Yahenni, Undying Partisan + Agatha's Soul Cauldron + Triskelion

Yahenni, Undying Partisan
Agatha's Soul Cauldron
Triskelion

Requires
Yahenni, Undying Partisan must be on the battlefield. Agatha's Soul Cauldron must be on the battlefield. Triskelion must be in exile (exiled by Agatha's Soul Cauldron). Yahenni has at least one +1/+1 counter on it. You have a way to give Yahenni deathtouch.
Steps
  1. Give Yahenni deathtouch, if needed.
  2. Activate Yahenni using Triskelion's ability by removing a +1/+1 counter from it, dealing 1 damage to a creature an opponent controls, and destroying it due to Yahenni's deathtouch.
  3. Yahenni triggers, putting a +1/+1 counter on it.
  4. Repeat from step 2.
  5. If you can give Yahenni deathtouch indefinitely, you may repeat this loop whenever a creature enters the battlefield under an opponent's control.
Results
Destroy all creatures opponents control. Destroy any creature that enters the battlefield under an opponent's control.

Marchesa, the Black Rose
0.14% of 9321 decks 13 decks
Reyhan, Last of the Abzan // Yoshimaru, Ever Faithful
0.17% of 1730 decks 3 decks
Reyhan, Last of the Abzan // Sakashima of a Thousand Faces
0.74% of 270 decks 2 decks
Ashnod, Flesh Mechanist
0.06% of 1643 decks 1 decks
Tasigur, the Golden Fang
0.02% of 5816 decks 1 decks
Felisa, Fang of Silverquill
0.06% of 1661 decks 1 decks
Indominus Rex, Alpha
0.02% of 4628 decks 1 decks
Massacre Girl, Known Killer
0.03% of 3946 decks 1 decks
Volrath, the Shapestealer
0.04% of 2776 decks 1 decks
Keleth, Sunmane Familiar // Reyhan, Last of the Abzan
0.51% of 195 decks 1 decks
High Synergy Cards
Uncivil Unrest
85% of 13 decks +83% synergy
Esper Sentinel
100% of 5 decks +79% synergy
Ashnod's Altar
80% of 25 decks +72% synergy
Carrion Feeder
76% of 25 decks +71% synergy
Herald of Secret Streams
72% of 18 decks +69% synergy
The Ozolith
72% of 25 decks +69% synergy
Arwen, Weaver of Hope
67% of 9 decks +64% synergy
Goblin Bombardment
69% of 13 decks +63% synergy
Flayer of the Hatebound
62% of 13 decks +61% synergy
Ozolith, the Shattered Spire
67% of 9 decks +60% synergy
Top Cards
Swords to Plowshares
80% of 5 decks +17% synergy
Blasphemous Act
69% of 13 decks +36% synergy
Hardened Scales
67% of 9 decks +58% synergy
Baleful Strix
67% of 18 decks +53% synergy
Counterspell
67% of 18 decks +24% synergy
Viscera Seer
60% of 25 decks +51% synergy
Mikaeus, the Unhallowed
56% of 25 decks +53% synergy
River Kelpie
56% of 18 decks +55% synergy
Glen Elendra Archmage
56% of 18 decks +53% synergy
Rishkar, Peema Renegade
56% of 9 decks +51% synergy
Creatures
Mikaeus, the Lunarch
60% of 5 decks +58% synergy
Breena, the Demagogue
60% of 5 decks +57% synergy
Master Biomancer
60% of 5 decks +56% synergy
Bartolomé del Presidio
60% of 5 decks +53% synergy
Walking Ballista
52% of 25 decks +49% synergy
Yawgmoth, Thran Physician
52% of 25 decks +48% synergy
Spark Double
50% of 18 decks +43% synergy
Immersturm Predator
46% of 13 decks +45% synergy
Pir, Imaginative Rascal
44% of 9 decks +43% synergy
Benevolent Hydra
44% of 9 decks +43% synergy
Winding Constrictor
44% of 9 decks +40% synergy
Corpsejack Menace
44% of 9 decks +39% synergy
Kami of Whispered Hopes
44% of 9 decks +37% synergy
Llanowar Elves
44% of 9 decks +24% synergy
Birds of Paradise
44% of 9 decks +18% synergy
Solemn Simulacrum
44% of 25 decks +30% synergy
Grim Haruspex
40% of 25 decks +36% synergy
Voldaren Thrillseeker
38% of 13 decks +38% synergy
Danny Pink
38% of 13 decks +37% synergy
Imperial Recruiter
38% of 13 decks +32% synergy
Iron Apprentice
36% of 25 decks +36% synergy
Scorn-Blade Berserker
36% of 25 decks +36% synergy
Sage of Fables
33% of 18 decks +33% synergy
Devoted Druid
33% of 9 decks +30% synergy
