Cavalier of Night + Activated Sleeper + Yahenni, Undying Partisan

Cavalier of Night
Activated Sleeper
Yahenni, Undying Partisan

Requires
Cavalier of Night must be on the battlefield. Activated Sleeper must be in the graveyard. Yahenni, Undying Partisan must be on the battlefield.
Steps
  1. Activate Yahenni, Undying Partisan by sacrificing Cavalier of Night.
  2. When Cavalier of Night dies, it triggers, returning Activated Sleeper from your graveyard to the battlefield as a copy of Cavalier of Night.
  3. When Activated Sleeper enters the battlefield, its first triggered ability from Cavalier of Night triggers; choose not to sacrifice a creature.
  4. Resolve the Yahenni, Undying Partisan ability from step 1.
  5. Activate Yahenni, Undying Partisan by sacrificing Activated Sleeper.
  6. When Activated Sleeper dies, its last ability from Cavalier of Night triggers, returning itself from your graveyard to the battlefield as a copy of Cavalier of Night.
  7. When Activated Sleeper enters the battlefield, it triggers; choose not to sacrifice a creature.
  8. Resolve the Yahenni, Undying Partisan ability from step 5.
  9. Repeat from step 5.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Meren of Clan Nel Toth
0.52% of 14905 decks 77 decks
Moira, Urborg Haunt
19.00% of 100 decks 19 decks
Teysa Karlov
0.03% of 15216 decks 4 decks
Ayara, First of Locthwain
0.06% of 4765 decks 3 decks
Drivnod, Carnage Dominus
0.18% of 1090 decks 2 decks
The Ever-Changing 'Dane
0.26% of 756 decks 2 decks
Sefris of the Hidden Ways
0.02% of 8722 decks 2 decks
Ludevic, Necro-Alchemist // Tormod, the Desecrator
3.28% of 61 decks 2 decks
Sauron, Lord of the Rings
0.03% of 3282 decks 1 decks
Chevill, Bane of Monsters
0.08% of 1302 decks 1 decks
Sidar Kondo of Jamuraa // Tormod, the Desecrator
0.58% of 171 decks 1 decks
Braids, Arisen Nightmare
0.01% of 7033 decks 1 decks
Kodama of the East Tree // Tormod, the Desecrator
0.72% of 139 decks 1 decks
Grist, the Hunger Tide
0.02% of 5655 decks 1 decks
Ghoulcaller Gisa
0.04% of 2755 decks 1 decks
Kethis, the Hidden Hand
0.05% of 1897 decks 1 decks
Othelm, Sigardian Outcast // Wernog, Rider's Chaplain
0.11% of 912 decks 1 decks
Karador, Ghost Chieftain
0.02% of 5443 decks 1 decks
New Cards
Insidious Fungus
89% of 19 decks +84% synergy
High Synergy Cards
Saffi Eriksdotter
100% of 4 decks +98% synergy
Likeness Looter
100% of 5 decks +96% synergy
Spore Frog
86% of 84 decks +83% synergy
Viscera Seer
90% of 126 decks +81% synergy
Haywire Mite
85% of 84 decks +80% synergy
Protean Hulk
80% of 84 decks +78% synergy
Accursed Marauder
87% of 55 decks +78% synergy
Malcolm, Alluring Scoundrel
80% of 5 decks +77% synergy
Grim Haruspex
79% of 126 decks +74% synergy
Sakura-Tribe Elder
92% of 84 decks +73% synergy
Top Cards
Eternal Witness
93% of 84 decks +72% synergy
Assassin's Trophy
85% of 84 decks +54% synergy
Zulaport Cutthroat
82% of 126 decks +72% synergy
