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
4.92% of 5330 decks 262 decks
The Mycotyrant
0.03% of 6901 decks 2 decks
Nethroi, Apex of Death
0.02% of 5695 decks 1 decks
Sauron, the Necromancer
0.14% of 730 decks 1 decks
Seizan, Perverter of Truth
0.12% of 805 decks 1 decks
Urtet, Remnant of Memnarch
0.01% of 14156 decks 1 decks
Meren of Clan Nel Toth
0.01% of 14905 decks 1 decks
Urza, Chief Artificer
0.01% of 14102 decks 1 decks
New Cards
Into the Pit
80% of 5 decks +73% synergy
Withering Torment
43% of 7 decks +21% synergy
Final Vengeance
40% of 10 decks +38% synergy
Meathook Massacre II
25% of 12 decks +20% synergy
Demonic Counsel
20% of 15 decks +15% synergy
High Synergy Cards
Greedy Freebooter
79% of 110 decks +77% synergy
Viscera Seer
86% of 270 decks +77% synergy
Zulaport Cutthroat
85% of 270 decks +75% synergy
Serrated Scorpion
73% of 268 decks +72% synergy
Bone Shredder
71% of 270 decks +70% synergy
Dusk Legion Zealot
67% of 270 decks +66% synergy
Blood Artist
78% of 270 decks +66% synergy
Blood Pet
67% of 270 decks +66% synergy
Ashnod's Altar
71% of 270 decks +64% synergy
Shambling Ghast
63% of 258 decks +62% synergy
Top Cards
Sakura-Tribe Elder
80% of 5 decks +61% synergy
Marionette Apprentice
69% of 49 decks +62% synergy
Dark Ritual
67% of 270 decks +45% synergy
Pitiless Plunderer
64% of 270 decks +56% synergy
Feed the Swarm
63% of 265 decks +44% synergy
Skyscanner
62% of 269 decks +62% synergy
Carrion Feeder
61% of 270 decks +56% synergy
Cadaver Imp
61% of 270 decks +61% synergy
Big Game Hunter
60% of 270 decks +59% synergy
Tragic Slip
59% of 270 decks +55% 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
58% of 269 decks +54% synergy
Abyssal Gatekeeper
57% of 270 decks +57% synergy
Novice Occultist
57% of 253 decks +57% synergy
Syr Konrad, the Grim
56% of 269 decks +47% synergy
Skullport Merchant
55% of 258 decks +55% synergy
Grim Haruspex
55% of 270 decks +51% synergy
Pilgrim's Eye
49% of 270 decks +48% synergy
Sling-Gang Lieutenant
48% of 269 decks +48% synergy
Clattering Augur
47% of 260 decks +47% synergy
Priest of Forgotten Gods
46% of 269 decks +44% synergy
Gray Merchant of Asphodel
44% of 270 decks +35% synergy
Burglar Rat
44% of 269 decks +43% synergy
Pawn of Ulamog
44% of 270 decks +41% synergy
Morbid Opportunist
43% of 253 decks +38% synergy
Warren Soultrader
43% of 49 decks +35% synergy
Virus Beetle
42% of 250 decks +42% synergy
Disciple of Perdition
42% of 222 decks +42% synergy
Fume Spitter
41% of 270 decks +40% synergy
Tattered Mummy
39% of 270 decks +39% synergy
Reassembling Skeleton
39% of 270 decks +35% synergy
Leaden Myr
37% of 270 decks +35% synergy
Mindless Automaton
36% of 270 decks +36% synergy
Weaponcraft Enthusiast
34% of 270 decks +33% synergy
Yarok's Fenlurker
33% of 269 decks +33% synergy
Bloodthrone Vampire
32% of 270 decks +31% synergy
Bottle Gnomes
31% of 270 decks +31% synergy
Doomed Dissenter
30% of 270 decks +30% synergy
Nezumi Informant
30% of 183 decks +28% synergy
Unscrupulous Agent
29% of 75 decks +29% synergy
Snarling Gorehound
26% of 77 decks +25% synergy
Dockside Chef
25% of 250 decks +24% synergy
Thoughtpicker Witch
25% of 270 decks +25% synergy
Soldevi Adnate
25% of 270 decks +24% synergy
Elderfang Disciple
25% of 262 decks +24% synergy
Drivnod, Carnage Dominus
25% of 206 decks +21% synergy
Perilous Myr
24% of 270 decks +24% synergy
Smothering Abomination
24% of 270 decks +23% synergy
Butcher of Malakir
21% of 270 decks +18% synergy
Orcish Bowmasters
21% of 163 decks +10% synergy
Elvish Doomsayer
21% of 264 decks +21% synergy
Valgavoth, Terror Eater
20% of 15 decks +14% synergy
Crypt Ghast
19% of 270 decks +14% synergy
Dutiful Attendant
18% of 270 decks +18% synergy
Gleaming Barrier
18% of 270 decks +18% synergy
Basal Thrull
17% of 270 decks +17% synergy
Ornithopter of Paradise
17% of 260 decks +13% synergy
