Eirdu, Carrier of Dawn
Phantom Train
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 Phantom Train 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 Phantom Train ability.
4
Activate Phantom Train 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 Phantom Train ability from step 4.
8
Repeat from step 4.

   Results

What do I get from this combo?
Infinite +1/+1 counters on a creature
Infinite ETB
Infinite LTB
Infinite death triggers
Infinite sacrifice triggers
Pitiless Plunderer
92%inclusion11 decks12 decks
75%synergy
Morbid Opportunist
83%inclusion10 decks12 decks
71%synergy
Cathars' Crusade
75%inclusion9 decks12 decks
70%synergy
Umbral Collar Zealot
75%inclusion9 decks12 decks
67%synergy
Mikaeus, the Unhallowed
67%inclusion8 decks12 decks
65%synergy
Geralf's Messenger
58%inclusion7 decks12 decks
58%synergy
Bastion of Remembrance
75%inclusion9 decks12 decks
57%synergy
Zack Fair
58%inclusion7 decks12 decks
55%synergy
Vizier of Remedies
50%inclusion6 decks12 decks
49%synergy
Marionette Apprentice
58%inclusion7 decks12 decks
49%synergy
Top Cards
Elas il-Kor, Sadistic Pilgrim
75%inclusion9 decks12 decks
42%synergy
Deadly Dispute
67%inclusion8 decks12 decks
44%synergy
Cruel Celebrant
67%inclusion8 decks12 decks
42%synergy
Bartolomé del Presidio
58%inclusion7 decks12 decks
43%synergy
Ashnod's Altar
58%inclusion7 decks12 decks
40%synergy
Swords to Plowshares
58%inclusion7 decks12 decks
-5%synergy
Ayara, First of Locthwain
50%inclusion6 decks12 decks
46%synergy
Vengeful Bloodwitch
50%inclusion6 decks12 decks
45%synergy
Warren Soultrader
50%inclusion6 decks12 decks
41%synergy
Solemn Simulacrum
50%inclusion6 decks12 decks
35%synergy
Creatures
Viscera Seer
50%inclusion6 decks12 decks
30%synergy
Susurian Voidborn
42%inclusion5 decks12 decks
40%synergy
Scholar of New Horizons
42%inclusion5 decks12 decks
39%synergy
Woe Strider
42%inclusion5 decks12 decks
38%synergy
Syr Konrad, the Grim
42%inclusion5 decks12 decks
34%synergy
Zulaport Cutthroat
42%inclusion5 decks12 decks
20%synergy
Blood Artist
42%inclusion5 decks12 decks
12%synergy
Rhys, the Evermore
36%inclusion4 decks11 decks
35%synergy
Triskelion
33%inclusion4 decks12 decks
33%synergy
Yahenni, Undying Partisan
33%inclusion4 decks12 decks
24%synergy
Braids, Arisen Nightmare
33%inclusion4 decks12 decks
22%synergy
Witch Enchanter
33%inclusion4 decks12 decks
21%synergy
The Duke, Rebel Sentry
27%inclusion3 decks11 decks
26%synergy
Rakdos Drake
25%inclusion3 decks12 decks
25%synergy
Falkenrath Torturer
25%inclusion3 decks12 decks
25%synergy
Dross Hopper
25%inclusion3 decks12 decks
25%synergy
Bloodcrazed Paladin
25%inclusion3 decks12 decks
25%synergy
Shilgengar, Sire of Famine
25%inclusion3 decks12 decks
24%synergy
Venerated Stormsinger
25%inclusion3 decks12 decks
24%synergy
Al Bhed Salvagers
25%inclusion3 decks12 decks
24%synergy
Agent Venom
25%inclusion3 decks12 decks
23%synergy
Rune-Scarred Demon
25%inclusion3 decks12 decks
23%synergy
Greedy Freebooter
25%inclusion3 decks12 decks
22%synergy
Falkenrath Noble
25%inclusion3 decks12 decks
20%synergy
Yawgmoth, Thran Physician
25%inclusion3 decks12 decks
19%synergy
Pawn of Ulamog
25%inclusion3 decks12 decks
18%synergy
Sephiroth, Fabled SOLDIER
25%inclusion3 decks12 decks
18%synergy
