Prowling Geistcatcher + Kiki-Jiki, Mirror Breaker + Altar of Dementia

Prowling Geistcatcher
Kiki-Jiki, Mirror Breaker
Altar of Dementia

Requires
Prowling Geistcatcher must be on the battlefield. Kiki-Jiki, Mirror Breaker must be on the battlefield. Altar of Dementia must be on the battlefield.
Steps
  1. Activate Kiki-Jiki by tapping it, creating a token copy of Prowling Geistcatcher with haste.
  2. Activate Altar of Dementia by sacrificing Kiki-Jiki.
  3. When Kiki-Jiki dies, the nontoken and token Prowling Geistcatcher's first abilities trigger.
  4. Resolve the token Prowling Geistcatcher's trigger, exiling Kiki-Jiki from your graveyard.
  5. Resolve the nontoken Prowling Geistcatcher's trigger, doing nothing.
  6. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Kiki-Jiki's power.
  7. Activate Altar of Dementia by sacrificing the Prowling Geistcatcher token.
  8. When the token Prowling Geistcatcher dies, its second ability and the nontoken Prowling Geistcatcher's first ability triggers.
  9. Resolve the nontoken Prowling Geistcatcher trigger, putting a +1/+1 counter on it.
  10. Resolve the token Prowling Geistcatcher trigger, returning Kiki-Jiki from exile to the battlefield.
  11. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the token Prowling Geistcatcher's power.
  12. Repeat.
Results
Infinite +1/+1 counters on Prowling Geistcatcher. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite mill. Infinite sacrifice triggers. Infinite self-mill.

Alesha, Who Smiles at Death
0.28% of 6105 decks 17 decks
Rakdos, the Muscle
0.21% of 3880 decks 8 decks
Grenzo, Dungeon Warden
0.14% of 3559 decks 5 decks
Sauron, the Lidless Eye
0.40% of 499 decks 2 decks
Extus, Oriq Overlord
0.02% of 5679 decks 1 decks
Valki, God of Lies
0.06% of 1658 decks 1 decks
Thraximundar
0.05% of 1990 decks 1 decks
Ayara, Widow of the Realm
0.06% of 1777 decks 1 decks
The Beast, Deathless Prince
0.14% of 735 decks 1 decks
Olivia, Crimson Bride
0.04% of 2549 decks 1 decks
Kethek, Crucible Goliath
0.12% of 812 decks 1 decks
Kenrith, the Returned King
0.00% of 23838 decks 1 decks
Chainer, Nightmare Adept
0.03% of 3215 decks 1 decks
The Master, Multiplied
0.02% of 4761 decks 1 decks
Kroxa and Kunoros
0.04% of 2307 decks 1 decks
New Cards
Mardu Siegebreaker
100% of 1 decks +92% synergy
High Synergy Cards
Karmic Guide
100% of 20 decks +96% synergy
Reveillark
85% of 20 decks +83% synergy
Fiend Hunter
80% of 20 decks +79% synergy
Felidar Guardian
75% of 20 decks +73% synergy
Viscera Seer
74% of 43 decks +66% synergy
Goblin Bombardment
70% of 43 decks +64% synergy
Ashnod's Altar
67% of 43 decks +60% synergy
Sun Titan
65% of 20 decks +56% synergy
Phyrexian Altar
58% of 43 decks +54% synergy
Welcoming Vampire
50% of 20 decks +44% synergy
Top Cards
Swords to Plowshares
60% of 20 decks -3% synergy
Cruel Celebrant
50% of 20 decks +42% synergy
Selfless Spirit
45% of 20 decks +41% synergy
Faithless Looting
44% of 43 decks +28% synergy
Reanimate
44% of 43 decks +28% synergy
Pitiless Plunderer
42% of 43 decks +34% synergy
Animate Dead
42% of 43 decks +33% synergy
Zulaport Cutthroat
42% of 43 decks +33% synergy
Elas il-Kor, Sadistic Pilgrim
40% of 20 decks +30% synergy
Yawgmoth, Thran Physician
40% of 43 decks +36% synergy
Game Changers
Vampiric Tutor
30% of 43 decks +13% synergy
Demonic Tutor
30% of 43 decks +9% synergy
Smothering Tithe
20% of 20 decks -4% synergy
Ancient Tomb
19% of 43 decks +9% synergy
Enlightened Tutor
15% of 20 decks -2% synergy
Underworld Breach
9% of 43 decks +3% synergy
Jeska's Will
9% of 43 decks -7% synergy
