Eirdu, Carrier of Dawn
Umbral Collar Zealot
Butcher Ghoul

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield and Butcher Ghoul without a +1/+1 counter on it on the battlefield).

   Steps

How does this combo work?
1
Activate Umbral Collar Zealot by sacrificing Butcher Ghoul
2
When Butcher Ghoul dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3
Resolve the Umbral Collar Zealot ability.
4
Activate Umbral Collar Zealot by sacrificing Butcher Ghoul
5
When Butcher Ghoul dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6
Butcher Ghoul enters and dies as a state-based action due to having 0 toughness. Its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7
Resolve the Umbral Collar Zealot ability from step 4.
8
Repeat from step 4.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite death triggers
Infinite sacrifice triggers
Infinite surveil
Teysa Karlov
0.1%inclusion11 decks10.3K decks
Tayam, Luminous Enigma
0.1%inclusion3 decks4.45K decks
Teysa, Orzhov Scion
0.1%inclusion2 decks1.96K decks
Elas il-Kor, Sadistic Pilgrim
0.1%inclusion2 decks3.97K decks
Syr Vondam, Sunstar Exemplar
0.1%inclusion2 decks3.09K decks
Celes, Rune Knight
0.0%inclusion2 decks6.61K decks
Zur the Enchanter
0.0%inclusion1 decks7.90K decks
Othelm, Sigardian Outcast // Wernog, Rider's Chaplain
0.2%inclusion1 decks579 decks
Zahur, Glory's Past
0.2%inclusion1 decks553 decks
Liesa, Forgotten Archangel
0.1%inclusion1 decks1.63K decks
Bartolomé del Presidio
0.1%inclusion1 decks894 decks
Kenrith, the Returned King
0.0%inclusion1 decks14.5K decks
Sefris of the Hidden Ways
0.0%inclusion1 decks6.70K decks
Shadowheart, Dark Justiciar // Noble Heritage
0.3%inclusion1 decks291 decks
Ratadrabik of Urborg
0.0%inclusion1 decks2.89K decks
New Cards
Hammerhead, Maggia Boss
2.4%inclusion2 decks82 decks
2%synergy
Kingpin, Wilson Fisk
1.3%inclusion1 decks80 decks
1%synergy
The Mind Stone
1.0%inclusion2 decks195 decks
-1%synergy
High Synergy Cards
Viscera Seer
90%inclusion892 decks991 decks
82%synergy
Strangleroot Geist
80%inclusion4 decks5 decks
80%synergy
Young Wolf
80%inclusion4 decks5 decks
80%synergy
Geralf's Messenger
77%inclusion761 decks991 decks
76%synergy
Elas il-Kor, Sadistic Pilgrim
85%inclusion847 decks991 decks
76%synergy
Cruel Celebrant
82%inclusion809 decks991 decks
75%synergy
Vizier of Remedies
74%inclusion731 decks991 decks
74%synergy
Zulaport Cutthroat
80%inclusion797 decks991 decks
72%synergy
Blood Artist
82%inclusion817 decks991 decks
71%synergy
Marionette Apprentice
72%inclusion717 decks991 decks
68%synergy
Top Cards
Swords to Plowshares
78%inclusion772 decks991 decks
17%synergy
Pitiless Plunderer
74%inclusion735 decks991 decks
65%synergy
Carrion Feeder
71%inclusion706 decks991 decks
67%synergy
Bastion of Remembrance
71%inclusion706 decks991 decks
64%synergy
Ashnod's Altar
69%inclusion683 decks991 decks
63%synergy
Path to Exile
67%inclusion661 decks991 decks
19%synergy
Luminous Broodmoth
66%inclusion655 decks991 decks
63%synergy
Deadly Dispute
65%inclusion646 decks991 decks
53%synergy
Bartolomé del Presidio
63%inclusion621 decks991 decks
59%synergy
Skullclamp
62%inclusion611 decks991 decks
50%synergy
Game Changers
Demonic Tutor
25%inclusion252 decks991 decks
7%synergy
Smothering Tithe
18%inclusion178 decks991 decks
-2%synergy
Vampiric Tutor
17%inclusion171 decks991 decks
3%synergy
Enlightened Tutor
13%inclusion124 decks991 decks
