Shirei, Shizo's Caretaker + Coretapper + Magistrate's Scepter

Shirei, Shizo's Caretaker
Coretapper
Magistrate's Scepter

Requires
Shirei, Shizo's Caretaker must be on the battlefield. Coretapper must be on the battlefield. Magistrate's Scepter must be on the battlefield. Coretapper does not have summoning sickness.
Steps
  1. Activate Coretapper's first ability by tapping it, putting a charge counter on Magistrate's Scepter.
  2. Activate Coretapper's second ability by sacrificing it.
  3. When Coretapper dies, Shirei triggers, creating a delayed triggered ability.
  4. Resolve Coretapper's ability, putting two charge counters on Magistrate's Scepter.
  5. Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, taking an extra turn after this one.
  6. At the beginning of your end step, Shirei's delayed ability from step 3 triggers, returning Coretapper from your graveyard to the battlefield.
  7. Repeat each turn.
Results
Infinite turns.

Shirei, Shizo's Caretaker
4.99% of 5427 decks 271 decks
The Mycotyrant
0.03% of 7254 decks 2 decks
Sauron, the Necromancer
0.13% of 776 decks 1 decks
Urtet, Remnant of Memnarch
0.01% of 14706 decks 1 decks
Meren of Clan Nel Toth
0.01% of 15166 decks 1 decks
Seizan, Perverter of Truth
0.12% of 839 decks 1 decks
Urza, Chief Artificer
0.01% of 13791 decks 1 decks
Nethroi, Apex of Death
0.02% of 5825 decks 1 decks
New Cards
Blasphemous Edict
71% of 7 decks +37% synergy
Withering Torment
50% of 18 decks +31% synergy
Final Vengeance
36% of 22 decks +34% synergy
Vengeful Bloodwitch
17% of 29 decks +15% synergy
Meathook Massacre II
17% of 24 decks +12% synergy
High Synergy Cards
Viscera Seer
87% of 279 decks +78% synergy
Greedy Freebooter
77% of 123 decks +75% synergy
Zulaport Cutthroat
85% of 279 decks +75% synergy
Serrated Scorpion
73% of 277 decks +73% synergy
Bone Shredder
72% of 279 decks +71% synergy
Blood Artist
78% of 279 decks +66% synergy
Dusk Legion Zealot
67% of 279 decks +66% synergy
Blood Pet
66% of 279 decks +65% synergy
Ashnod's Altar
70% of 279 decks +62% synergy
Shambling Ghast
63% of 267 decks +62% synergy
Top Cards
Sakura-Tribe Elder
80% of 5 decks +62% synergy
Dark Ritual
67% of 279 decks +45% synergy
Pitiless Plunderer
64% of 279 decks +56% synergy
Cadaver Imp
62% of 279 decks +61% synergy
Carrion Feeder
62% of 279 decks +57% synergy
Feed the Swarm
61% of 274 decks +42% synergy
Skyscanner
60% of 278 decks +60% synergy
Marionette Apprentice
60% of 63 decks +53% synergy
Big Game Hunter
60% of 279 decks +59% synergy
Abyssal Gatekeeper
58% of 279 decks +57% synergy
Creatures
Cankerbloom
75% of 4 decks +68% synergy
Hermit Druid
60% of 5 decks +59% synergy
Skull Prophet
60% of 5 decks +55% synergy
Ayara, First of Locthwain
57% of 278 decks +53% synergy
Novice Occultist
57% of 263 decks +56% synergy
Syr Konrad, the Grim
55% of 278 decks +46% synergy
Skullport Merchant
54% of 267 decks +54% synergy
Grim Haruspex
54% of 279 decks +50% synergy
Pilgrim's Eye
48% of 279 decks +48% synergy
Sling-Gang Lieutenant
48% of 278 decks +47% synergy
Priest of Forgotten Gods
47% of 278 decks +45% synergy
Clattering Augur
45% of 269 decks +45% synergy
Pawn of Ulamog
44% of 279 decks +42% synergy
Burglar Rat
44% of 278 decks +43% synergy
Gray Merchant of Asphodel
44% of 279 decks +35% synergy
