Prowling Geistcatcher + Karmic Guide + Phyrexian Altar

Prowling Geistcatcher
Karmic Guide
Phyrexian Altar

Requires
Prowling Geistcatcher must be on the battlefield. Karmic Guide must be on the battlefield. Phyrexian Altar must be on the battlefield.
Steps
  1. Activate Phyrexian Altar by sacrificing Karmic Guide, adding one mana of any color.
  2. When Karmic Guide dies, Prowling Geistcatcher's first ability triggers, exiling Karmic Guide from your graveyard.
  3. Activate Phyrexian Altar by sacrificing Prowling Geistcatcher, adding one mana of any color.
  4. When Prowling Geistcatcher dies, its second ability triggers, returning Karmic Guide from exile to the battlefield.
  5. When Karmic Guide enters the battlefield, it triggers, returning Prowling Geistcatcher from your graveyard to the battlefield.
  6. Repeat.
Results
Infinite colored mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Extus, Oriq Overlord
0.47% of 5308 decks 25 decks
Alesha, Who Smiles at Death
0.22% of 5913 decks 13 decks
Teysa Karlov
0.06% of 15616 decks 10 decks
Karador, Ghost Chieftain
0.09% of 5423 decks 5 decks
Ayli, Eternal Pilgrim
0.25% of 1208 decks 3 decks
Athreos, God of Passage
0.05% of 6199 decks 3 decks
Liesa, Forgotten Archangel
0.13% of 2356 decks 3 decks
Elas il-Kor, Sadistic Pilgrim
0.05% of 6522 decks 3 decks
Bane, Lord of Darkness
0.14% of 2125 decks 3 decks
Teysa, Orzhov Scion
0.11% of 2754 decks 3 decks
Nethroi, Apex of Death
0.03% of 5825 decks 2 decks
Shilgengar, Sire of Famine
0.05% of 3877 decks 2 decks
Kenrith, the Returned King
0.01% of 21799 decks 2 decks
Elenda, the Dusk Rose
0.04% of 5373 decks 2 decks
Sefris of the Hidden Ways
0.01% of 8772 decks 1 decks
Othelm, Sigardian Outcast // Wernog, Rider's Chaplain
0.11% of 912 decks 1 decks
Ishai, Ojutai Dragonspeaker // Reyhan, Last of the Abzan
0.06% of 1572 decks 1 decks
Ghave, Guru of Spores
0.02% of 6440 decks 1 decks
High Synergy Cards
Goblin Bombardment
75% of 48 decks +69% synergy
Reveillark
69% of 103 decks +67% synergy
Viscera Seer
74% of 103 decks +65% synergy
Saffi Eriksdotter
61% of 18 decks +60% synergy
Zulaport Cutthroat
67% of 103 decks +57% synergy
Pitiless Plunderer
61% of 103 decks +54% synergy
Cruel Celebrant
61% of 103 decks +53% synergy
Phyrexian Tower
59% of 103 decks +51% synergy
Blood Artist
61% of 103 decks +49% synergy
Skullclamp
61% of 103 decks +49% synergy
Top Cards
Swords to Plowshares
67% of 103 decks +4% synergy
Path to Exile
52% of 103 decks +7% synergy
Dockside Extortionist
52% of 48 decks +40% synergy
Eternal Witness
50% of 18 decks +29% synergy
Grim Haruspex
50% of 103 decks +45% synergy
Ashnod's Altar
50% of 103 decks +42% synergy
Reanimate
50% of 103 decks +34% synergy
Victimize
49% of 103 decks +37% synergy
Yawgmoth, Thran Physician
48% of 103 decks +44% synergy
Anguished Unmaking
48% of 103 decks +23% synergy
Creatures
Imperial Recruiter
67% of 48 decks +61% synergy
Grist, Voracious Larva
60% of 5 decks +57% synergy
Metamorphosis Fanatic
50% of 6 decks +46% synergy
Mayhem Devil
46% of 48 decks +36% synergy
Pawn of Ulamog
45% of 103 decks +42% synergy
Anax, Hardened in the Forge
44% of 48 decks +43% synergy
Warren Soultrader
43% of 21 decks +36% synergy
Elenda, the Dusk Rose
42% of 103 decks +36% synergy
Sakura-Tribe Elder
39% of 18 decks +20% synergy
Birds of Paradise
39% of 18 decks +12% synergy
Yahenni, Undying Partisan
38% of 103 decks +35% synergy
Pinnacle Monk
38% of 8 decks +30% synergy
Morbid Opportunist
37% of 103 decks +31% synergy
Elas il-Kor, Sadistic Pilgrim
36% of 96 decks +25% synergy