Glasspool Mimic
78% of 9 decks +75% synergy
Plaguecrafter
75% of 126 decks +70% synergy
Beast Within
74% of 84 decks +35% synergy
Elves of Deep Shadow
73% of 84 decks +62% synergy
Elvish Mystic
73% of 84 decks +55% synergy
Llanowar Elves
73% of 84 decks +52% synergy
Cankerbloom
72% of 83 decks +65% synergy
Creatures
Shoreline Looter
100% of 3 decks +97% synergy
Renegade Rallier
75% of 4 decks +75% synergy
Birds of Paradise
71% of 84 decks +45% synergy
Fiend Artisan
70% of 84 decks +68% synergy
Carrion Feeder
70% of 126 decks +65% synergy
Warren Soultrader
68% of 60 decks +61% synergy
Reveillark
67% of 12 decks +65% synergy
Karmic Guide
67% of 12 decks +62% synergy
Bartolomé del Presidio
67% of 6 decks +60% synergy
Sun Titan
67% of 12 decks +56% synergy
Fyndhorn Elves
65% of 84 decks +52% synergy
Disciple of Freyalise
65% of 49 decks +58% synergy
Braids, Arisen Nightmare
65% of 126 decks +57% synergy
Farhaven Elf
62% of 84 decks +58% synergy
Morbid Opportunist
61% of 126 decks +56% synergy
Flayer of the Hatebound
60% of 5 decks +59% synergy
Mosswood Dreadknight
60% of 75 decks +57% synergy
Demon's Disciple
56% of 126 decks +55% synergy
Sylvan Safekeeper
56% of 84 decks +53% synergy
Body Double
56% of 9 decks +55% synergy
Spark Double
56% of 9 decks +48% synergy
Fleshbag Marauder
51% of 126 decks +47% synergy
Mikaeus, the Unhallowed
50% of 126 decks +47% synergy
Scorn-Blade Berserker
50% of 105 decks +49% synergy
Yawgmoth, Thran Physician
48% of 126 decks +45% synergy
Merciless Executioner
47% of 126 decks +45% synergy
Blood Artist
47% of 126 decks +35% synergy
Phyrexian Delver
46% of 126 decks +45% synergy
Gray Merchant of Asphodel
46% of 126 decks +37% synergy
Dauthi Voidwalker
45% of 126 decks +37% synergy
River Kelpie
44% of 9 decks +44% synergy
Mirror Image
44% of 9 decks +44% synergy
Phantasmal Image
44% of 9 decks +40% synergy
Boromir, Warden of the Tower
43% of 7 decks +37% synergy
Lotho, Corrupt Shirriff
43% of 7 decks +28% synergy
Woe Strider
42% of 126 decks +40% synergy
Ao, the Dawn Sky
42% of 12 decks +40% synergy
Fiend Hunter
42% of 12 decks +40% synergy
Cruel Celebrant
42% of 12 decks +33% synergy
Elas il-Kor, Sadistic Pilgrim
42% of 12 decks +30% synergy
Fauna Shaman
37% of 84 decks +34% synergy
Walking Ballista
36% of 126 decks +33% synergy
Sidisi, Undead Vizier
35% of 126 decks +33% synergy
Wharf Infiltrator
33% of 9 decks +33% synergy
Looter il-Kor
33% of 9 decks +33% synergy
Vohar, Vodalian Desecrator
33% of 9 decks +32% synergy
Wurmcoil Engine
33% of 126 decks +31% synergy
Massacre Wurm
32% of 126 decks +27% synergy
Junji, the Midnight Sky
31% of 126 decks +28% synergy
Midnight Reaper
31% of 126 decks +27% synergy
Instants
Tear Asunder
64% of 84 decks +58% synergy
Prismari Command
60% of 5 decks +55% synergy
Rakdos Charm
60% of 5 decks +46% synergy
Chaos Warp
60% of 5 decks +28% synergy
Chord of Calling
52% of 84 decks +47% synergy
Stroke of Midnight