Creatures
Witch Enchanter
40% of 15 decks +33% synergy
Imperial Recruiter
40% of 43 decks +34% synergy
Carrion Feeder
37% of 43 decks +32% synergy
Blood Artist
37% of 43 decks +26% synergy
Solemn Simulacrum
37% of 43 decks +24% synergy
Warren Soultrader
37% of 27 decks +32% synergy
Leonin Relic-Warder
35% of 20 decks +34% synergy
Skyclave Apparition
35% of 20 decks +32% synergy
Murderous Redcap
33% of 43 decks +31% synergy
Zealous Conscripts
33% of 43 decks +31% synergy
Gray Merchant of Asphodel
30% of 43 decks +21% synergy
Priest of Fell Rites
30% of 20 decks +28% synergy
Recruiter of the Guard
30% of 20 decks +27% synergy
Loran of the Third Path
30% of 20 decks +24% synergy
Ravenous Chupacabra
28% of 43 decks +24% synergy
Anger
28% of 43 decks +22% synergy
Pinnacle Monk
26% of 27 decks +22% synergy
Marionette Apprentice
26% of 27 decks +21% synergy
Master of Cruelties
26% of 43 decks +23% synergy
Preston, the Vanisher
25% of 20 decks +24% synergy
Mentor of the Meek
25% of 20 decks +19% synergy
Delney, Streetwise Lookout
24% of 17 decks +20% synergy
Braids, Arisen Nightmare
23% of 43 decks +16% synergy
Illuminor Szeras
21% of 43 decks +20% synergy
Pawn of Ulamog
21% of 43 decks +19% synergy
Jaxis, the Troublemaker
21% of 43 decks +19% synergy
Shriekmaw
21% of 43 decks +19% synergy
Grim Haruspex
21% of 43 decks +17% synergy
Professional Face-Breaker
21% of 43 decks +13% synergy
Mayhem Devil
21% of 43 decks +11% synergy
Cartel Aristocrat
20% of 20 decks +19% synergy
Sand Scout
20% of 15 decks +19% synergy
Anafenza, Kin-Tree Spirit
20% of 20 decks +19% synergy
Village Bell-Ringer
20% of 20 decks +19% synergy
Jirina, Dauntless General
20% of 20 decks +19% synergy
Luminous Broodmoth
20% of 20 decks +18% synergy
Grand Abolisher
20% of 20 decks +11% synergy
Esper Sentinel
20% of 20 decks +0% synergy
Seasoned Pyromancer
19% of 43 decks +18% synergy
Ingot Chewer
19% of 43 decks +18% synergy
Captivating Crew
19% of 43 decks +17% synergy
Puppeteer Clique
19% of 43 decks +17% synergy
Judith, the Scourge Diva
19% of 43 decks +17% synergy
Vile Entomber
19% of 43 decks +17% synergy
Feldon of the Third Path
19% of 43 decks +16% synergy
Yahenni, Undying Partisan
19% of 43 decks +15% synergy
Stitcher's Supplier
19% of 43 decks +15% synergy
Boggart Trawler
19% of 27 decks +15% synergy
Accursed Marauder
19% of 27 decks +13% synergy
Bartolomé del Presidio
18% of 17 decks +13% synergy
Instants
Entomb
33% of 43 decks +25% synergy
Teferi's Protection
30% of 20 decks +11% synergy
Anguished Unmaking
30% of 20 decks +6% synergy
Malakir Rebirth
26% of 43 decks +18% synergy
Deadly Dispute
26% of 43 decks +14% synergy
Rakdos Charm
26% of 43 decks +11% synergy
Generous Gift
25% of 20 decks +0% synergy
Path to Exile
25% of 20 decks -22% synergy
Dark Ritual
23% of 43 decks +1% synergy
Chaos Warp
23% of 43 decks -8% synergy
Village Rites
21% of 43 decks +11% synergy
Wear // Tear
20% of 20 decks +12% synergy
Boros Charm
20% of 20 decks -4% synergy
Ephemerate
15% of 20 decks +9% synergy
Crackling Doom
15% of 20 decks +7% synergy
Burnt Offering
14% of 43 decks +12% synergy
Saw in Half
14% of 43 decks +11% synergy
Culling the Weak
14% of 43 decks +10% synergy
Corrupted Conviction
12% of 43 decks +7% synergy
Valakut Awakening
12% of 43 decks +6% synergy
Deflecting Swat
12% of 43 decks -5% synergy
Terminate
12% of 43 decks -9% synergy
Fell the Profane
11% of 27 decks +3% synergy
Nasty End
10% of 42 decks +7% synergy
Act of Aggression
9% of 43 decks +9% synergy
Kazuul's Fury
9% of 43 decks +7% synergy
Tibalt's Trickery
9% of 43 decks +4% synergy