Purphoros, God of the Forge
35% of 48 decks +31% synergy
Chasm Skulker
33% of 12 decks +29% synergy
Mulldrifter
33% of 12 decks +28% synergy
Wood Elves
33% of 18 decks +27% synergy
Woe Strider
33% of 103 decks +31% synergy
Carrion Feeder
33% of 103 decks +28% synergy
Sun Titan
33% of 103 decks +23% synergy
Nether Traitor
32% of 103 decks +31% synergy
Teysa Karlov
32% of 103 decks +27% synergy
Esper Sentinel
32% of 103 decks +12% synergy
Ophiomancer
31% of 103 decks +28% synergy
Hallowed Spiritkeeper
30% of 103 decks +29% synergy
Recruiter of the Guard
30% of 103 decks +27% synergy
Marionette Apprentice
29% of 21 decks +21% synergy
Mondrak, Glory Dominus
28% of 81 decks +19% synergy
Doomed Traveler
28% of 103 decks +27% synergy
Fauna Shaman
28% of 18 decks +25% synergy
Kiki-Jiki, Mirror Breaker
27% of 48 decks +24% synergy
Luminous Broodmoth
26% of 103 decks +24% synergy
Charismatic Conqueror
26% of 42 decks +21% synergy
Bartolomé del Presidio
26% of 46 decks +19% synergy
Hunted Witness
24% of 103 decks +24% synergy
Smothering Abomination
24% of 103 decks +23% synergy
Solemn Simulacrum
24% of 103 decks +10% synergy
Kami of Whispered Hopes
23% of 13 decks +16% synergy
Goblin Sharpshooter
23% of 48 decks +22% synergy
Garrison Cat
22% of 103 decks +22% synergy
Fiend Artisan
22% of 18 decks +20% synergy
Haywire Mite
22% of 18 decks +18% synergy
Reclamation Sage
22% of 18 decks +11% synergy
Carmen, Cruel Skymarcher
21% of 42 decks +17% synergy
Fiend Hunter
21% of 103 decks +20% synergy
Reassembling Skeleton
21% of 103 decks +18% synergy
Murderous Redcap
21% of 48 decks +19% synergy
Body Launderer
21% of 102 decks +20% synergy
Nested Shambler
20% of 103 decks +20% synergy
Instants
Village Rites
43% of 103 decks +33% synergy
Deadly Dispute
43% of 103 decks +32% synergy
Beast Within
39% of 18 decks +0% synergy
Generous Gift
39% of 103 decks +13% synergy
Plumb the Forbidden
33% of 103 decks +30% synergy
Despark
31% of 103 decks +16% synergy
Corrupted Conviction
30% of 67 decks +24% synergy
Body Count
25% of 102 decks +25% synergy
Entomb
25% of 103 decks +18% synergy
Vampiric Tutor
25% of 103 decks +7% synergy
Call the Coppercoats
22% of 103 decks +19% synergy
Assassin's Trophy
22% of 18 decks -8% synergy
Lethal Scheme
20% of 102 decks +18% synergy
Enlightened Tutor
19% of 103 decks +2% synergy
Thrill of Possibility
19% of 48 decks +8% synergy
Teferi's Protection
18% of 103 decks -1% synergy
Dark Ritual
16% of 103 decks -7% synergy
Wear // Tear
15% of 48 decks +7% synergy
Chaos Warp
15% of 48 decks -17% synergy
Malakir Rebirth
15% of 103 decks +6% synergy
Fell the Profane
14% of 21 decks +3% synergy
Deflecting Swat
12% of 48 decks -4% synergy
Stroke of Midnight
12% of 49 decks -0% synergy
Afterlife Insurance
10% of 30 decks +9% synergy
Valakut Awakening
8% of 48 decks +2% synergy
Bedevil
8% of 48 decks -6% synergy
Boros Charm
8% of 48 decks -17% synergy
Culling the Weak
8% of 103 decks +4% synergy
Deadly Rollick
8% of 103 decks -3% synergy
Inkshield
7% of 103 decks +1% synergy
Utter End
7% of 103 decks -0% synergy
Mortify
7% of 103 decks -5% synergy
Crackling Doom
6% of 48 decks -2% synergy
Rakdos Charm
6% of 48 decks -8% synergy
Hagra Mauling
6% of 103 decks +4% synergy
Ephemerate
6% of 103 decks -0% synergy
Fracture
6% of 103 decks -1% synergy
Nasty End
5% of 55 decks +3% synergy
Sorceries
Blasphemous Act
46% of 48 decks +12% synergy
Cultivate
39% of 18 decks -7% synergy
Diabolic Intent
38% of 103 decks +29% synergy
Faithless Looting
35% of 48 decks +19% synergy
Toxic Deluge
35% of 103 decks +17% synergy