Skittering Surveyor
16% of 270 decks +16% synergy
Instants
Shared Summons
60% of 5 decks +59% synergy
Village Rites
57% of 268 decks +47% synergy
Deadly Dispute
43% of 258 decks +32% synergy
Corrupted Conviction
43% of 189 decks +38% synergy
Plumb the Forbidden
33% of 260 decks +30% synergy
Defile
28% of 269 decks +24% synergy
Consuming Corruption
26% of 31 decks +23% synergy
Eviscerator's Insight
25% of 32 decks +23% synergy
Culling the Weak
23% of 270 decks +19% synergy
Vampiric Tutor
20% of 270 decks +2% synergy
Infernal Grasp
20% of 253 decks +12% synergy
Body Count
18% of 241 decks +17% synergy
Malakir Rebirth
18% of 265 decks +9% synergy
Flare of Malice
18% of 51 decks +14% synergy
Armor of Shadows
17% of 241 decks +16% synergy
Altar's Reap
16% of 270 decks +15% synergy
Undying Malice
16% of 250 decks +14% synergy
Not Dead After All
16% of 122 decks +12% synergy
Go for the Throat
15% of 270 decks +8% synergy
Reckoner's Bargain
14% of 250 decks +12% synergy
Costly Plunder
13% of 270 decks +12% synergy
Mausoleum Secrets
12% of 269 decks +12% synergy
Fell the Profane
12% of 49 decks +0% synergy
Imp's Mischief
11% of 270 decks +8% synergy
Professor's Warning
10% of 260 decks +10% synergy
Feign Death
10% of 258 decks +8% synergy
Nasty End
9% of 163 decks +7% synergy
Thrilling Encore
9% of 269 decks +8% synergy
Supernatural Stamina
8% of 270 decks +6% synergy
Deadly Rollick
8% of 268 decks -3% synergy
Murder
8% of 270 decks +4% synergy
Overwhelming Remorse
7% of 227 decks +6% synergy
Wake the Dead
7% of 270 decks +7% synergy
Cabal Ritual
7% of 270 decks +2% synergy
Doom Blade
6% of 270 decks +4% synergy
Sorceries
Three Visits
60% of 5 decks +35% synergy
Victimize
41% of 270 decks +29% synergy
Diabolic Intent
36% of 270 decks +27% synergy
Eaten Alive
36% of 253 decks +35% synergy
Bone Shards
32% of 260 decks +30% synergy
Demonic Tutor
27% of 270 decks +5% synergy
Pitiless Carnage
27% of 60 decks +25% synergy
Season of Loss
26% of 23 decks +23% synergy
Sign in Blood
23% of 270 decks +14% synergy
Diabolic Tutor
21% of 270 decks +15% synergy
Spark Harvest
20% of 269 decks +19% synergy
Toxic Deluge
19% of 270 decks +2% synergy
Mutilate
18% of 270 decks +16% synergy
Dread Return
17% of 270 decks +12% synergy
Annihilating Glare
17% of 196 decks +16% synergy
Living Death
16% of 270 decks +11% synergy
Exsanguinate
14% of 270 decks +9% synergy
Reanimate
14% of 270 decks -1% synergy
Night's Whisper
13% of 270 decks +4% synergy
Damnation
12% of 270 decks +4% synergy
Torment of Hailfire
11% of 270 decks +7% synergy
Unearth
11% of 270 decks +7% synergy
Read the Bones
10% of 270 decks +2% synergy
Bubbling Muck
10% of 270 decks +8% synergy
Bone Splinters
9% of 270 decks +8% synergy
Bankrupt in Blood
9% of 269 decks +8% synergy
Grim Tutor
8% of 270 decks +3% synergy
Lash of the Balrog
8% of 145 decks +7% synergy
Imperial Seal
7% of 270 decks +2% synergy
Insatiable Avarice
7% of 60 decks +2% synergy
Eliminate the Competition
6% of 270 decks +6% synergy
Killing Wave
6% of 270 decks +6% synergy
Profane Tutor
6% of 260 decks +3% synergy
Beseech the Mirror
6% of 124 decks +1% synergy
Beseech the Queen
5% of 270 decks +4% synergy
Utility Artifacts
Swiftfoot Boots
57% of 270 decks +30% synergy
Skullclamp
50% of 270 decks +38% synergy
Lightning Greaves
48% of 270 decks +23% synergy
Desecrated Tomb
43% of 269 decks +43% synergy
Phyrexian Altar
35% of 270 decks +31% synergy
Mithril Coat
32% of 145 decks +26% synergy
Jet Medallion
27% of 270 decks +24% synergy
Nim Deathmantle
24% of 270 decks +24% synergy
Bolas's Citadel
23% of 269 decks +14% synergy
Genesis Chamber
18% of 270 decks +17% synergy
Bontu's Monument
18% of 270 decks +16% synergy
Meekstone
15% of 270 decks +15% synergy
Spawning Pit
14% of 270 decks +14% synergy
Vat of Rebirth
14% of 196 decks +12% synergy
Lightning Coils
14% of 270 decks +14% synergy
