Cordial Vampire + Antler Skulkin + Ashnod's Altar

Cordial Vampire
Antler Skulkin
Ashnod's Altar

Requires
Cordial Vampire must be on the battlefield. Antler Skulkin must be on the battlefield. Ashnod's Altar must be on the battlefield. Mana needed: 2
Steps
  1. Activate Antler Skulkin by paying 2, giving the nontoken white Vampire persist until end of turn.
  2. Activate Ashnod's Altar by sacrificing the Vampire, adding .
  3. The Vampire dies, triggering its persist ability and Cordial Vampire.
  4. Resolve the Vampire's persist trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  5. Resolve the Cordial Vampire trigger, putting a +1/+1 counter on each Vampire you control.
  6. Repeat.
Results
Infinite +1/+1 counters on each Vampire you control. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Elenda, the Dusk Rose
0.10% of 5729 decks 6 decks
Carmen, Cruel Skymarcher
0.05% of 3953 decks 2 decks
Morophon, the Boundless
0.01% of 10492 decks 1 decks
Reaper King
0.02% of 5799 decks 1 decks
Edgar Markov
0.00% of 29537 decks 1 decks
High Synergy Cards
Cruel Celebrant
91% of 11 decks +83% synergy
Phyrexian Altar
82% of 11 decks +78% synergy
Vito, Thorn of the Dusk Rose
82% of 11 decks +76% synergy
Viscera Seer
82% of 11 decks +73% synergy
Felisa, Fang of Silverquill
73% of 11 decks +71% synergy
Blood Artist
82% of 11 decks +70% synergy
Legion Lieutenant
73% of 11 decks +70% synergy
Nim Deathmantle
64% of 11 decks +63% synergy
Charismatic Conqueror
67% of 9 decks +63% synergy
Welcoming Vampire
64% of 11 decks +58% synergy
Top Cards
Master of Dark Rites
56% of 9 decks +54% synergy
Elenda's Hierophant
56% of 9 decks +53% synergy
Animation Module
55% of 11 decks +54% synergy
Blade of the Bloodchief
55% of 11 decks +54% synergy
Exquisite Blood
55% of 11 decks +49% synergy
Skullclamp
55% of 11 decks +43% synergy
Swords to Plowshares
55% of 11 decks -8% synergy
Champion of Dusk
45% of 11 decks +44% synergy
Yahenni, Undying Partisan
45% of 11 decks +42% synergy
Butcher of Malakir
45% of 11 decks +42% synergy
Game Changers
Vampiric Tutor
45% of 11 decks +28% synergy
Smothering Tithe
36% of 11 decks +12% synergy
Demonic Tutor
27% of 11 decks +6% synergy
Creatures
Teysa Karlov
45% of 11 decks +41% synergy
Zulaport Cutthroat
45% of 11 decks +36% synergy
Bartolomé del Presidio
44% of 9 decks +39% synergy
Captivating Vampire
36% of 11 decks +35% synergy
Indulgent Aristocrat
36% of 11 decks +35% synergy
Edgar, Charmed Groom
36% of 11 decks +34% synergy
Pitiless Plunderer
36% of 11 decks +29% synergy
Elas il-Kor, Sadistic Pilgrim
36% of 11 decks +26% synergy
Carmen, Cruel Skymarcher
33% of 9 decks +30% synergy
Bloodletter of Aclazotz
33% of 9 decks +29% synergy
Roaming Throne
33% of 9 decks +26% synergy
Markov Baron
30% of 10 decks +29% synergy
Oathsworn Vampire
27% of 11 decks +27% synergy
Forerunner of the Legion
27% of 11 decks +27% synergy
Dusk Legion Zealot
27% of 11 decks +26% synergy
Vindictive Vampire
27% of 11 decks +26% synergy
Mavren Fein, Dusk Apostle