Seize the Spotlight
34% of 47 decks +32% synergy
Demonic Tutor
33% of 103 decks +11% synergy
Agadeem's Awakening
28% of 103 decks +25% synergy
Damn
28% of 103 decks +12% synergy
Farseek
28% of 18 decks -6% synergy
Buried Alive
23% of 103 decks +18% synergy
Life from the Loam
17% of 18 decks +13% synergy
Kodama's Reach
17% of 18 decks -15% synergy
Rampant Growth
17% of 18 decks -18% synergy
Living Death
17% of 103 decks +11% synergy
Cathartic Reunion
15% of 48 decks +11% synergy
Sign in Blood
15% of 103 decks +5% synergy
Jeska's Will
12% of 48 decks -5% synergy
Night's Whisper
12% of 103 decks +3% synergy
Austere Command
12% of 103 decks -1% synergy
Unearth
11% of 103 decks +7% synergy
Dread Return
11% of 103 decks +5% synergy
Sevinne's Reclamation
11% of 103 decks +3% synergy
Tormenting Voice
10% of 48 decks +8% synergy
Gamble
10% of 48 decks +0% synergy
Rite of Oblivion
10% of 103 decks +7% synergy
Damnation
9% of 103 decks +1% synergy
Farewell
8% of 102 decks -6% synergy
Unburial Rites
8% of 103 decks +5% synergy
Dusk // Dawn
8% of 103 decks +4% synergy
Unmarked Grave
7% of 103 decks +4% synergy
Read the Bones
7% of 103 decks -1% synergy
Vandalblast
6% of 48 decks -10% synergy
Ruinous Ultimatum
6% of 48 decks -12% synergy
Beseech the Mirror
6% of 49 decks +2% synergy
Utility Artifacts
Altar of Dementia
30% of 103 decks +27% synergy
Birthing Pod
22% of 18 decks +20% synergy
Lightning Greaves
13% of 103 decks -13% synergy
Blasting Station
10% of 103 decks +9% synergy
Bolas's Citadel
10% of 103 decks +1% synergy
Nim Deathmantle
9% of 103 decks +8% synergy
Swiftfoot Boots
7% of 103 decks -21% synergy
Enchantments
Bastion of Remembrance
47% of 103 decks +40% synergy
Rhystic Study
42% of 12 decks +14% synergy
The Meathook Massacre
35% of 103 decks +30% synergy
Animate Dead
28% of 103 decks +19% synergy
Smothering Tithe
25% of 103 decks +0% synergy
Mystic Remora
25% of 12 decks +7% synergy
Anointed Procession
24% of 103 decks +15% synergy
Aura Shards
17% of 18 decks +8% synergy
Ripples of Undeath
16% of 19 decks +9% synergy
Dictate of Erebos
16% of 103 decks +12% synergy
Black Market Connections
15% of 101 decks +4% synergy
Grave Pact
15% of 103 decks +10% synergy
Trouble in Pairs
13% of 30 decks +6% synergy
Necromancy
11% of 103 decks +8% synergy
Phyrexian Reclamation
11% of 103 decks +7% synergy
Bitterblossom
11% of 103 decks +7% synergy
Life Insurance
10% of 102 decks +8% synergy
Gift of Immortality
10% of 103 decks +8% synergy
Fanatical Devotion
9% of 103 decks +8% synergy
Impact Tremors
8% of 48 decks -1% synergy
Kaya's Ghostform
8% of 103 decks +4% synergy
Phyrexian Arena
8% of 103 decks -7% synergy
Tombstone Stairwell
7% of 103 decks +7% synergy
Dark Prophecy
7% of 103 decks +6% synergy
Reconnaissance
7% of 103 decks +5% synergy
Black Market
7% of 103 decks +2% synergy
Underworld Breach
6% of 48 decks +0% synergy
Skrelv's Hive
6% of 83 decks +3% synergy
Blight Mound
6% of 103 decks +5% synergy
Tortured Existence
6% of 103 decks +4% synergy
Dance of the Dead
6% of 103 decks +4% synergy
Planeswalkers
Grist, the Hunger Tide
17% of 18 decks +13% synergy
Liliana, Dreadhorde General
14% of 103 decks +10% synergy
Tevesh Szat, Doom of Fools
7% of 103 decks +5% synergy
Utility Lands
Bojuka Bog
50% of 103 decks +19% synergy
Takenuma, Abandoned Mire
40% of 102 decks +30% synergy
Urborg, Tomb of Yawgmoth
34% of 103 decks +24% synergy
Spymaster's Vault
33% of 21 decks +29% synergy
High Market
31% of 103 decks +28% synergy
Castle Locthwain
19% of 103 decks +14% synergy
Reliquary Tower
18% of 103 decks -11% synergy