Wayfarer's Bauble
14% of 270 decks +3% synergy
Altar of Dementia
13% of 270 decks +10% synergy
Mask of Avacyn
10% of 270 decks +9% synergy
Expedition Map
9% of 270 decks +5% synergy
Weatherlight Compleated
8% of 235 decks +8% synergy
Darksteel Plate
7% of 270 decks +5% synergy
Sensei's Divining Top
6% of 270 decks +0% synergy
Mirror Shield
5% of 268 decks +5% synergy
Enchantments
Growing Rites of Itlimoc
60% of 5 decks +54% synergy
Doubling Season
60% of 5 decks +51% synergy
Bastion of Remembrance
54% of 268 decks +48% synergy
Dark Privilege
44% of 270 decks +44% synergy
Agent of the Iron Throne
42% of 241 decks +39% synergy
Soul Enervation
40% of 77 decks +40% synergy
Black Market
40% of 270 decks +35% synergy
Grave Pact
34% of 270 decks +30% synergy
Vampiric Rites
32% of 270 decks +29% synergy
Open the Graves
28% of 269 decks +27% synergy
Dictate of Erebos
26% of 270 decks +22% synergy
Kaya's Ghostform
19% of 269 decks +15% synergy
Scavenger's Talent
16% of 19 decks +13% synergy
Blessing of Leeches
15% of 270 decks +15% synergy
Attrition
15% of 270 decks +14% synergy
Dark Prophecy
15% of 270 decks +14% synergy
Phyrexian Arena
15% of 270 decks +0% synergy
Cultist of the Absolute
15% of 241 decks +14% synergy
Contamination
15% of 270 decks +14% synergy
Gift of Doom
14% of 269 decks +14% synergy
Blight Mound
14% of 260 decks +13% synergy
Necropotence
11% of 270 decks +5% synergy
Phyrexian Reclamation
9% of 270 decks +5% synergy
The Meathook Massacre
8% of 253 decks +3% synergy
Soul Channeling
6% of 270 decks +6% synergy
Revel in Riches
6% of 270 decks +2% synergy
Exquisite Blood
5% of 270 decks +0% synergy
Planeswalkers
Liliana, Dreadhorde General
9% of 269 decks +5% synergy
Utility Lands
Bojuka Bog
54% of 270 decks +24% synergy
Reliquary Tower
42% of 270 decks +12% synergy
Cabal Coffers
41% of 270 decks +30% synergy
Witch's Cottage
36% of 269 decks +32% synergy
High Market
35% of 270 decks +32% synergy
Cabal Stronghold
34% of 270 decks +31% synergy
Phyrexian Tower
29% of 270 decks +21% synergy
Mortuary Mire
27% of 270 decks +22% synergy
Urborg, Tomb of Yawgmoth
23% of 270 decks +13% synergy
Westvale Abbey
19% of 270 decks +17% synergy
Barren Moor
18% of 270 decks +14% synergy
Nykthos, Shrine to Nyx
18% of 270 decks +13% synergy
Crypt of Agadeem
16% of 270 decks +14% synergy
Spymaster's Vault
14% of 49 decks +10% synergy
Castle Locthwain
13% of 269 decks +8% synergy
Three Tree City
12% of 25 decks +2% synergy
Ancient Tomb
11% of 270 decks +1% synergy
War Room
11% of 264 decks +4% synergy
Command Beacon
10% of 270 decks +5% synergy
Takenuma, Abandoned Mire
10% of 250 decks -1% synergy
Temple of the False God
9% of 270 decks -0% synergy
Thespian's Stage
9% of 270 decks +6% synergy
Barad-dûr
9% of 163 decks +6% synergy
Polluted Mire
8% of 270 decks +7% synergy
Ghost Quarter
7% of 270 decks +5% synergy
Hidden Necropolis
7% of 113 decks +6% synergy
Shizo, Death's Storehouse
6% of 270 decks +2% synergy
Buried Ruin
6% of 270 decks +1% synergy
Memorial to Folly
6% of 270 decks +5% synergy
Mana Artifacts
Sol Ring
89% of 270 decks +4% synergy
Arcane Signet
59% of 269 decks -13% synergy
Charcoal Diamond
30% of 270 decks +25% synergy
Mind Stone
27% of 270 decks +10% synergy
Thought Vessel
24% of 270 decks +7% synergy
Commander's Sphere
13% of 270 decks -3% synergy
Jeweled Lotus
9% of 264 decks +3% synergy
Mana Crypt
9% of 270 decks -0% synergy
Fellwar Stone
9% of 270 decks -13% synergy
Crowded Crypt
8% of 253 decks +7% synergy
Springleaf Drum
8% of 270 decks +6% synergy
Throne of Eldraine
7% of 118 decks +4% synergy
Nyx Lotus
7% of 268 decks +5% synergy
Mana Vault
5% of 270 decks -1% synergy
Lands
Overgrown Tomb
80% of 5 decks +37% synergy
Bayou
60% of 5 decks +46% synergy
Myriad Landscape
29% of 270 decks +10% synergy
Demolition Field
7% of 227 decks +4% synergy
Command Tower
6% of 270 decks -68% synergy