27% of 11 decks +26% synergy
Patron of the Vein
27% of 11 decks +26% synergy
Sanctum Seeker
27% of 11 decks +26% synergy
Pawn of Ulamog
27% of 11 decks +25% synergy
Falkenrath Noble
27% of 11 decks +25% synergy
Drivnod, Carnage Dominus
27% of 11 decks +25% synergy
Twilight Prophet
27% of 11 decks +24% synergy
Elenda, the Dusk Rose
27% of 11 decks +21% synergy
Instants
Malakir Rebirth
36% of 11 decks +28% synergy
Deadly Dispute
36% of 11 decks +25% synergy
Teferi's Protection
36% of 11 decks +17% synergy
Stroke of Midnight
30% of 10 decks +20% synergy
Feign Death
27% of 11 decks +25% synergy
Undying Malice
27% of 11 decks +25% synergy
Village Rites
27% of 11 decks +18% synergy
Deadly Rollick
27% of 11 decks +16% synergy
Despark
27% of 11 decks +12% synergy
Anguished Unmaking
27% of 11 decks +3% synergy
Path to Exile
27% of 11 decks -19% synergy
Sorceries
Diabolic Intent
45% of 11 decks +37% synergy
Blood Tribute
27% of 11 decks +27% synergy
Wrath of God
27% of 11 decks +21% synergy
Sign in Blood
27% of 11 decks +18% synergy
Damn
27% of 11 decks +11% synergy
Utility Artifacts
The Ozolith
36% of 11 decks +33% synergy
Lightning Greaves
27% of 11 decks +2% synergy
Enchantments
Black Market Connections
45% of 11 decks +34% synergy
Sanguine Bond
36% of 11 decks +31% synergy
Legion's Landing
27% of 11 decks +26% synergy
Gift of Immortality
27% of 11 decks +25% synergy
Utility Lands
Bojuka Bog
55% of 11 decks +25% synergy
Takenuma, Abandoned Mire
45% of 11 decks +36% synergy
Vault of the Archangel
45% of 11 decks +34% synergy
Urza's Saga
36% of 11 decks +29% synergy
Eiganjo, Seat of the Empire
36% of 11 decks +28% synergy
Phyrexian Tower
36% of 11 decks +28% synergy
Cabal Coffers
36% of 11 decks +26% synergy
Castle Locthwain
27% of 11 decks +22% synergy
Mana Artifacts
Sol Ring
91% of 11 decks +7% synergy
Arcane Signet
45% of 11 decks -27% synergy
Charcoal Diamond
27% of 11 decks +22% synergy
Mana Crypt
27% of 11 decks +21% synergy
Fellwar Stone
27% of 11 decks +6% synergy
Talisman of Hierarchy
27% of 11 decks +2% synergy
Lands
Sacred Foundry
100% of 3 decks +64% synergy
Blood Crypt
100% of 3 decks +62% synergy
Godless Shrine
91% of 11 decks +51% synergy
Command Tower
91% of 11 decks +17% synergy
Marsh Flats
64% of 11 decks +53% synergy
Shattered Sanctum
64% of 11 decks +50% synergy
Vault of Champions
64% of 11 decks +38% synergy
Isolated Chapel
55% of 11 decks +25% synergy
Scrubland
45% of 11 decks +32% synergy
Tainted Field
45% of 11 decks +32% synergy
Shadowy Backstreet
38% of 8 decks +27% synergy
Voldaren Estate
36% of 11 decks +36% synergy
Temple of Silence
36% of 11 decks +18% synergy
Myriad Landscape
36% of 11 decks +18% synergy
Silent Clearing
27% of 11 decks +23% synergy
Concealed Courtyard
27% of 11 decks +21% synergy
Fetid Heath
27% of 11 decks +16% synergy
Shineshadow Snarl
27% of 11 decks +15% synergy
Orzhov Basilica
27% of 11 decks +11% synergy
Evolving Wilds
27% of 11 decks +6% synergy
Caves of Koilos
27% of 11 decks -2% synergy
Exotic Orchard
27% of 11 decks -9% synergy