Deadly Rollick
9% of 43 decks -2% synergy
Sacrifice
7% of 43 decks +6% synergy
Reckoner's Bargain
7% of 43 decks +6% synergy
Supernatural Stamina
7% of 43 decks +5% synergy
Fling
7% of 43 decks +5% synergy
Wild Magic Surge
7% of 43 decks +4% synergy
Thrill of Possibility
7% of 43 decks -3% synergy
Bedevil
7% of 43 decks -7% synergy
Sorceries
Blasphemous Act
37% of 43 decks +4% synergy
Buried Alive
35% of 43 decks +29% synergy
Victimize
35% of 43 decks +23% synergy
Sevinne's Reclamation
30% of 20 decks +23% synergy
Diabolic Intent
28% of 43 decks +20% synergy
Toxic Deluge
28% of 43 decks +10% synergy
Gamble
26% of 43 decks +16% synergy
Damn
25% of 20 decks +9% synergy
Seize the Spotlight
23% of 43 decks +22% synergy
Vandalblast
23% of 43 decks +8% synergy
Agadeem's Awakening
21% of 43 decks +18% synergy
Thrilling Discovery
20% of 20 decks +18% synergy
Mythos of Snapdax
20% of 20 decks +17% synergy
Living Death
19% of 43 decks +13% synergy
Feed the Swarm
19% of 43 decks +1% synergy
Mob Rule
16% of 43 decks +15% synergy
Farewell
15% of 20 decks +2% synergy
Mass Mutiny
14% of 43 decks +13% synergy
Song-Mad Treachery
14% of 43 decks +13% synergy
Dread Return
14% of 43 decks +9% synergy
Furnace Reins
12% of 43 decks +11% synergy
Insurrection
12% of 43 decks +10% synergy
Damnation
12% of 43 decks +4% synergy
Traitorous Blood
9% of 43 decks +9% synergy
Unmarked Grave
9% of 43 decks +7% synergy
Cathartic Reunion
9% of 43 decks +6% synergy
Night's Whisper
9% of 43 decks +0% synergy
Molten Duplication
9% of 33 decks +7% synergy
Harness by Force
7% of 43 decks +7% synergy
Traitorous Greed
7% of 43 decks +7% synergy
Bloody Betrayal
7% of 43 decks +7% synergy
Kari Zev's Expertise
7% of 43 decks +6% synergy
Stitch Together
7% of 43 decks +5% synergy
Persist
7% of 43 decks +5% synergy
Rise of the Dark Realms
7% of 43 decks +3% synergy
Sign in Blood
7% of 43 decks -2% synergy
Utility Artifacts
Skullclamp
40% of 43 decks +28% synergy
Lightning Greaves
28% of 43 decks +3% synergy
Swiftfoot Boots
19% of 43 decks -9% synergy
Key to the City
16% of 43 decks +15% synergy
Wayfarer's Bauble
16% of 43 decks +7% synergy
Sunforger
15% of 20 decks +11% synergy
Heartstone
12% of 43 decks +11% synergy
Mimic Vat
12% of 43 decks +11% synergy
Commander's Sphere
12% of 43 decks -3% synergy
Mind Stone
12% of 43 decks -5% synergy
Nim Deathmantle
9% of 43 decks +9% synergy
Tel-Jilad Stylus
7% of 43 decks +7% synergy
The Golden Throne
7% of 43 decks +7% synergy
Blasting Station
7% of 43 decks +6% synergy
Sensei's Divining Top
7% of 43 decks +2% synergy
Enchantments
Reconnaissance
35% of 20 decks +33% synergy
Cathars' Crusade
20% of 20 decks +15% synergy
Sneak Attack
16% of 43 decks +14% synergy
Grave Pact
16% of 43 decks +12% synergy
Impact Tremors
16% of 43 decks +6% synergy
Dance of the Dead
14% of 43 decks +12% synergy
Fable of the Mirror-Breaker
14% of 43 decks +12% synergy
Necromancy
14% of 43 decks +11% synergy
Bastion of Remembrance
14% of 43 decks +8% synergy
Funeral Room // Awakening Hall
12% of 24 decks +10% synergy
Ripples of Undeath
11% of 27 decks +7% synergy
Industrial Advancement
9% of 43 decks +9% synergy
Phyrexian Reclamation
9% of 43 decks +6% synergy
Splinter Twin
7% of 43 decks +6% synergy
Bitter Reunion
7% of 43 decks +5% synergy
Vampiric Rites
7% of 43 decks +4% synergy
Dictate of Erebos
7% of 43 decks +4% synergy
Planeswalkers
Liliana, Dreadhorde General
14% of 43 decks +10% synergy
Utility Lands
Phyrexian Tower
47% of 43 decks +38% synergy
High Market
42% of 43 decks +39% synergy
Bojuka Bog