Boseiju, Who Endures
17% of 18 decks -3% synergy
Eiganjo, Seat of the Empire
15% of 102 decks +6% synergy
Cabal Coffers
15% of 103 decks +4% synergy
Ancient Tomb
13% of 103 decks +2% synergy
Sokenzan, Crucible of Defiance
11% of 47 decks +6% synergy
Emergence Zone
8% of 103 decks +5% synergy
Shizo, Death's Storehouse
8% of 103 decks +3% synergy
Westvale Abbey
7% of 103 decks +5% synergy
Strip Mine
7% of 103 decks +4% synergy
Urza's Saga
7% of 103 decks -0% synergy
Hanweir Battlements
6% of 48 decks +5% synergy
Volrath's Stronghold
6% of 103 decks +4% synergy
Wasteland
6% of 103 decks +4% synergy
Emeria, the Sky Ruin
6% of 103 decks +3% synergy
Hall of Heliod's Generosity
6% of 103 decks -1% synergy
Mana Artifacts
Arcane Signet
84% of 103 decks +12% synergy
Sol Ring
84% of 103 decks +0% synergy
Talisman of Conviction
56% of 48 decks +33% synergy
Talisman of Hierarchy
55% of 103 decks +31% synergy
Talisman of Indulgence
50% of 48 decks +24% synergy
Orzhov Signet
37% of 103 decks +10% synergy
Talisman of Dominance
33% of 12 decks +2% synergy
Talisman of Progress
25% of 12 decks +2% synergy
Rakdos Signet
25% of 48 decks -5% synergy
Boros Signet
21% of 48 decks -3% synergy
Fellwar Stone
17% of 103 decks -5% synergy
Mind Stone
14% of 103 decks -4% synergy
Mana Crypt
7% of 103 decks -2% synergy
Thought Vessel
7% of 103 decks -10% synergy
Lands
Command Tower
91% of 103 decks +17% synergy
Blood Crypt
75% of 48 decks +36% synergy
Godless Shrine
75% of 103 decks +34% synergy
Savai Triome
71% of 48 decks +44% synergy
Sacred Foundry
71% of 48 decks +35% synergy
Spectator Seating
65% of 48 decks +39% synergy
Dragonskull Summit
65% of 48 decks +34% synergy
Luxury Suite
62% of 48 decks +36% synergy
Marsh Flats
61% of 103 decks +50% synergy
Vault of Champions
60% of 103 decks +34% synergy
Battlefield Forge
58% of 48 decks +33% synergy
Isolated Chapel
58% of 103 decks +31% synergy
Temple Garden
56% of 18 decks +15% synergy
Overgrown Tomb
56% of 18 decks +13% synergy
Clifftop Retreat
54% of 48 decks +26% synergy
Haunted Ridge
52% of 48 decks +36% synergy
Sea of Clouds
50% of 12 decks +24% synergy
Opulent Palace
50% of 6 decks +23% synergy
Indatha Triome
50% of 18 decks +19% synergy
Exotic Orchard
43% of 103 decks +7% synergy
Sundown Pass
42% of 48 decks +26% synergy
Shattered Sanctum
41% of 103 decks +27% synergy
Arid Mesa
40% of 103 decks +29% synergy
Caves of Koilos
40% of 103 decks +12% synergy
Undergrowth Stadium
39% of 18 decks +13% synergy
Bloodstained Mire
35% of 103 decks +24% synergy
Fetid Heath
35% of 103 decks +24% synergy
Raucous Theater
33% of 18 decks +20% synergy
Morphic Pool
33% of 12 decks +7% synergy
Hallowed Fountain
33% of 12 decks -7% synergy
Watery Grave
33% of 12 decks -7% synergy
Shadowy Backstreet
31% of 36 decks +17% synergy
Elegant Parlor
28% of 18 decks +19% synergy
Sunpetal Grove
28% of 18 decks +4% synergy
Bountiful Promenade
28% of 18 decks +4% synergy
Woodland Cemetery
28% of 18 decks -0% synergy
Underground Sea
25% of 12 decks +11% synergy
Arcane Sanctum
25% of 12 decks -3% synergy
Raffine's Tower
25% of 12 decks -3% synergy
Fabled Passage
24% of 103 decks +15% synergy
Brightclimb Pathway
23% of 103 decks +13% synergy
Sulfurous Springs
23% of 48 decks +3% synergy
Prismatic Vista
22% of 103 decks +17% synergy
Scrubland
22% of 103 decks +9% synergy
Bayou
22% of 18 decks +9% synergy
Sandsteppe Citadel
22% of 18 decks -3% synergy
Tainted Field
19% of 103 decks +6% synergy
Plateau
19% of 48 decks +6% synergy
Badlands
19% of 48 decks +5% synergy
Nomad Outpost
19% of 48 decks -9% synergy