-2%synergy
Bolas's Citadel
10%inclusion98 decks991 decks
2%synergy
Ancient Tomb
9.1%inclusion90 decks991 decks
-0%synergy
Orcish Bowmasters
8.0%inclusion79 decks991 decks
-0%synergy
Necropotence
7.7%inclusion76 decks991 decks
3%synergy
The One Ring
7.1%inclusion70 decks991 decks
-1%synergy
Imperial Seal
5.3%inclusion53 decks991 decks
0%synergy
Creatures
Corpse Knight
61%inclusion608 decks991 decks
56%synergy
Solemn Simulacrum
60%inclusion597 decks991 decks
48%synergy
Safehold Elite
60%inclusion3 decks5 decks
60%synergy
Devoted Druid
60%inclusion3 decks5 decks
57%synergy
Formidable Speaker
60%inclusion3 decks5 decks
56%synergy
Birds of Paradise
60%inclusion3 decks5 decks
32%synergy
Grim Haruspex
60%inclusion592 decks991 decks
57%synergy
Mikaeus, the Unhallowed
58%inclusion574 decks991 decks
56%synergy
Morbid Opportunist
57%inclusion566 decks991 decks
49%synergy
Scholar of New Horizons
56%inclusion556 decks991 decks
55%synergy
Woe Strider
53%inclusion526 decks991 decks
51%synergy
Warren Soultrader
53%inclusion524 decks991 decks
47%synergy
Gray Merchant of Asphodel
50%inclusion492 decks991 decks
41%synergy
Zack Fair
47%inclusion465 decks991 decks
45%synergy
Midnight Reaper
44%inclusion439 decks991 decks
41%synergy
Elenda, the Dusk Rose
42%inclusion413 decks991 decks
36%synergy
Vengeful Bloodwitch
41%inclusion407 decks991 decks
39%synergy
Witch Enchanter
38%inclusion377 decks991 decks
30%synergy
Rhys, the Evermore
36%inclusion331 decks911 decks
36%synergy
Sephiroth, Fabled SOLDIER
36%inclusion357 decks991 decks
34%synergy
Braids, Arisen Nightmare
33%inclusion331 decks991 decks
26%synergy
Sun Titan
32%inclusion319 decks991 decks
24%synergy
Syr Konrad, the Grim
31%inclusion311 decks991 decks
23%synergy
Yawgmoth, Thran Physician
31%inclusion303 decks991 decks
27%synergy
Welcoming Vampire
30%inclusion294 decks991 decks
24%synergy
Accursed Marauder
29%inclusion285 decks991 decks
23%synergy
Junji, the Midnight Sky
27%inclusion271 decks991 decks
25%synergy
Teysa Karlov
27%inclusion268 decks991 decks
23%synergy
Esper Sentinel
27%inclusion267 decks991 decks
8%synergy
Lotho, Corrupt Shirriff
26%inclusion258 decks991 decks
13%synergy
Emptiness
26%inclusion253 decks991 decks
25%synergy
Pawn of Ulamog
25%inclusion252 decks991 decks
23%synergy
Selfless Spirit
25%inclusion251 decks991 decks
21%synergy
The Duke, Rebel Sentry
25%inclusion241 decks952 decks
25%synergy
Bitterbloom Bearer
24%inclusion237 decks991 decks
21%synergy
Yahenni, Undying Partisan
21%inclusion211 decks991 decks
18%synergy
Voice of Victory
19%inclusion192 decks991 decks
13%synergy
Triskelion
18%inclusion181 decks991 decks
18%synergy
Spirited Companion
17%inclusion169 decks991 decks
13%synergy
Syr Vondam, Sunstar Exemplar
17%inclusion168 decks991 decks
15%synergy
Twilight Diviner
17%inclusion150 decks892 decks
15%synergy
Enduring Innocence
15%inclusion153 decks991 decks
11%synergy
Charismatic Conqueror
15%inclusion151 decks991 decks
12%synergy
Grand Abolisher
15%inclusion149 decks991 decks
6%synergy
Emeritus of Woe
15%inclusion40 decks269 decks
12%synergy
Agent Venom
15%inclusion145 decks991 decks
14%synergy
Loran of the Third Path
13%inclusion131 decks991 decks
6%synergy
Teysa, Orzhov Scion
13%inclusion127 decks991 decks
11%synergy
Shriekmaw
12%inclusion122 decks991 decks
10%synergy
Priest of Forgotten Gods
11%inclusion107 decks991 decks
9%synergy
Instants
Dark Ritual