50% of 6 decks +38% synergy
Anguished Unmaking
50% of 12 decks +26% synergy
Swords to Plowshares
50% of 12 decks -13% synergy
Fell the Profane
48% of 60 decks +36% synergy
Counterspell
44% of 9 decks +2% synergy
Malakir Rebirth
29% of 126 decks +20% synergy
Dark Ritual
23% of 126 decks +1% synergy
Entomb
22% of 126 decks +15% synergy
Deadly Dispute
21% of 126 decks +10% synergy
Village Rites
17% of 126 decks +7% synergy
Abrupt Decay
14% of 84 decks +4% synergy
Corrupted Conviction
14% of 106 decks +8% synergy
Revitalizing Repast
12% of 49 decks -0% synergy
Deadly Rollick
12% of 126 decks +1% synergy
Vampiric Tutor
12% of 126 decks -6% synergy
Saw in Half
10% of 122 decks +7% synergy
Noxious Revival
8% of 84 decks +3% synergy
Baleful Mastery
8% of 126 decks +5% synergy
Not Dead After All
8% of 92 decks +4% synergy
Feign Death
7% of 126 decks +5% synergy
Tragic Slip
7% of 126 decks +3% synergy
Soul Shatter
6% of 126 decks +3% synergy
Worldly Tutor
6% of 84 decks -8% synergy
Heroic Intervention
6% of 84 decks -24% synergy
Undying Malice
6% of 126 decks +4% synergy
Infernal Grasp
6% of 126 decks -2% synergy
Sorceries
Reanimate
68% of 126 decks +53% synergy
Farseek
61% of 84 decks +26% synergy
Nature's Lore
60% of 84 decks +27% synergy
Toxic Deluge
59% of 126 decks +41% synergy
Three Visits
57% of 84 decks +32% synergy
Rampant Growth
56% of 84 decks +21% synergy
Natural Order
46% of 84 decks +44% synergy
Damn
42% of 12 decks +25% synergy
Victimize
39% of 126 decks +27% synergy
Agadeem's Awakening
31% of 126 decks +27% synergy
Buried Alive
25% of 126 decks +20% synergy
Eldritch Evolution
19% of 84 decks +14% synergy
Living Death
18% of 126 decks +13% synergy
Feed the Swarm
18% of 126 decks +0% synergy
Culling Ritual
17% of 84 decks +6% synergy
Diabolic Intent
16% of 126 decks +7% synergy
Persist
15% of 126 decks +13% synergy
Demonic Tutor
15% of 126 decks -7% synergy
Unmarked Grave
13% of 126 decks +10% synergy
Rise of the Witch-king
12% of 77 decks +5% synergy
Damnation
11% of 126 decks +3% synergy
Sign in Blood
11% of 126 decks +1% synergy
Green Sun's Zenith
11% of 84 decks +4% synergy
Night's Whisper
10% of 126 decks +0% synergy
Dread Return
9% of 126 decks +3% synergy
Life // Death
8% of 84 decks +7% synergy
Bala Ged Recovery
8% of 84 decks -1% synergy
Insatiable Avarice
8% of 63 decks +3% synergy
Read the Bones
8% of 126 decks +0% synergy
Blood for Bones
7% of 126 decks +7% synergy
Finale of Devastation
7% of 84 decks -1% synergy
Final Parting
6% of 126 decks +5% synergy
Flare of Cultivation
6% of 52 decks +3% synergy
Breach the Multiverse
6% of 109 decks +1% synergy
Utility Artifacts
Ashnod's Altar
67% of 126 decks +60% synergy
Birthing Pod
65% of 84 decks +63% synergy
Altar of Dementia
53% of 126 decks +50% synergy
Phyrexian Altar
48% of 126 decks +44% synergy
Mithril Coat
40% of 94 decks +34% synergy
Skullclamp
33% of 126 decks +20% synergy
Lightning Greaves