Morbid Opportunist
43% of 263 decks +38% synergy
Disciple of Perdition
42% of 236 decks +42% synergy
Virus Beetle
42% of 260 decks +41% synergy
Warren Soultrader
40% of 63 decks +32% synergy
Fume Spitter
39% of 279 decks +39% synergy
Reassembling Skeleton
39% of 279 decks +35% synergy
Tattered Mummy
38% of 279 decks +38% synergy
Leaden Myr
38% of 279 decks +36% synergy
Mindless Automaton
36% of 279 decks +36% synergy
Weaponcraft Enthusiast
34% of 279 decks +34% synergy
Yarok's Fenlurker
33% of 278 decks +32% synergy
Bloodthrone Vampire
32% of 279 decks +32% synergy
Nezumi Informant
31% of 196 decks +30% synergy
Bottle Gnomes
31% of 279 decks +31% synergy
Doomed Dissenter
30% of 279 decks +30% synergy
Elderfang Disciple
26% of 271 decks +25% synergy
Snarling Gorehound
25% of 91 decks +24% synergy
Perilous Myr
25% of 279 decks +25% synergy
Unscrupulous Agent
25% of 89 decks +25% synergy
Drivnod, Carnage Dominus
25% of 220 decks +21% synergy
Soldevi Adnate
24% of 279 decks +24% synergy
Smothering Abomination
24% of 279 decks +23% synergy
Thoughtpicker Witch
24% of 279 decks +24% synergy
Dockside Chef
23% of 260 decks +22% synergy
Butcher of Malakir
21% of 279 decks +18% synergy
Orcish Bowmasters
21% of 176 decks +10% synergy
Elvish Doomsayer
21% of 273 decks +21% synergy
Crypt Ghast
20% of 279 decks +15% synergy
Gleaming Barrier
18% of 279 decks +18% synergy
Dutiful Attendant
18% of 279 decks +18% synergy
Ornithopter of Paradise
18% of 269 decks +13% synergy
Basal Thrull
17% of 279 decks +17% synergy
Valgavoth's Faithful
17% of 24 decks +16% synergy
Skittering Surveyor
16% of 279 decks +16% synergy
Falkenrath Noble
16% of 279 decks +14% synergy
Instants
Shared Summons
60% of 5 decks +59% synergy
Tragic Slip
58% of 279 decks +54% synergy
Village Rites
55% of 277 decks +45% synergy
Corrupted Conviction
43% of 202 decks +37% synergy
Deadly Dispute
42% of 267 decks +31% synergy
Plumb the Forbidden
32% of 269 decks +29% synergy
Defile
27% of 278 decks +23% synergy
Culling the Weak
24% of 279 decks +20% synergy
Consuming Corruption
21% of 47 decks +19% synergy
Vampiric Tutor
21% of 279 decks +3% synergy
Infernal Grasp
21% of 263 decks +13% synergy
Eviscerator's Insight
19% of 48 decks +17% synergy
Malakir Rebirth
18% of 274 decks +10% synergy
Armor of Shadows
17% of 253 decks +16% synergy
Body Count
17% of 253 decks +16% synergy
Flare of Malice
17% of 65 decks +14% synergy
Altar's Reap
16% of 279 decks +15% synergy
Undying Malice
15% of 260 decks +13% synergy
Go for the Throat
15% of 279 decks +8% synergy
Not Dead After All
15% of 135 decks +11% synergy
Reckoner's Bargain
13% of 260 decks +11% synergy
Costly Plunder
13% of 279 decks +11% synergy
Mausoleum Secrets
12% of 278 decks +11% synergy
Imp's Mischief
11% of 279 decks +8% synergy
Fell the Profane
11% of 63 decks -0% synergy
Professor's Warning
10% of 269 decks +10% synergy
Nasty End
10% of 176 decks +7% synergy
Feign Death
9% of 267 decks +7% synergy
Thrilling Encore
9% of 278 decks +8% synergy
Deadly Rollick
9% of 277 decks -2% synergy
Supernatural Stamina
8% of 279 decks +6% synergy
Wake the Dead
8% of 279 decks +7% synergy
Murder
8% of 279 decks +4% synergy
Overwhelming Remorse
7% of 241 decks +7% synergy
Cabal Ritual
6% of 279 decks +2% synergy
Doom Blade
