Prowling Geistcatcher + Saffi Eriksdotter + Altar of Dementia

Prowling Geistcatcher
Saffi Eriksdotter
Altar of Dementia

Requires
Prowling Geistcatcher must be on the battlefield. Saffi Eriksdotter must be on the battlefield. Altar of Dementia must be on the battlefield.
Steps
  1. Activate Saffi by sacrificing it, targeting Prowling Geistcatcher.
  2. When Saffi dies, Prowling Geistcatcher's first ability triggers, exiling Saffi from your graveyard.
  3. Resolve the Saffi ability.
  4. Activate Altar of Dementia by sacrificing Prowling Geistcatcher.
  5. When Prowling Geistcatcher dies, its second ability and Saffi trigger.
  6. Resolve the Saffi trigger, returning Prowling Geistcatcher from your graveyard to the battlefield.
  7. Resolve the Prowling Geistcatcher trigger, returning Saffi from exile to the battlefield.
  8. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Prowling Geistcatcher's power.
  9. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite mill. Infinite sacrifice triggers. Infinite self-mill.

Karador, Ghost Chieftain
0.37% of 5443 decks 20 decks
Othelm, Sigardian Outcast // Wernog, Rider's Chaplain
0.33% of 912 decks 3 decks
Thalia and The Gitrog Monster
0.02% of 12491 decks 2 decks
Nethroi, Apex of Death
0.02% of 5695 decks 1 decks
Reyhan, Last of the Abzan // Yoshimaru, Ever Faithful
0.06% of 1730 decks 1 decks
Tazri, Stalwart Survivor
0.06% of 1780 decks 1 decks
High Synergy Cards
Karmic Guide
82% of 28 decks +78% synergy
Reveillark
79% of 28 decks +77% synergy
Viscera Seer
75% of 28 decks +66% synergy
Eternal Witness
82% of 28 decks +61% synergy
Carrion Feeder
64% of 28 decks +59% synergy
Zulaport Cutthroat
68% of 28 decks +58% synergy
Spore Frog
61% of 28 decks +58% synergy
Satyr Wayfinder
57% of 28 decks +55% synergy
Stitcher's Supplier
57% of 28 decks +54% synergy
Golgari Grave-Troll
54% of 28 decks +52% synergy
Top Cards
Sakura-Tribe Elder
68% of 28 decks +49% synergy
Swords to Plowshares
64% of 28 decks +2% synergy
Syr Konrad, the Grim
57% of 28 decks +48% synergy
Grisly Salvage
54% of 28 decks +48% synergy
Animate Dead
54% of 28 decks +44% synergy
Blood Artist
54% of 28 decks +42% synergy
Renegade Rallier
50% of 28 decks +50% synergy
Stinkweed Imp
50% of 28 decks +49% synergy
Aftermath Analyst
50% of 10 decks +46% synergy
Sun Titan
50% of 28 decks +39% synergy
Creatures
Accursed Marauder
100% of 3 decks +91% synergy
Grist, Voracious Larva
50% of 6 decks +47% synergy
Old Stickfingers
43% of 28 decks +40% synergy
Plaguecrafter
43% of 28 decks +38% synergy
Avacyn's Pilgrim
43% of 28 decks +28% synergy
Body Launderer
42% of 26 decks +42% synergy
Elas il-Kor, Sadistic Pilgrim
42% of 26 decks +31% synergy
Golgari Thug
39% of 28 decks +38% synergy
Gravebreaker Lamia
39% of 28 decks +38% synergy
Meren of Clan Nel Toth
39% of 28 decks +36% synergy
Gray Merchant of Asphodel
39% of 28 decks +30% synergy
Fauna Shaman
36% of 28 decks +33% synergy
Wood Elves
36% of 28 decks +29% synergy
Protean Hulk
32% of 28 decks +30% synergy
Shriekmaw
32% of 28 decks +30% synergy
World Shaper
32% of 28 decks +29% synergy
Grim Haruspex
32% of 28 decks +28% synergy
Skull Prophet
32% of 28 decks +28% synergy
Llanowar Elves
32% of 28 decks +11% synergy
Haywire Mite
32% of 22 decks +28% synergy
Foundation Breaker
29% of 28 decks +27% synergy
Fiend Hunter
29% of 28 decks +27% synergy
Ravenous Chupacabra
29% of 28 decks +24% synergy
Reclamation Sage
29% of 28 decks +18% synergy
Lurrus of the Dream-Den
