Yahenni, Undying Partisan + Agatha's Soul Cauldron + Walking Ballista

Yahenni, Undying Partisan
Agatha's Soul Cauldron
Walking Ballista

Requires
Yahenni, Undying Partisan must be on the battlefield. Agatha's Soul Cauldron must be on the battlefield. Walking Ballista 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 Walking Ballista's second 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 as desired.
  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.

Reyhan, Last of the Abzan // Sakashima of a Thousand Faces
3.45% of 261 decks 9 decks
Reyhan, Last of the Abzan // Yoshimaru, Ever Faithful
0.55% of 1649 decks 9 decks
Marchesa, the Black Rose
0.11% of 9108 decks 10 decks
New Cards
Innkeeper's Talent
60% of 5 decks +54% synergy
High Synergy Cards
Hardened Scales
72% of 50 decks +68% synergy
The Ozolith
63% of 82 decks +60% synergy
Master Biomancer
58% of 24 decks +57% synergy
The Great Henge
62% of 50 decks +57% synergy
Conclave Mentor
57% of 23 decks +56% synergy
Brokers Ascendancy
56% of 9 decks +55% synergy
Kami of Whispered Hopes
56% of 50 decks +52% synergy
Heliod, Sun-Crowned
51% of 35 decks +50% synergy
Bristly Bill, Spine Sower
52% of 21 decks +50% synergy
Goblin Bombardment
53% of 19 decks +49% synergy
Top Cards
Swords to Plowshares
69% of 35 decks +40% synergy
Branching Evolution
50% of 50 decks +48% synergy
Evolution Witness
50% of 14 decks +47% synergy
Revitalizing Repast
50% of 12 decks +47% synergy
Blasphemous Act
47% of 19 decks +31% synergy
Herald of Secret Streams
47% of 34 decks +46% synergy
Rishkar, Peema Renegade
46% of 50 decks +44% synergy
Forgotten Ancient
46% of 50 decks +43% synergy
Ozolith, the Shattered Spire
46% of 50 decks +43% synergy
Kutzil, Malamet Exemplar
44% of 18 decks +40% synergy
Creatures
Dockside Extortionist
42% of 19 decks +34% synergy
Corpsejack Menace
42% of 50 decks +41% synergy
Kodama of the West Tree
42% of 50 decks +40% synergy
Fathom Mage
42% of 24 decks +41% synergy
Yawgmoth, Thran Physician
40% of 82 decks +38% synergy
Esper Sentinel
40% of 35 decks +30% synergy
Birds of Paradise
40% of 50 decks +28% synergy
Carrion Feeder
39% of 82 decks +36% synergy
Bartolomé del Presidio
39% of 31 decks +37% synergy
Elenda, the Dusk Rose
37% of 35 decks +36% synergy
Lae'zel, Vlaakith's Champion
37% of 35 decks +36% synergy
Thundering Raiju
37% of 19 decks +36% synergy
Gyre Sage
36% of 50 decks +34% synergy
Mikaeus, the Lunarch
34% of 35 decks +33% synergy
Arwen, Weaver of Hope
34% of 50 decks +32% synergy
Managorger Hydra
34% of 50 decks +32% synergy
Incubation Druid
34% of 50 decks +32% synergy
Falco Spara, Pactweaver
33% of 9 decks +33% synergy
Glen Elendra Archmage
32% of 34 decks +31% synergy
Spark Double
32% of 34 decks +29% synergy
Flayer of the Hatebound
32% of 19 decks +31% synergy
Felisa, Fang of Silverquill
31% of 35 decks +31% synergy
Danny Pink
31% of 26 decks +30% synergy
Winding Constrictor
30% of 50 decks +29% synergy
Delighted Halfling
30% of 50 decks +23% synergy
Toothy, Imaginary Friend
26% of 34 decks +26% synergy
Imperial Recruiter
26% of 19 decks +23% synergy
Ragavan, Nimble Pilferer
26% of 19 decks +23% synergy
Vorinclex, Monstrous Raider
26% of 50 decks +24% synergy
Champion of Lambholt
26% of 50 decks +23% synergy
Elas il-Kor, Sadistic Pilgrim
26% of 35 decks +23% synergy
Dack's Duplicate
25% of 12 decks +25% synergy
Hangarback Walker
24% of 82 decks +23% synergy
Chasm Skulker
24% of 34 decks +22% synergy
Viscera Seer
23% of 82 decks +18% synergy
Orcish Bowmasters
23% of 82 decks +17% synergy
Satoru, the Infiltrator
23% of 13 decks +22% synergy
Benevolent Hydra
22% of 50 decks +21% synergy
Biophagus
22% of 50 decks +21% synergy
Kalonian Hydra
22% of 50 decks +21% synergy
Devoted Druid
22% of 50 decks +21% synergy
Ghave, Guru of Spores
22% of 23 decks +22% synergy
Faeburrow Elder
22% of 23 decks +19% synergy
Basking Broodscale
21% of 14 decks +20% synergy
Drana, Liberator of Malakir
21% of 82 decks +19% synergy
Mikaeus, the Unhallowed
21% of 82 decks +19% synergy