62%inclusion611 decks991 decks
37%synergy
Village Rites
57%inclusion568 decks991 decks
48%synergy
Anguished Unmaking
46%inclusion454 decks991 decks
21%synergy
Corrupted Conviction
38%inclusion375 decks991 decks
33%synergy
Flare of Fortitude
31%inclusion308 decks991 decks
27%synergy
Generous Gift
30%inclusion300 decks991 decks
9%synergy
Despark
28%inclusion274 decks991 decks
15%synergy
Plumb the Forbidden
23%inclusion225 decks991 decks
20%synergy
Inkshield
21%inclusion212 decks991 decks
14%synergy
Fell the Profane
21%inclusion209 decks991 decks
12%synergy
Culling the Weak
18%inclusion180 decks991 decks
13%synergy
Fracture
16%inclusion161 decks991 decks
11%synergy
Malakir Rebirth
15%inclusion151 decks991 decks
7%synergy
Deadly Rollick
15%inclusion150 decks991 decks
1%synergy
Stroke of Midnight
15%inclusion144 decks991 decks
4%synergy
Duty Beyond Death
14%inclusion139 decks991 decks
12%synergy
Mortify
13%inclusion129 decks991 decks
2%synergy
Silence
13%inclusion127 decks991 decks
7%synergy
Teferi's Protection
13%inclusion124 decks991 decks
-3%synergy
Dawn's Truce
8.5%inclusion84 decks991 decks
2%synergy
Reprieve
7.8%inclusion77 decks991 decks
3%synergy
Flawless Maneuver
7.5%inclusion74 decks991 decks
-3%synergy
Imp's Mischief
7.3%inclusion72 decks991 decks
3%synergy
Flare of Malice
7.1%inclusion70 decks991 decks
5%synergy
Undying Evil
6.7%inclusion66 decks991 decks
6%synergy
Erode
6.4%inclusion19 decks297 decks
2%synergy
Clever Concealment
6.2%inclusion61 decks991 decks
1%synergy
Saw in Half
6.0%inclusion59 decks991 decks
2%synergy
Cabal Ritual
5.1%inclusion51 decks991 decks
-0%synergy
Sejiri Shelter
5.0%inclusion50 decks991 decks
2%synergy
Sorceries
Victimize
53%inclusion524 decks991 decks
40%synergy
Damn
49%inclusion490 decks991 decks
35%synergy
Reanimate
38%inclusion377 decks991 decks
19%synergy
Diabolic Intent
35%inclusion349 decks991 decks
28%synergy
Toxic Deluge
28%inclusion273 decks991 decks
10%synergy
Night's Whisper
26%inclusion256 decks991 decks
16%synergy
Austere Command
20%inclusion200 decks991 decks
9%synergy
Sign in Blood
16%inclusion157 decks991 decks
7%synergy
Blasphemous Edict
15%inclusion150 decks991 decks
10%synergy
Sevinne's Reclamation
13%inclusion128 decks991 decks
6%synergy
Rite of Oblivion
11%inclusion108 decks991 decks
9%synergy
Dread Return
10%inclusion98 decks991 decks
5%synergy
Feed the Swarm
10%inclusion97 decks991 decks
-6%synergy
Vindicate
8.7%inclusion86 decks991 decks
3%synergy
Living Death
8.0%inclusion79 decks991 decks
3%synergy
Diabolic Tutor
7.7%inclusion76 decks991 decks
2%synergy
Grim Tutor
6.4%inclusion63 decks991 decks
2%synergy
Agadeem's Awakening
6.3%inclusion62 decks991 decks
3%synergy
Wrath of God
6.3%inclusion62 decks991 decks
2%synergy
Exsanguinate
6.3%inclusion62 decks991 decks
-1%synergy
Morningtide's Light
6.1%inclusion60 decks991 decks
5%synergy
Raise the Past
5.7%inclusion56 decks991 decks
4%synergy
Farewell
5.7%inclusion56 decks991 decks
-6%synergy
Utility Artifacts
Phyrexian Altar
47%inclusion467 decks991 decks
44%synergy
Lightning Greaves
40%inclusion393 decks991 decks
15%synergy
Altar of Dementia
36%inclusion355 decks991 decks
34%synergy
Blasting Station
30%inclusion294 decks991 decks
29%synergy
Swiftfoot Boots
28%inclusion274 decks991 decks
1%synergy
Oketra's Monument
15%inclusion147 decks991 decks
13%synergy
Jet Medallion
10%inclusion103 decks991 decks
7%synergy
Pearl Medallion