Incubation Druid
33% of 9 decks +28% synergy
Elves of Deep Shadow
33% of 9 decks +22% synergy
Fyndhorn Elves
33% of 9 decks +20% synergy
Eternal Witness
33% of 9 decks +12% synergy
Bloodtracker
32% of 25 decks +31% synergy
Puppeteer Clique
32% of 25 decks +30% synergy
Drana, Liberator of Malakir
32% of 25 decks +29% synergy
Thundering Raiju
31% of 13 decks +30% synergy
Zealous Conscripts
31% of 13 decks +29% synergy
Kiki-Jiki, Mirror Breaker
31% of 13 decks +27% synergy
Juri, Master of the Revue
31% of 13 decks +27% synergy
Mahadi, Emporium Master
31% of 13 decks +24% synergy
Gisa, Glorious Resurrector
28% of 25 decks +26% synergy
Chasm Skulker
28% of 18 decks +24% synergy
Phyrexian Metamorph
28% of 18 decks +21% synergy
Crystalline Crawler
24% of 25 decks +24% synergy
Arcbound Ravager
24% of 25 decks +24% synergy
Fain, the Broker
24% of 25 decks +23% synergy
Arcbound Whelp
23% of 13 decks +23% synergy
Arcbound Tracker
23% of 13 decks +23% synergy
Murderous Redcap
23% of 13 decks +22% synergy
Lord Xander, the Collector
23% of 13 decks +21% synergy
Ragavan, Nimble Pilferer
23% of 13 decks +15% synergy
Dockside Extortionist
23% of 13 decks +10% synergy
Arcbound Reclaimer
20% of 25 decks +20% synergy
Scrapyard Recombiner
20% of 25 decks +20% synergy
Instants
Enlightened Tutor
60% of 5 decks +42% synergy
Chaos Warp
54% of 13 decks +22% synergy
Assassin's Trophy
44% of 9 decks +14% synergy
Arcane Denial
33% of 18 decks +14% synergy
Cyclonic Rift
28% of 18 decks -0% synergy
Malakir Rebirth
24% of 25 decks +16% synergy
Terminate
23% of 13 decks +2% synergy
Mana Drain
22% of 18 decks +7% synergy
Fierce Guardianship
22% of 18 decks +4% synergy
Negate
22% of 18 decks -1% synergy
Lethal Scheme
20% of 25 decks +19% synergy
Swan Song
17% of 18 decks +0% synergy
Village Rites
16% of 25 decks +6% synergy
Deadly Dispute
16% of 25 decks +5% synergy
Vampiric Tutor
16% of 25 decks -2% synergy
Deadly Rollick
12% of 25 decks +1% synergy
Dark Ritual
12% of 25 decks -10% synergy
Sorceries
Neoform
60% of 5 decks +55% synergy
Damn
60% of 5 decks +43% synergy
Mark of Mutiny
46% of 13 decks +46% synergy
Vandalblast
46% of 13 decks +30% synergy
Eldritch Evolution
44% of 9 decks +40% synergy
Feed the Swarm
36% of 25 decks +18% synergy
Bala Ged Recovery
33% of 9 decks +24% synergy
Toxic Deluge
32% of 25 decks +15% synergy
Demonic Tutor
28% of 25 decks +6% synergy
Mob Rule
23% of 13 decks +22% synergy
Reanimate
20% of 25 decks +4% synergy
Damnation
12% of 25 decks +4% synergy
Diabolic Intent
12% of 25 decks +3% synergy
Utility Artifacts
Phyrexian Altar
48% of 25 decks +44% synergy
Birthing Pod
33% of 9 decks +31% synergy
The Great Henge
33% of 9 decks +23% synergy
Altar of Dementia
24% of 25 decks +21% synergy
Lightning Greaves
24% of 25 decks -1% synergy
Andúril, Narsil Reforged
20% of 20 decks +19% synergy
Skullclamp
20% of 25 decks +8% synergy
Bolas's Citadel
16% of 25 decks +7% synergy
Swiftfoot Boots
16% of 25 decks -12% synergy
Eriette's Tempting Apple
14% of 21 decks +14% synergy
Enchantments
Cathars' Crusade
60% of 5 decks +54% synergy
Branching Evolution
56% of 9 decks +50% synergy
Sneak Attack
46% of 13 decks +44% synergy
Greater Good
44% of 9 decks +39% synergy
Tribute to the World Tree
44% of 9 decks +36% synergy
Unspeakable Symbol
44% of 25 decks +43% synergy
Thran Vigil
40% of 25 decks +39% synergy
All Will Be One
23% of 13 decks +20% synergy
Rhystic Study
22% of 18 decks -6% synergy
Feast on the Fallen
20% of 25 decks +20% synergy
Retribution of the Ancients
16% of 25 decks +15% synergy
Grave Betrayal
16% of 25 decks +15% synergy
Necropotence
12% of 25 decks +7% synergy
Animate Dead
12% of 25 decks +3% synergy
Planeswalkers
Grist, the Hunger Tide