25% of 28 decks +22% synergy
Pitiless Plunderer
25% of 28 decks +17% synergy
Cruel Celebrant
25% of 28 decks +17% synergy
Solemn Simulacrum
25% of 28 decks +11% synergy
Cankerbloom
24% of 21 decks +17% synergy
Kutzil, Malamet Exemplar
23% of 13 decks +4% synergy
Silverglade Pathfinder
21% of 28 decks +21% synergy
Hermit Druid
21% of 28 decks +20% synergy
Vile Entomber
21% of 28 decks +19% synergy
Priest of Fell Rites
21% of 28 decks +19% synergy
Felidar Guardian
21% of 28 decks +19% synergy
Timeless Witness
21% of 28 decks +18% synergy
Acidic Slime
21% of 28 decks +17% synergy
Nyx Weaver
21% of 28 decks +17% synergy
Sheoldred, Whispering One
21% of 28 decks +17% synergy
Ramunap Excavator
21% of 28 decks +15% synergy
Circle of the Land Druid
19% of 26 decks +19% synergy
Boromir, Warden of the Tower
19% of 21 decks +13% synergy
Sister Hospitaller
18% of 22 decks +17% synergy
Loran of the Third Path
18% of 22 decks +11% synergy
Bloodthrone Vampire
18% of 28 decks +17% synergy
Luminous Broodmoth
18% of 28 decks +16% synergy
Massacre Girl
18% of 28 decks +16% synergy
Woe Strider
18% of 28 decks +15% synergy
Yawgmoth, Thran Physician
18% of 28 decks +14% synergy
Midnight Reaper
18% of 28 decks +14% synergy
Instants
Entomb
32% of 28 decks +25% synergy
Path to Exile
32% of 28 decks -13% synergy
Beast Within
29% of 28 decks -10% synergy
Village Rites
21% of 28 decks +11% synergy
Generous Gift
21% of 28 decks -4% synergy
Malakir Rebirth
18% of 28 decks +10% synergy
Anguished Unmaking
18% of 28 decks -6% synergy
Veil of Summer
14% of 28 decks +8% synergy
Nature's Claim
14% of 28 decks +5% synergy
Deadly Dispute
14% of 28 decks +3% synergy
Assassin's Trophy
14% of 28 decks -16% synergy
Overwhelming Remorse
14% of 22 decks +13% synergy
Mythos of Nethroi
11% of 28 decks +8% synergy
Crop Rotation
11% of 28 decks +1% synergy
Abrupt Decay
11% of 28 decks +0% synergy
Worldly Tutor
11% of 28 decks -3% synergy
Putrefy
11% of 28 decks -5% synergy
Teferi's Protection
11% of 28 decks -9% synergy
Sorceries
Victimize
43% of 28 decks +31% synergy
Reanimate
43% of 28 decks +27% synergy
Living Death
39% of 28 decks +34% synergy
Life from the Loam
36% of 28 decks +32% synergy
Squirming Emergence
33% of 18 decks +30% synergy
Rise of the Witch-king
33% of 21 decks +27% synergy
Persist
32% of 28 decks +30% synergy
Damn
32% of 28 decks +16% synergy
Dread Return
29% of 28 decks +23% synergy
Buried Alive
29% of 28 decks +23% synergy
Eerie Ultimatum
29% of 28 decks +16% synergy
Farseek
25% of 28 decks -9% synergy
Cultivate
21% of 28 decks -25% synergy
Mulch
18% of 28 decks +17% synergy
Demonic Tutor
18% of 28 decks -5% synergy
Kodama's Reach
18% of 28 decks -14% synergy
Rampant Growth
18% of 28 decks -17% synergy
Unburial Rites
14% of 28 decks +12% synergy
Eldritch Evolution
14% of 28 decks +10% synergy
Three Visits
14% of 28 decks -10% synergy
Nature's Lore
14% of 28 decks -18% synergy
Unmarked Grave
11% of 28 decks +8% synergy
Wrath of God
11% of 28 decks +4% synergy
Culling Ritual
11% of 28 decks -0% synergy
Utility Artifacts
Ashnod's Altar
46% of 28 decks +39% synergy
Skullclamp
43% of 28 decks +30% synergy
Conduit of Worlds
29% of 21 decks +22% synergy
Blasting Station
25% of 28 decks +24% synergy
Perpetual Timepiece
21% of 28 decks +20% synergy
Birthing Pod
21% of 28 decks +19% synergy
Phyrexian Altar
18% of 28 decks +14% synergy
Palantír of Orthanc
14% of 21 decks +13% synergy
Lightning Greaves
14% of 28 decks -11% synergy
Mesmeric Orb