6% of 279 decks +4% synergy
Songs of the Damned
5% of 279 decks +4% synergy
Sorceries
Three Visits
60% of 5 decks +35% synergy
Victimize
42% of 279 decks +30% synergy
Diabolic Intent
36% of 279 decks +27% synergy
Eaten Alive
36% of 263 decks +35% synergy
Bone Shards
32% of 269 decks +30% synergy
Demonic Tutor
27% of 279 decks +4% synergy
Sign in Blood
24% of 279 decks +14% synergy
Pitiless Carnage
23% of 74 decks +22% synergy
Diabolic Tutor
21% of 279 decks +15% synergy
Spark Harvest
20% of 278 decks +20% synergy
Toxic Deluge
19% of 279 decks +2% synergy
Season of Loss
18% of 38 decks +16% synergy
Mutilate
18% of 279 decks +16% synergy
Annihilating Glare
17% of 209 decks +16% synergy
Dread Return
16% of 279 decks +11% synergy
Living Death
16% of 279 decks +10% synergy
Exsanguinate
14% of 279 decks +9% synergy
Reanimate
14% of 279 decks -2% synergy
Insatiable Avarice
14% of 74 decks +9% synergy
Damnation
13% of 279 decks +5% synergy
Night's Whisper
13% of 279 decks +4% synergy
Torment of Hailfire
12% of 279 decks +7% synergy
Demonic Counsel
11% of 27 decks +7% synergy
Unearth
11% of 279 decks +7% synergy
Bone Splinters
10% of 279 decks +9% synergy
Bubbling Muck
10% of 279 decks +8% synergy
Read the Bones
10% of 279 decks +2% synergy
Bankrupt in Blood
8% of 278 decks +7% synergy
Grim Tutor
8% of 279 decks +3% synergy
Imperial Seal
8% of 279 decks +2% synergy
Beseech the Mirror
7% of 137 decks +2% synergy
Lash of the Balrog
6% of 158 decks +6% synergy
Killing Wave
6% of 279 decks +6% synergy
Profane Tutor
6% of 269 decks +3% synergy
Eliminate the Competition
6% of 279 decks +6% synergy
Lively Dirge
5% of 74 decks +3% synergy
Beseech the Queen
5% of 279 decks +4% synergy
Utility Artifacts
Swiftfoot Boots
57% of 279 decks +29% synergy
Skullclamp
49% of 279 decks +36% synergy
Lightning Greaves
48% of 279 decks +22% synergy
Desecrated Tomb
42% of 278 decks +42% synergy
Phyrexian Altar
35% of 279 decks +31% synergy
Mithril Coat
31% of 158 decks +25% synergy
Jet Medallion
27% of 279 decks +24% synergy
Nim Deathmantle
25% of 279 decks +24% synergy
Bolas's Citadel
23% of 278 decks +14% synergy
Genesis Chamber
19% of 279 decks +18% synergy
Bontu's Monument
17% of 279 decks +15% synergy
Spawning Pit
15% of 279 decks +15% synergy
Meekstone
15% of 279 decks +14% synergy
Vat of Rebirth
14% of 209 decks +11% synergy
Lightning Coils
14% of 279 decks +14% synergy
Wayfarer's Bauble
13% of 279 decks +3% synergy
Altar of Dementia
12% of 279 decks +9% synergy
Mask of Avacyn
10% of 279 decks +9% synergy
Expedition Map
8% of 279 decks +5% synergy
Weatherlight Compleated
8% of 248 decks +7% synergy
Darksteel Plate
7% of 279 decks +5% synergy
Sensei's Divining Top
5% of 279 decks -0% synergy
Mirror Shield
5% of 277 decks +5% synergy
Enchantments
Growing Rites of Itlimoc
60% of 5 decks +54% synergy
Doubling Season
60% of 5 decks +51% synergy
Into the Pit
57% of 14 decks +52% synergy
Bastion of Remembrance
54% of 277 decks +48% synergy
Dark Privilege
44% of 279 decks +44% synergy
Agent of the Iron Throne
42% of 253 decks +39% synergy
Black Market
41% of 279 decks +36% synergy
Soul Enervation
35% of 91 decks +35% synergy
Grave Pact
35% of 279 decks +31% synergy
Vampiric Rites
32% of 279 decks +29% synergy
Open the Graves
27% of 278 decks +26% synergy