33% of 9 decks +30% synergy
Utility Lands
Eiganjo, Seat of the Empire
60% of 5 decks +51% synergy
Boseiju, Who Endures
56% of 9 decks +36% synergy
Phyrexian Tower
52% of 25 decks +44% synergy
Urborg, Tomb of Yawgmoth
40% of 25 decks +30% synergy
High Market
36% of 25 decks +33% synergy
Otawara, Soaring City
33% of 18 decks +16% synergy
Forge of Heroes
28% of 25 decks +27% synergy
Bojuka Bog
28% of 25 decks -2% synergy
Karn's Bastion
24% of 25 decks +19% synergy
Urza's Saga
24% of 25 decks +17% synergy
Takenuma, Abandoned Mire
24% of 25 decks +13% synergy
The Black Gate
20% of 25 decks +16% synergy
Yavimaya, Cradle of Growth
20% of 25 decks +11% synergy
Nesting Grounds
16% of 25 decks +15% synergy
Ancient Tomb
16% of 25 decks +5% synergy
Cabal Coffers
16% of 25 decks +5% synergy
Miren, the Moaning Well
12% of 25 decks +12% synergy
Volrath's Stronghold
12% of 25 decks +11% synergy
Castle Locthwain
12% of 25 decks +7% synergy
Rogue's Passage
12% of 25 decks -7% synergy
Reliquary Tower
12% of 25 decks -17% synergy
Mana Artifacts
Sol Ring
92% of 25 decks +8% synergy
Arcane Signet
84% of 25 decks +12% synergy
Talisman of Dominance
56% of 18 decks +24% synergy
Talisman of Indulgence
46% of 13 decks +20% synergy
Talisman of Creativity
38% of 13 decks +10% synergy
Fellwar Stone
32% of 25 decks +11% synergy
Rakdos Signet
23% of 13 decks -7% synergy
Dimir Signet
22% of 18 decks -8% synergy
Liquimetal Torque
12% of 25 decks +8% synergy
Thought Vessel
12% of 25 decks -5% synergy
Lands
Xander's Lounge
85% of 13 decks +57% synergy
Command Tower
84% of 25 decks +10% synergy
Zagoth Triome
80% of 5 decks +49% synergy
Godless Shrine
80% of 5 decks +39% synergy
Breeding Pool
80% of 5 decks +39% synergy
Overgrown Tomb
78% of 9 decks +35% synergy
Dragonskull Summit
77% of 13 decks +46% synergy
Bountiful Promenade
75% of 4 decks +51% synergy
Indatha Triome
75% of 4 decks +44% synergy
Temple Garden
75% of 4 decks +34% synergy
Watery Grave
72% of 18 decks +31% synergy
Sulfurous Springs
69% of 13 decks +49% synergy
Training Center
69% of 13 decks +42% synergy
Blood Crypt
69% of 13 decks +30% synergy
Sulfur Falls
62% of 13 decks +31% synergy
Steam Vents
62% of 13 decks +22% synergy
Vault of Champions
60% of 5 decks +34% synergy
Rejuvenating Springs
60% of 5 decks +31% synergy
Exotic Orchard
56% of 25 decks +20% synergy
Drowned Catacomb
56% of 18 decks +30% synergy
Luxury Suite
54% of 13 decks +27% synergy
Shivan Reef
54% of 13 decks +27% synergy
Crumbling Necropolis
54% of 13 decks +23% synergy
Morphic Pool
50% of 18 decks +24% synergy
Llanowar Wastes
44% of 9 decks +19% synergy
Undergrowth Stadium
44% of 9 decks +18% synergy
Polluted Delta
40% of 25 decks +29% synergy
Verdant Catacombs
40% of 25 decks +29% synergy
Underground River
39% of 18 decks +19% synergy
Woodland Cemetery
33% of 9 decks +6% synergy
Opal Palace
32% of 25 decks +29% synergy
Mana Confluence
32% of 25 decks +25% synergy
Marsh Flats
32% of 25 decks +21% synergy
Stormcarved Coast
31% of 13 decks +13% synergy
Smoldering Marsh
31% of 13 decks -2% synergy
Bloodstained Mire
28% of 25 decks +18% synergy
Shipwreck Marsh
28% of 18 decks +9% synergy
Sunken Hollow
28% of 18 decks -7% synergy
City of Brass
24% of 25 decks +16% synergy
Scalding Tarn
24% of 25 decks +13% synergy
Badlands
23% of 13 decks +10% synergy
Volcanic Island
23% of 13 decks +9% synergy
Haunted Ridge
23% of 13 decks +7% synergy
Reflecting Pool
20% of 25 decks +15% synergy
Fabled Passage
20% of 25 decks +11% synergy
Windswept Heath
20% of 25 decks +10% synergy
Underground Sea
17% of 18 decks +2% synergy
Guildmages' Forum
16% of 25 decks +16% synergy
Plaza of Heroes
16% of 25 decks +13% synergy
Arid Mesa
16% of 25 decks +5% synergy