11% of 28 decks +9% synergy
Enchantments
Dictate of Erebos
18% of 28 decks +14% synergy
Pattern of Rebirth
14% of 28 decks +14% synergy
Necromancy
14% of 28 decks +11% synergy
Bastion of Remembrance
14% of 28 decks +8% synergy
Guardian Project
14% of 28 decks +6% synergy
Phyrexian Arena
14% of 28 decks -0% synergy
Out of the Tombs
14% of 22 decks +12% synergy
Survival of the Fittest
11% of 28 decks +9% synergy
Journey to Eternity
11% of 28 decks +7% synergy
Kaya's Ghostform
11% of 28 decks +7% synergy
Greater Good
11% of 28 decks +6% synergy
Planeswalkers
Grist, the Hunger Tide
21% of 28 decks +18% synergy
Vivien on the Hunt
12% of 26 decks +11% synergy
Utility Lands
Bojuka Bog
57% of 28 decks +27% synergy
High Market
46% of 28 decks +43% synergy
Phyrexian Tower
32% of 28 decks +24% synergy
Urborg, Tomb of Yawgmoth
29% of 28 decks +19% synergy
Dakmor Salvage
25% of 28 decks +23% synergy
Takenuma, Abandoned Mire
19% of 27 decks +8% synergy
Reliquary Tower
18% of 28 decks -12% synergy
Boseiju, Who Endures
15% of 27 decks -5% synergy
Yavimaya, Cradle of Growth
14% of 28 decks +5% synergy
Rogue's Passage
11% of 28 decks -9% synergy
Mana Artifacts
Sol Ring
79% of 28 decks -6% synergy
Arcane Signet
61% of 28 decks -11% synergy
Lands
Command Tower
96% of 28 decks +23% synergy
Sandsteppe Citadel
54% of 28 decks +28% synergy
Woodland Cemetery
54% of 28 decks +26% synergy
Exotic Orchard
54% of 28 decks +18% synergy
Llanowar Wastes
46% of 28 decks +21% synergy
Caves of Koilos
46% of 28 decks +18% synergy
Overgrown Tomb
46% of 28 decks +4% synergy
Isolated Chapel
43% of 28 decks +16% synergy
Indatha Triome
43% of 28 decks +12% synergy
Canopy Vista
43% of 28 decks +7% synergy
Temple Garden
43% of 28 decks +2% synergy
Godless Shrine
43% of 28 decks +2% synergy
Evolving Wilds
39% of 28 decks +18% synergy
Underground Mortuary
33% of 12 decks +17% synergy
Murmuring Bosk
32% of 28 decks +25% synergy
Sunpetal Grove
32% of 28 decks +9% synergy
Marsh Flats
29% of 28 decks +17% synergy
Path of Ancestry
29% of 28 decks +7% synergy
Windswept Heath
25% of 28 decks +15% synergy
Verdant Catacombs
25% of 28 decks +14% synergy
Lush Portico
25% of 12 decks +13% synergy
Temple of Plenty
25% of 28 decks +12% synergy
Shadowy Backstreet
25% of 12 decks +12% synergy
Terramorphic Expanse
25% of 28 decks +9% synergy
Brushland
25% of 28 decks +9% synergy
Temple of Malady
25% of 28 decks +9% synergy
Temple of Silence
25% of 28 decks +7% synergy
Bountiful Promenade
25% of 28 decks +1% synergy
Vault of Champions
25% of 28 decks -1% synergy
Woodland Chasm
18% of 28 decks +13% synergy
Brightclimb Pathway
18% of 28 decks +8% synergy
Shineshadow Snarl
18% of 28 decks +6% synergy
Deathcap Glade
18% of 28 decks +4% synergy
Orzhov Basilica
18% of 28 decks +2% synergy
Undergrowth Stadium
18% of 28 decks -8% synergy
Reflecting Pool
14% of 28 decks +9% synergy
Concealed Courtyard
14% of 28 decks +9% synergy
Blossoming Sands
14% of 28 decks +8% synergy
Jungle Hollow
14% of 28 decks +6% synergy
Twilight Mire
14% of 28 decks +5% synergy
Golgari Rot Farm
14% of 28 decks -4% synergy
Krosan Verge
11% of 28 decks +8% synergy
Snowfield Sinkhole
11% of 28 decks +8% synergy
Darkbore Pathway
11% of 28 decks +2% synergy
Scoured Barrens
11% of 28 decks +2% synergy
Fabled Passage
11% of 28 decks +2% synergy
Necroblossom Snarl
11% of 28 decks -1% synergy
Tainted Wood
11% of 28 decks -2% synergy
Selesnya Sanctuary
11% of 28 decks -3% synergy
Fortified Village
11% of 28 decks -4% synergy