27% of 126 decks +2% synergy
Swiftfoot Boots
15% of 126 decks -13% synergy
Bontu's Monument
12% of 126 decks +10% synergy
Jet Medallion
12% of 126 decks +9% synergy
Wayfarer's Bauble
11% of 126 decks +1% synergy
Whispersilk Cloak
9% of 126 decks +5% synergy
Bolas's Citadel
8% of 126 decks -1% synergy
Vorrac Battlehorns
6% of 126 decks +5% synergy
The One Ring
6% of 109 decks -3% synergy
Enchantments
Birthing Ritual
64% of 47 decks +62% synergy
Journey to Eternity
61% of 84 decks +57% synergy
Goblin Bombardment
60% of 5 decks +54% synergy
Guardian Project
58% of 84 decks +50% synergy
Evolutionary Leap
54% of 84 decks +52% synergy
Grave Pact
45% of 126 decks +41% synergy
Animate Dead
38% of 126 decks +29% synergy
Gift of Doom
33% of 126 decks +33% synergy
Attrition
29% of 126 decks +29% synergy
Gift of Immortality
25% of 12 decks +23% synergy
Bastion of Remembrance
15% of 126 decks +9% synergy
Pattern of Rebirth
13% of 84 decks +12% synergy
Phyrexian Arena
13% of 126 decks -2% synergy
Necromancy
12% of 126 decks +9% synergy
Chthonian Nightmare
11% of 61 decks +8% synergy
Vampiric Rites
10% of 126 decks +8% synergy
Dictate of Erebos
10% of 126 decks +6% synergy
Phyrexian Reclamation
10% of 126 decks +6% synergy
Wild Growth
10% of 84 decks -1% synergy
Sylvan Library
10% of 84 decks -2% synergy
Moldervine Reclamation
8% of 84 decks -1% synergy
Insidious Roots
7% of 55 decks -1% synergy
Kaya's Ghostform
7% of 126 decks +3% synergy
Ripples of Undeath
7% of 57 decks +0% synergy
Cultist of the Absolute
6% of 126 decks +6% synergy
Awakening Zone
6% of 84 decks +3% synergy
Agent of the Iron Throne
6% of 126 decks +3% synergy
Black Market Connections
6% of 126 decks -5% synergy
Virtue of Persistence
5% of 92 decks +2% synergy
Planeswalkers
Grist, the Hunger Tide
8% of 84 decks +5% synergy
Liliana, Dreadhorde General
6% of 126 decks +2% synergy
Utility Lands
High Market
59% of 126 decks +56% synergy
Phyrexian Tower
48% of 126 decks +39% synergy
Urborg, Tomb of Yawgmoth
41% of 126 decks +31% synergy
Bojuka Bog
38% of 126 decks +8% synergy
Cephalid Coliseum
33% of 9 decks +31% synergy
Boseiju, Who Endures
26% of 84 decks +7% synergy
Yavimaya, Cradle of Growth
25% of 126 decks +16% synergy
Shambling Vent
25% of 12 decks +23% synergy
Takenuma, Abandoned Mire
21% of 126 decks +11% synergy
Cabal Coffers
21% of 126 decks +10% synergy
Witch's Cottage
13% of 126 decks +10% synergy
Castle Locthwain
13% of 126 decks +7% synergy
Shifting Woodland
12% of 49 decks +2% synergy
Spymaster's Vault
12% of 60 decks +8% synergy
Reliquary Tower
11% of 126 decks -18% synergy
Dryad Arbor
11% of 84 decks +7% synergy
Cabal Stronghold
10% of 126 decks +7% synergy
Access Tunnel
10% of 126 decks +7% synergy
Grim Backwoods
10% of 84 decks +6% synergy
War Room
10% of 126 decks +3% synergy
Rogue's Passage
10% of 126 decks -10% synergy
Shizo, Death's Storehouse
8% of 126 decks +3% synergy
Mortuary Mire
8% of 126 decks +3% synergy