Luminous Broodmoth
25%inclusion3 decks12 decks
17%synergy
Carrion Feeder
25%inclusion3 decks12 decks
16%synergy
Corpse Knight
25%inclusion3 decks12 decks
13%synergy
Elenda, the Dusk Rose
25%inclusion3 decks12 decks
6%synergy
Instants
Village Rites
50%inclusion6 decks12 decks
28%synergy
Path to Exile
50%inclusion6 decks12 decks
1%synergy
Duty Beyond Death
42%inclusion5 decks12 decks
39%synergy
Anguished Unmaking
33%inclusion4 decks12 decks
-8%synergy
Sorceries
Victimize
42%inclusion5 decks12 decks
24%synergy
Damn
33%inclusion4 decks12 decks
1%synergy
Diabolic Tutor
25%inclusion3 decks12 decks
19%synergy
Exsanguinate
25%inclusion3 decks12 decks
12%synergy
Reanimate
25%inclusion3 decks12 decks
9%synergy
Utility Artifacts
Skullclamp
50%inclusion6 decks12 decks
23%synergy
Swiftfoot Boots
42%inclusion5 decks12 decks
17%synergy
Altar of Dementia
33%inclusion4 decks12 decks
29%synergy
Phyrexian Altar
33%inclusion4 decks12 decks
22%synergy
Lightning Greaves
25%inclusion3 decks12 decks
5%synergy
Enchantments
Phyrexian Arena
42%inclusion5 decks12 decks
13%synergy
The Meathook Massacre
33%inclusion4 decks12 decks
23%synergy
Case of the Stashed Skeleton
25%inclusion3 decks12 decks
24%synergy
Agent of the Iron Throne
25%inclusion3 decks12 decks
23%synergy
Vampiric Rites
25%inclusion3 decks12 decks
18%synergy
Artifacts
Arcane Signet
83%inclusion10 decks12 decks
3%synergy
Sol Ring
75%inclusion9 decks12 decks
-9%synergy
Skullclamp
50%inclusion6 decks12 decks
23%synergy
Swiftfoot Boots
42%inclusion5 decks12 decks
17%synergy
Altar of Dementia
33%inclusion4 decks12 decks
29%synergy
Phyrexian Altar
33%inclusion4 decks12 decks
22%synergy
Talisman of Hierarchy
33%inclusion4 decks12 decks
-20%synergy
Lightning Greaves
25%inclusion3 decks12 decks
5%synergy
Mind Stone
25%inclusion3 decks12 decks
3%synergy
Utility Lands
Midgar, City of Mako
33%inclusion4 decks12 decks
28%synergy
Nesting Grounds
25%inclusion3 decks12 decks
21%synergy
Reliquary Tower
25%inclusion3 decks12 decks
2%synergy
Mana Artifacts
Arcane Signet
83%inclusion10 decks12 decks
3%synergy
Sol Ring
75%inclusion9 decks12 decks
-9%synergy
Talisman of Hierarchy
33%inclusion4 decks12 decks
-20%synergy
Mind Stone
25%inclusion3 decks12 decks
3%synergy
Lands
Command Tower
67%inclusion8 decks12 decks
-20%synergy
Godless Shrine
42%inclusion5 decks12 decks
-10%synergy
Caves of Koilos
42%inclusion5 decks12 decks
-16%synergy
Isolated Chapel
42%inclusion5 decks12 decks
-26%synergy
Evolving Wilds
33%inclusion4 decks12 decks
14%synergy
Scoured Barrens
33%inclusion4 decks12 decks
11%synergy
Bleachbone Verge
33%inclusion4 decks12 decks
9%synergy
Shattered Sanctum
33%inclusion4 decks12 decks
-5%synergy
Vault of Champions
33%inclusion4 decks12 decks
-6%synergy
Misty Palms Oasis
27%inclusion3 decks11 decks
26%synergy
Insomnia, Crown City
25%inclusion3 decks12 decks
23%synergy
Thriving Heath
25%inclusion3 decks12 decks
22%synergy
Desolate Mire
25%inclusion3 decks12 decks
7%synergy
Concealed Courtyard
25%inclusion3 decks12 decks
4%synergy
Exotic Orchard
25%inclusion3 decks12 decks
-1%synergy
Shineshadow Snarl
25%inclusion3 decks12 decks
-17%synergy
Fetid Heath
25%inclusion3 decks12 decks
-17%synergy
Tainted Field
25%inclusion3 decks12 decks
-25%synergy