10%inclusion99 decks991 decks
7%synergy
Spawning Pit
10%inclusion97 decks991 decks
9%synergy
Wayfarer's Bauble
7.1%inclusion70 decks991 decks
0%synergy
Enchantments
Goblin Bombardment
100%inclusion3 decks3 decks
94%synergy
Cathars' Crusade
57%inclusion561 decks991 decks
51%synergy
Solemnity
52%inclusion512 decks991 decks
51%synergy
Thran Vigil
40%inclusion394 decks991 decks
39%synergy
Phyrexian Arena
31%inclusion311 decks991 decks
16%synergy
The Meathook Massacre
30%inclusion299 decks991 decks
25%synergy
Black Market Connections
24%inclusion242 decks991 decks
12%synergy
Grave Pact
19%inclusion191 decks991 decks
15%synergy
Bitterblossom
17%inclusion171 decks991 decks
13%synergy
Sothera, the Supervoid
13%inclusion128 decks991 decks
12%synergy
Vampiric Rites
12%inclusion122 decks991 decks
10%synergy
Barrensteppe Siege
12%inclusion120 decks991 decks
10%synergy
Land Tax
10%inclusion97 decks991 decks
3%synergy
Funeral Room // Awakening Hall
10%inclusion95 decks991 decks
8%synergy
Grave Venerations
8.7%inclusion79 decks904 decks
7%synergy
Dictate of Erebos
7.6%inclusion75 decks991 decks
5%synergy
Animate Dead
7.3%inclusion72 decks991 decks
-1%synergy
Martyr's Cause
6.9%inclusion68 decks991 decks
6%synergy
Fanatical Devotion
6.7%inclusion66 decks991 decks
6%synergy
Felidar Retreat
6.5%inclusion64 decks991 decks
1%synergy
Skrelv's Hive
5.4%inclusion54 decks991 decks
4%synergy
Planeswalkers
Liliana, Dreadhorde General
13%inclusion129 decks991 decks
9%synergy
Artifacts
Sol Ring
91%inclusion900 decks991 decks
7%synergy
Arcane Signet
90%inclusion895 decks991 decks
18%synergy
Talisman of Hierarchy
71%inclusion702 decks991 decks
44%synergy
Orzhov Signet
64%inclusion634 decks991 decks
42%synergy
Phyrexian Altar
47%inclusion467 decks991 decks
44%synergy
Lightning Greaves
40%inclusion393 decks991 decks
15%synergy
Altar of Dementia
36%inclusion355 decks991 decks
34%synergy
Fellwar Stone
32%inclusion320 decks991 decks
12%synergy
Blasting Station
30%inclusion294 decks991 decks
29%synergy
Swiftfoot Boots
28%inclusion274 decks991 decks
1%synergy
Mind Stone
21%inclusion211 decks991 decks
7%synergy
Thought Vessel
16%inclusion155 decks991 decks
-2%synergy
Oketra's Monument
15%inclusion147 decks991 decks
13%synergy
The Soul Stone
13%inclusion130 decks991 decks
9%synergy
Jet Medallion
10%inclusion103 decks991 decks
7%synergy
Pearl Medallion
10%inclusion99 decks991 decks
7%synergy
Spawning Pit
10%inclusion97 decks991 decks
9%synergy
Crowded Crypt
7.7%inclusion76 decks991 decks
6%synergy
Commander's Sphere
7.4%inclusion73 decks991 decks
-3%synergy
Wayfarer's Bauble
7.1%inclusion70 decks991 decks
0%synergy
Lotus Petal
6.8%inclusion67 decks991 decks
-0%synergy
Utility Lands
Boseiju, Who Endures
60%inclusion3 decks5 decks
41%synergy
Bojuka Bog
43%inclusion422 decks991 decks
13%synergy
Phyrexian Tower
40%inclusion398 decks991 decks
31%synergy
High Market
34%inclusion334 decks991 decks
31%synergy
Reliquary Tower
24%inclusion236 decks991 decks
-6%synergy
Urborg, Tomb of Yawgmoth
24%inclusion234 decks991 decks
15%synergy
Vault of the Archangel
19%inclusion186 decks991 decks
7%synergy
Susur Secundi, Void Altar
17%inclusion173 decks991 decks
15%synergy
Abandoned Air Temple
17%inclusion162 decks952 decks
12%synergy
Nesting Grounds
15%inclusion151 decks991 decks
13%synergy
Midgar, City of Mako
14%inclusion136 decks991 decks
10%synergy
Takenuma, Abandoned Mire
