synergy
Flicker
14%inclusion1 decks7 decks
14%synergy
Cruel Tutor
14%inclusion1 decks7 decks
14%synergy
Search for Glory
14%inclusion1 decks7 decks
13%synergy
Legions to Ashes
14%inclusion1 decks7 decks
13%synergy
Unburial Rites
14%inclusion1 decks7 decks
12%synergy
Unearth
14%inclusion1 decks7 decks
11%synergy
Hour of Reckoning
14%inclusion1 decks7 decks
11%synergy
Dread Return
14%inclusion1 decks7 decks
9%synergy
Diabolic Tutor
14%inclusion1 decks7 decks
9%synergy
Buried Alive
14%inclusion1 decks7 decks
8%synergy
Sevinne's Reclamation
14%inclusion1 decks7 decks
7%synergy
Diabolic Intent
14%inclusion1 decks7 decks
7%synergy
Toxic Deluge
14%inclusion1 decks7 decks
-4%synergy
Utility Artifacts
Phyrexian Altar
43%inclusion3 decks7 decks
39%synergy
Skullclamp
43%inclusion3 decks7 decks
32%synergy
Lightning Greaves
43%inclusion3 decks7 decks
18%synergy
Agatha's Soul Cauldron
29%inclusion2 decks7 decks
27%synergy
Swiftfoot Boots
29%inclusion2 decks7 decks
1%synergy
Storage Matrix
14%inclusion1 decks7 decks
14%synergy
Ensnaring Bridge
14%inclusion1 decks7 decks
14%synergy
Resurrection Orb
14%inclusion1 decks7 decks
14%synergy
Cauldron of Souls
14%inclusion1 decks7 decks
14%synergy
Nim Deathmantle
14%inclusion1 decks7 decks
14%synergy
Winter Orb
14%inclusion1 decks7 decks
14%synergy
Meekstone
14%inclusion1 decks7 decks
14%synergy
Winter Moon
14%inclusion1 decks7 decks
14%synergy
Grinding Station
14%inclusion1 decks7 decks
14%synergy
Palantír of Orthanc
14%inclusion1 decks7 decks
13%synergy
The Seriema
14%inclusion1 decks7 decks
13%synergy
Conjurer's Closet
14%inclusion1 decks7 decks
12%synergy
Helm of the Host
14%inclusion1 decks7 decks
11%synergy
Archaeomancer's Map
14%inclusion1 decks7 decks
11%synergy
Jet Medallion
14%inclusion1 decks7 decks
11%synergy
Wayfarer's Bauble
14%inclusion1 decks7 decks
7%synergy
Enchantments
Goblin Bombardment
100%inclusion2 decks2 decks
94%synergy
Pandemonium
50%inclusion1 decks2 decks
50%synergy
Solemnity
43%inclusion3 decks7 decks
42%synergy
Grave Pact
43%inclusion3 decks7 decks
38%synergy
Cathars' Crusade
43%inclusion3 decks7 decks
38%synergy
Bastion of Remembrance
43%inclusion3 decks7 decks
36%synergy
Black Market Connections
43%inclusion3 decks7 decks
31%synergy
Thran Vigil
29%inclusion2 decks7 decks
28%synergy
Animate Dead
29%inclusion2 decks7 decks
20%synergy
Martyr's Cause
14%inclusion1 decks7 decks
14%synergy
Fanatical Devotion
14%inclusion1 decks7 decks
14%synergy
Tinybones Joins Up
14%inclusion1 decks7 decks
13%synergy
Funeral Room // Awakening Hall
14%inclusion1 decks7 decks
13%synergy
Aura of Silence
14%inclusion1 decks7 decks
13%synergy
Deafening Silence
14%inclusion1 decks7 decks
12%synergy
Grave Venerations
14%inclusion1 decks7 decks
12%synergy
Dazzling Theater // Prop Room
14%inclusion1 decks7 decks
12%synergy
Teval's Judgment
14%inclusion1 decks7 decks
12%synergy
Dictate of Erebos
14%inclusion1 decks7 decks
11%synergy
Teleportation Circle
14%inclusion1 decks7 decks
11%synergy
Trouble in Pairs
14%inclusion1 decks7 decks
10%synergy
The Meathook Massacre
14%inclusion1 decks7 decks
9%synergy
Felidar Retreat
14%inclusion1 decks7 decks
8%synergy
Blind Obedience
14%inclusion1 decks7 decks
8%synergy
Land Tax
14%inclusion1 decks7 decks
8%synergy
Ghostly Prison
14%inclusion1 decks7 decks
3%synergy
Phyrexian Arena
14%inclusion1 decks7 decks
-1%synergy
Planeswalkers
Jiang Yanggu, Wildcrafter
100%inclusion1 decks1 decks
99%synergy
Sorin, Solemn Visitor
14%inclusion1 decks7 decks
14%synergy
Sorin, Vengeful Bloodlord
14%inclusion1 decks7 decks
13%synergy
Liliana, Dreadhorde General
14%inclusion1 decks7 decks
11%synergy
Utility Lands
Grim Backwoods
100%inclusion1 decks1 decks
97%synergy
Tranquil Thicket
100%inclusion1 decks1 decks
97%synergy
Command Beacon
29%inclusion2 decks7 decks
24%synergy
Urborg, Tomb of Yawgmoth
29%inclusion2 decks7 decks
20%synergy
Shambling Vent
14%inclusion1 decks7 decks
13%synergy
Secluded Steppe
14%inclusion1 decks7 decks
12%synergy
High Market
14%inclusion1 decks7 decks
12%synergy
Cabal Stronghold
14%inclusion1 decks7 decks