Barren Moor
7% of 126 decks +3% synergy
Nykthos, Shrine to Nyx
7% of 126 decks +1% synergy
Ancient Tomb
6% of 126 decks -4% synergy
Field of the Dead
6% of 126 decks +2% synergy
Command Beacon
6% of 126 decks +1% synergy
Mana Artifacts
Sol Ring
87% of 126 decks +2% synergy
Arcane Signet
41% of 126 decks -31% synergy
Talisman of Hierarchy
33% of 12 decks +9% synergy
Orzhov Signet
25% of 12 decks -2% synergy
Mind Stone
13% of 126 decks -4% synergy
Crowded Crypt
9% of 126 decks +7% synergy
Charcoal Diamond
8% of 126 decks +3% synergy
Fellwar Stone
8% of 126 decks -13% synergy
Talisman of Resilience
7% of 84 decks -5% synergy
Golgari Signet
7% of 84 decks -6% synergy
Lands
Thundering Falls
100% of 3 decks +89% synergy
Raucous Theater
100% of 3 decks +87% synergy
Crumbling Necropolis
100% of 5 decks +69% synergy
Indatha Triome
100% of 4 decks +69% synergy
Woodland Cemetery
86% of 84 decks +58% synergy
Shadowblood Ridge
80% of 5 decks +68% synergy
Cascade Bluffs
80% of 5 decks +68% synergy
Temple of Malice
80% of 5 decks +66% synergy
Llanowar Wastes
77% of 84 decks +52% synergy
Undergrowth Stadium
76% of 84 decks +50% synergy
Murmuring Bosk
75% of 4 decks +67% synergy
Undercity Sewers
75% of 4 decks +61% synergy
Bountiful Promenade
75% of 4 decks +51% synergy
Temple Garden
75% of 4 decks +34% synergy
Command Tower
74% of 126 decks -0% synergy
Overgrown Tomb
73% of 84 decks +30% synergy
Tainted Wood
67% of 84 decks +54% synergy
Underground Mortuary
65% of 65 decks +48% synergy
Twilight Mire
63% of 84 decks +53% synergy
Necroblossom Snarl
61% of 84 decks +49% synergy
Deathcap Glade
61% of 84 decks +47% synergy
Sulfurous Mire
60% of 5 decks +58% synergy
Thriving Bluff
60% of 5 decks +58% synergy
Volatile Fjord
60% of 5 decks +58% synergy
Canyon Slough
60% of 5 decks +54% synergy
Temple of Epiphany
60% of 5 decks +42% synergy
Dragonskull Summit
60% of 5 decks +29% synergy
Isolated Chapel
58% of 12 decks +31% synergy
Godless Shrine
58% of 12 decks +18% synergy
Darkbore Pathway
56% of 84 decks +47% synergy
Darkwater Catacombs
56% of 9 decks +41% synergy
Drowned Catacomb
56% of 9 decks +30% synergy
Nurturing Peatland
51% of 84 decks +45% synergy
Blooming Marsh
50% of 84 decks +46% synergy
Caves of Koilos
50% of 12 decks +22% synergy
Temple of Deceit
44% of 9 decks +28% synergy
Brightclimb Pathway
42% of 12 decks +31% synergy
Fetid Heath
42% of 12 decks +31% synergy
Verdant Catacombs
35% of 126 decks +23% synergy
Thriving Isle
33% of 9 decks +31% synergy
Ice Tunnel
33% of 9 decks +31% synergy
Fetid Pools
33% of 9 decks +28% synergy
Shipwreck Marsh
33% of 9 decks +14% synergy
Underground River
33% of 9 decks +14% synergy
Vault of Champions
33% of 12 decks +8% synergy
Watery Grave
33% of 9 decks -8% synergy
Tainted Field
25% of 12 decks +12% synergy
Shattered Sanctum
25% of 12 decks +12% synergy
Temple of Silence
25% of 12 decks +7% synergy
Golgari Rot Farm
24% of 84 decks +6% synergy