33% of 43 decks +3% synergy
Takenuma, Abandoned Mire
28% of 43 decks +18% synergy
Urborg, Tomb of Yawgmoth
26% of 43 decks +16% synergy
Castle Locthwain
21% of 43 decks +16% synergy
Shizo, Death's Storehouse
19% of 43 decks +14% synergy
Reliquary Tower
16% of 43 decks -13% synergy
Minas Tirith
16% of 19 decks +8% synergy
Eiganjo, Seat of the Empire
15% of 20 decks +7% synergy
Access Tunnel
14% of 43 decks +12% synergy
Rogue's Passage
12% of 43 decks -8% synergy
Spymaster's Vault
11% of 27 decks +8% synergy
Sokenzan, Crucible of Defiance
9% of 43 decks +5% synergy
Command Beacon
9% of 43 decks +5% synergy
Urza's Saga
9% of 43 decks +2% synergy
Restless Vents
8% of 40 decks +6% synergy
Hanweir Battlements
7% of 43 decks +6% synergy
Ghost Quarter
7% of 43 decks +5% synergy
Mortuary Mire
7% of 43 decks +2% synergy
Buried Ruin
7% of 43 decks +2% synergy
Cabal Coffers
7% of 43 decks -3% synergy
Mana Artifacts
Sol Ring
95% of 43 decks +11% synergy
Arcane Signet
79% of 43 decks +7% synergy
Rakdos Signet
53% of 43 decks +25% synergy
Talisman of Indulgence
40% of 43 decks +13% synergy
Boros Signet
35% of 20 decks +13% synergy
Fellwar Stone
30% of 43 decks +9% synergy
Talisman of Conviction
30% of 20 decks +6% synergy
Orzhov Signet
30% of 20 decks +3% synergy
Talisman of Hierarchy
25% of 20 decks -0% synergy
Cursed Mirror
14% of 43 decks +9% synergy
Lands
Command Tower
91% of 43 decks +16% synergy
Godless Shrine
70% of 20 decks +30% synergy
Dragonskull Summit
70% of 43 decks +38% synergy
Sacred Foundry
65% of 20 decks +30% synergy
Blood Crypt
63% of 43 decks +25% synergy
Savai Triome
50% of 20 decks +24% synergy
Exotic Orchard
49% of 43 decks +13% synergy
Sulfurous Springs
47% of 43 decks +25% synergy
Vault of Champions
45% of 20 decks +19% synergy
Smoldering Marsh
44% of 43 decks +11% synergy
Haunted Ridge
42% of 43 decks +26% synergy
Luxury Suite
42% of 43 decks +16% synergy
Spectator Seating
40% of 20 decks +15% synergy
Caves of Koilos
40% of 20 decks +11% synergy
Arid Mesa
37% of 43 decks +27% synergy
Bloodstained Mire
37% of 43 decks +27% synergy
Battlefield Forge
35% of 20 decks +9% synergy
Nomad Outpost
35% of 20 decks +7% synergy
Clifftop Retreat
35% of 20 decks +5% synergy
Raucous Theater
34% of 38 decks +24% synergy
Blightstep Pathway
33% of 43 decks +23% synergy
Elegant Parlor
29% of 17 decks +22% synergy
Shadowy Backstreet
29% of 17 decks +19% synergy
Tainted Peak
28% of 43 decks +17% synergy
Marsh Flats
28% of 43 decks +17% synergy
Shadowblood Ridge
26% of 43 decks +13% synergy
Temple of Malice
26% of 43 decks +11% synergy
Isolated Chapel
25% of 20 decks -5% synergy
Rakdos Carnarium
23% of 43 decks +9% synergy
Path of Ancestry
23% of 43 decks +2% synergy
Foreboding Ruins
21% of 43 decks +5% synergy
Temple of Triumph
20% of 20 decks +3% synergy
Lazotep Quarry
19% of 27 decks +18% synergy
Graven Cairns
16% of 43 decks +8% synergy
Myriad Landscape
16% of 43 decks -2% synergy
Sunbaked Canyon
15% of 20 decks +10% synergy
Needleverge Pathway
15% of 20 decks +6% synergy
Brightclimb Pathway
15% of 20 decks +5% synergy
Rugged Prairie
15% of 20 decks +4% synergy
Tainted Field
15% of 20 decks +1% synergy
Orzhov Basilica
15% of 20 decks -1% synergy
Mount Doom
14% of 43 decks +7% synergy
Canyon Slough
14% of 43 decks +7% synergy
Evolving Wilds
14% of 43 decks -7% synergy
Blazemire Verge
12% of 24 decks +2% synergy
Wooded Foothills
12% of 43 decks +1% synergy
Scalding Tarn
12% of 43 decks +1% synergy
Badlands
12% of 43 decks -2% synergy
Thriving Bluff
9% of 43 decks +7% synergy
Prismatic Vista
9% of 43 decks +4% synergy