11%synergy
Barren Moor
14%inclusion1 decks7 decks
11%synergy
Nykthos, Shrine to Nyx
14%inclusion1 decks7 decks
9%synergy
War Room
14%inclusion1 decks7 decks
9%synergy
Eiganjo, Seat of the Empire
14%inclusion1 decks7 decks
7%synergy
Phyrexian Tower
14%inclusion1 decks7 decks
5%synergy
Cabal Coffers
14%inclusion1 decks7 decks
5%synergy
Bojuka Bog
14%inclusion1 decks7 decks
-15%synergy
Mana Artifacts
Selesnya Signet
100%inclusion1 decks1 decks
93%synergy
Talisman of Unity
100%inclusion1 decks1 decks
93%synergy
Golgari Signet
100%inclusion1 decks1 decks
90%synergy
Talisman of Resilience
100%inclusion1 decks1 decks
87%synergy
Talisman of Indulgence
100%inclusion2 decks2 decks
73%synergy
Sol Ring
100%inclusion7 decks7 decks
16%synergy
Arcane Signet
86%inclusion6 decks7 decks
14%synergy
Talisman of Hierarchy
71%inclusion5 decks7 decks
45%synergy
Fellwar Stone
57%inclusion4 decks7 decks
37%synergy
Orzhov Signet
57%inclusion4 decks7 decks
34%synergy
Talisman of Conviction
50%inclusion1 decks2 decks
26%synergy
Marble Diamond
14%inclusion1 decks7 decks
11%synergy
The Soul Stone
14%inclusion1 decks7 decks
10%synergy
Charcoal Diamond
14%inclusion1 decks7 decks
10%synergy
Commander's Sphere
14%inclusion1 decks7 decks
3%synergy
Mind Stone
14%inclusion1 decks7 decks
0%synergy
Thought Vessel
14%inclusion1 decks7 decks
-3%synergy
Lands
Haunted Mire
100%inclusion1 decks1 decks
94%synergy
Blossoming Sands
100%inclusion1 decks1 decks
93%synergy
Deceptive Landscape
100%inclusion1 decks1 decks
92%synergy
Jungle Hollow
100%inclusion1 decks1 decks
91%synergy
Selesnya Sanctuary
100%inclusion1 decks1 decks
88%synergy
Twilight Mire
100%inclusion1 decks1 decks
86%synergy
Rugged Prairie
100%inclusion2 decks2 decks
85%synergy
Temple of Malady
100%inclusion1 decks1 decks
84%synergy
Golgari Rot Farm
100%inclusion1 decks1 decks
83%synergy
Brushland
100%inclusion1 decks1 decks
80%synergy
Sandsteppe Citadel
100%inclusion1 decks1 decks
74%synergy
Llanowar Wastes
100%inclusion1 decks1 decks
73%synergy
Sunpetal Grove
100%inclusion1 decks1 decks
72%synergy
Woodland Cemetery
100%inclusion1 decks1 decks
68%synergy
Dragonskull Summit
100%inclusion2 decks2 decks
65%synergy
Clifftop Retreat
100%inclusion2 decks2 decks
65%synergy
Blood Crypt
100%inclusion2 decks2 decks
62%synergy
Command Tower
100%inclusion7 decks7 decks
26%synergy
Isolated Chapel
86%inclusion6 decks7 decks
52%synergy
Fetid Heath
71%inclusion5 decks7 decks
58%synergy
Godless Shrine
71%inclusion5 decks7 decks
30%synergy
Vault of Champions
57%inclusion4 decks7 decks
34%synergy
Caves of Koilos
57%inclusion4 decks7 decks
28%synergy
Graven Cairns
50%inclusion1 decks2 decks
40%synergy
Rakdos Carnarium
50%inclusion1 decks2 decks
38%synergy
Shadowblood Ridge
50%inclusion1 decks2 decks
37%synergy
Furycalm Snarl
50%inclusion1 decks2 decks
36%synergy
Sulfurous Springs
50%inclusion1 decks2 decks
26%synergy
Nomad Outpost
50%inclusion1 decks2 decks
21%synergy
Battlefield Forge
50%inclusion1 decks2 decks
21%synergy
Sacred Foundry
50%inclusion1 decks2 decks
13%synergy
Tainted Field
43%inclusion3 decks7 decks
30%synergy
Shattered Sanctum
43%inclusion3 decks7 decks
28%synergy
Exotic Orchard
43%inclusion3 decks7 decks
6%synergy
Bleachbone Verge
29%inclusion2 decks7 decks
20%synergy
Shineshadow Snarl
29%inclusion2 decks7 decks
16%synergy
Orzhov Basilica
29%inclusion2 decks7 decks
15%synergy
Evolving Wilds
29%inclusion2 decks7 decks
8%synergy
Path of Ancestry
29%inclusion2 decks7 decks
6%synergy
Unknown Shores
14%inclusion1 decks7 decks
14%synergy
Grasslands
14%inclusion1 decks7 decks
14%synergy
Misty Palms Oasis
14%inclusion1 decks7 decks
13%synergy
The Grey Havens
14%inclusion1 decks7 decks
13%synergy
Snowfield Sinkhole
14%inclusion1 decks7 decks
12%synergy
Demolition Field
14%inclusion1 decks7 decks
11%synergy
Desolate Mire
14%inclusion1 decks7 decks
8%synergy
Brightclimb Pathway
14%inclusion1 decks7 decks
6%synergy
Scoured Barrens
14%inclusion1 decks7 decks
6%synergy
Shadowy Backstreet
14%inclusion1 decks7 decks
4%synergy
Marsh Flats
14%inclusion1 decks7 decks
4%synergy