13%inclusion128 decks991 decks
5%synergy
Cabal Coffers
10%inclusion104 decks991 decks
1%synergy
Westvale Abbey
10%inclusion100 decks991 decks
8%synergy
Spymaster's Vault
8.7%inclusion86 decks991 decks
6%synergy
Eiganjo, Seat of the Empire
8.0%inclusion79 decks991 decks
1%synergy
Command Beacon
7.1%inclusion70 decks991 decks
2%synergy
Urza's Saga
6.3%inclusion62 decks991 decks
-1%synergy
Mana Artifacts
Sol Ring
91%inclusion900 decks991 decks
7%synergy
Arcane Signet
90%inclusion895 decks991 decks
18%synergy
Talisman of Hierarchy
71%inclusion702 decks991 decks
44%synergy
Orzhov Signet
64%inclusion634 decks991 decks
42%synergy
Fellwar Stone
32%inclusion320 decks991 decks
12%synergy
Mind Stone
21%inclusion211 decks991 decks
7%synergy
Thought Vessel
16%inclusion155 decks991 decks
-2%synergy
The Soul Stone
13%inclusion130 decks991 decks
9%synergy
Crowded Crypt
7.7%inclusion76 decks991 decks
6%synergy
Commander's Sphere
7.4%inclusion73 decks991 decks
-3%synergy
Lotus Petal
6.8%inclusion67 decks991 decks
-0%synergy
Lands
Temple Garden
100%inclusion5 decks5 decks
60%synergy
Command Tower
90%inclusion887 decks991 decks
15%synergy
Overgrown Tomb
80%inclusion4 decks5 decks
38%synergy
Isolated Chapel
79%inclusion783 decks991 decks
44%synergy
Caves of Koilos
69%inclusion688 decks991 decks
40%synergy
Godless Shrine
62%inclusion618 decks991 decks
21%synergy
Tainted Field
60%inclusion599 decks991 decks
48%synergy
Lush Portico
60%inclusion3 decks5 decks
51%synergy
Underground Mortuary
60%inclusion3 decks5 decks
47%synergy
Undergrowth Stadium
60%inclusion3 decks5 decks
36%synergy
Fetid Heath
60%inclusion593 decks991 decks
45%synergy
Shattered Sanctum
54%inclusion532 decks991 decks
37%synergy
Shineshadow Snarl
49%inclusion488 decks991 decks
37%synergy
Bleachbone Verge
42%inclusion420 decks991 decks
34%synergy
Vault of Champions
42%inclusion414 decks991 decks
18%synergy
Marsh Flats
36%inclusion357 decks991 decks
26%synergy
Exotic Orchard
31%inclusion311 decks991 decks
-5%synergy
Brightclimb Pathway
31%inclusion308 decks991 decks
23%synergy
Temple of Silence
30%inclusion302 decks991 decks
14%synergy
Shadowy Backstreet
29%inclusion291 decks991 decks
19%synergy
Desolate Mire
28%inclusion282 decks991 decks
22%synergy
Orzhov Basilica
27%inclusion268 decks991 decks
13%synergy
Concealed Courtyard
20%inclusion194 decks991 decks
14%synergy
Evolving Wilds
16%inclusion157 decks991 decks
-4%synergy
Silent Clearing
14%inclusion136 decks991 decks
9%synergy
Scrubland
12%inclusion123 decks991 decks
-1%synergy
Scoured Barrens
11%inclusion105 decks991 decks
2%synergy
Turbulent Moor
10%inclusion32 decks307 decks
4%synergy
Fabled Passage
10%inclusion103 decks991 decks
0%synergy
Terramorphic Expanse
9.5%inclusion94 decks991 decks
-5%synergy
Eclipsed Steppe
9.4%inclusion29 decks307 decks
4%synergy
Myriad Landscape
9.4%inclusion93 decks991 decks
-5%synergy
Polluted Delta
9.2%inclusion91 decks991 decks
-3%synergy
Sunlit Marsh
9.0%inclusion89 decks991 decks
5%synergy
Bloodstained Mire
9.0%inclusion89 decks991 decks
-2%synergy
Flooded Strand
8.6%inclusion85 decks991 decks
-3%synergy
Arid Mesa
7.7%inclusion76 decks991 decks
-2%synergy
Verdant Catacombs
7.6%inclusion75 decks991 decks
-3%synergy
Windswept Heath
7.1%inclusion70 decks991 decks
-4%synergy
Path of Ancestry
6.5%inclusion64 decks991 decks
-16%synergy
City of Brass
5.2%inclusion52 decks991 decks
-2%synergy