Dictate of Erebos
26% of 279 decks +22% synergy
Kaya's Ghostform
19% of 278 decks +15% synergy
Blessing of Leeches
16% of 279 decks +16% synergy
Phyrexian Arena
16% of 279 decks +1% synergy
Contamination
16% of 279 decks +15% synergy
Attrition
15% of 279 decks +15% synergy
Dark Prophecy
15% of 279 decks +14% synergy
Blight Mound
14% of 269 decks +14% synergy
Gift of Doom
14% of 278 decks +13% synergy
Cultist of the Absolute
14% of 253 decks +13% synergy
Funeral Room // Awakening Hall
12% of 24 decks +7% synergy
Scavenger's Talent
12% of 34 decks +9% synergy
Necropotence
11% of 279 decks +5% synergy
Phyrexian Reclamation
8% of 279 decks +5% synergy
The Meathook Massacre
8% of 263 decks +3% synergy
Soul Channeling
6% of 279 decks +6% synergy
Exquisite Blood
6% of 279 decks +1% synergy
Revel in Riches
5% of 279 decks +2% synergy
Sanguine Bond
5% of 279 decks -0% synergy
Mind Slash
5% of 279 decks +5% synergy
Planeswalkers
Liliana, Dreadhorde General
8% of 278 decks +5% synergy
Utility Lands
Bojuka Bog
53% of 279 decks +23% synergy
Reliquary Tower
43% of 279 decks +13% synergy
Cabal Coffers
41% of 279 decks +30% synergy
Witch's Cottage
36% of 278 decks +32% synergy
High Market
34% of 279 decks +31% synergy
Cabal Stronghold
34% of 279 decks +30% synergy
Phyrexian Tower
30% of 279 decks +21% synergy
Mortuary Mire
27% of 279 decks +22% synergy
Urborg, Tomb of Yawgmoth
24% of 279 decks +14% synergy
Westvale Abbey
19% of 279 decks +17% synergy
Nykthos, Shrine to Nyx
19% of 279 decks +13% synergy
Barren Moor
18% of 279 decks +14% synergy
Crypt of Agadeem
15% of 279 decks +14% synergy
Spymaster's Vault
13% of 63 decks +9% synergy
Castle Locthwain
12% of 278 decks +7% synergy
Ancient Tomb
11% of 279 decks +1% synergy
Command Beacon
10% of 279 decks +6% synergy
War Room
10% of 273 decks +4% synergy
Three Tree City
10% of 40 decks +0% synergy
Takenuma, Abandoned Mire
10% of 260 decks -1% synergy
Temple of the False God
9% of 279 decks -0% synergy
Barad-dûr
9% of 176 decks +6% synergy
Thespian's Stage
8% of 279 decks +5% synergy
Polluted Mire
8% of 279 decks +7% synergy
Ghost Quarter
7% of 279 decks +5% synergy
Buried Ruin
6% of 279 decks +1% synergy
Hidden Necropolis
6% of 126 decks +5% synergy
Shizo, Death's Storehouse
6% of 279 decks +1% synergy
Memorial to Folly
5% of 279 decks +4% synergy
Mana Artifacts
Sol Ring
89% of 279 decks +4% synergy
Arcane Signet
60% of 278 decks -12% synergy
Charcoal Diamond
30% of 279 decks +25% synergy
Mind Stone
26% of 279 decks +9% synergy
Thought Vessel
24% of 279 decks +7% synergy
Commander's Sphere
12% of 279 decks -3% synergy
Jeweled Lotus
8% of 273 decks +3% synergy
Mana Crypt
8% of 279 decks -0% synergy
Fellwar Stone
8% of 279 decks -13% synergy
Crowded Crypt
8% of 263 decks +6% synergy
Springleaf Drum
8% of 279 decks +6% synergy
Nyx Lotus
6% of 277 decks +5% synergy
Throne of Eldraine
6% of 131 decks +4% synergy
Mana Vault
5% of 279 decks -1% synergy
Lands
Overgrown Tomb
80% of 5 decks +38% synergy
Bayou
60% of 5 decks +46% synergy
Myriad Landscape
30% of 279 decks +10% synergy
Demolition Field
7% of 241 decks +4% synergy
Command Tower
6% of 279 decks -68% synergy
Marsh Flats
5% of 279 decks -6% synergy
Bloodstained Mire
5% of 279 decks -5% synergy
Polluted Delta
5% of 279 decks -6% synergy