Sage of Hours
21% of 34 decks +20% synergy
Breena, the Demagogue
20% of 35 decks +19% synergy
Abzan Falconer
20% of 35 decks +19% synergy
Lotho, Corrupt Shirriff
20% of 35 decks +17% synergy
Instants
Assassin's Trophy
44% of 50 decks +38% synergy
Chaos Warp
37% of 19 decks +21% synergy
Inspiring Call
36% of 50 decks +32% synergy
Counterspell
32% of 34 decks +11% synergy
Anguished Unmaking
31% of 35 decks +26% synergy
Vampiric Tutor
30% of 82 decks +21% synergy
Cyclonic Rift
29% of 34 decks +16% synergy
Path to Exile
29% of 35 decks +8% synergy
Heroic Intervention
28% of 50 decks +14% synergy
Ripples of Potential
26% of 23 decks +24% synergy
Beast Within
26% of 50 decks +8% synergy
Swan Song
24% of 34 decks +15% synergy
Fierce Guardianship
24% of 34 decks +15% synergy
An Offer You Can't Refuse
24% of 34 decks +14% synergy
Enlightened Tutor
23% of 35 decks +15% synergy
Abzan Charm
22% of 23 decks +21% synergy
Deflecting Swat
21% of 19 decks +13% synergy
Dark Ritual
21% of 82 decks +10% synergy
Arcane Denial
21% of 34 decks +11% synergy
Negate
21% of 34 decks +9% synergy
Despark
20% of 35 decks +16% synergy
Teferi's Protection
20% of 35 decks +11% synergy
Get Lost
19% of 31 decks +17% synergy
Malakir Rebirth
18% of 82 decks +14% synergy
Bioshift
17% of 24 decks +17% synergy
Fell the Profane
17% of 18 decks +10% synergy
Tibalt's Trickery
16% of 19 decks +13% synergy
Archdruid's Charm
15% of 27 decks +11% synergy
Slip Out the Back
15% of 34 decks +13% synergy
Deadly Rollick
15% of 82 decks +9% synergy
Inkshield
14% of 35 decks +13% synergy
Flawless Maneuver
14% of 35 decks +10% synergy
Worldly Tutor
14% of 50 decks +7% synergy
Entomb
13% of 82 decks +10% synergy
Growth Spiral
12% of 24 decks +8% synergy
Tear Asunder
12% of 50 decks +11% synergy
Atomize
12% of 25 decks +10% synergy
Abrupt Decay
12% of 50 decks +10% synergy
Veil of Summer
12% of 50 decks +9% synergy
Mana Drain
12% of 34 decks +4% synergy
Reprieve
11% of 35 decks +9% synergy
Stroke of Midnight
11% of 35 decks +5% synergy
Chord of Calling
10% of 50 decks +7% synergy
Nature's Claim
10% of 50 decks +5% synergy
Brainstorm
9% of 34 decks -2% synergy
Fracture
9% of 35 decks +7% synergy
Unbreakable Formation
9% of 35 decks +5% synergy
Generous Gift
9% of 35 decks -3% synergy
Saw in Half
9% of 82 decks +7% synergy
Solidarity of Heroes
8% of 50 decks +8% synergy
Sorceries
Neoform
38% of 24 decks +36% synergy
Demonic Tutor
34% of 82 decks +22% synergy
Three Visits
34% of 50 decks +22% synergy
Farseek
32% of 50 decks +16% synergy
Toxic Deluge
30% of 82 decks +22% synergy
Reanimate
29% of 82 decks +22% synergy
Nature's Lore
28% of 50 decks +13% synergy
Damn
23% of 35 decks +19% synergy
Bala Ged Recovery
22% of 50 decks +18% synergy
Wave Goodbye
22% of 23 decks +20% synergy
Vandalblast
21% of 19 decks +13% synergy
Faithless Looting
21% of 19 decks +13% synergy
Damning Verdict
20% of 35 decks +19% synergy
Diabolic Intent
18% of 82 decks +14% synergy
Sevinne's Reclamation
17% of 35 decks +14% synergy
Cultivate
16% of 50 decks -6% synergy
Jeska's Will
16% of 19 decks +7% synergy
Eldritch Evolution
14% of 50 decks +12% synergy
Culling Ritual
14% of 50 decks +12% synergy
Victimize
13% of 82 decks +7% synergy
Flare of Cultivation
12% of 25 decks +11% synergy
Green Sun's Zenith
12% of 50 decks +9% synergy
Life's Legacy
10% of 50 decks +9% synergy
Finale of Devastation
10% of 50 decks +6% synergy
Agadeem's Awakening
10% of 82 decks +8% synergy
Feed the Swarm
10% of 82 decks +0% synergy
Rite of Replication
9% of 34 decks +7% synergy
Fabricate
9% of 34 decks +6% synergy
Primevals' Glorious Rebirth
9% of 35 decks +7% synergy
Merciless Eviction
9% of 35 decks +7% synergy
Urza's Ruinous Blast
9% of 35 decks +7% synergy
Damnation
9% of 82 decks +4% synergy
Turntimber Symbiosis
8% of 50 decks +7% synergy
Rishkar's Expertise
8% of 50 decks +3% synergy
Kodama's Reach
8% of 50 decks -7% synergy
Rampant Growth
8% of 50 decks -8% synergy
Black Sun's Zenith
7% of 82 decks +7% synergy
Imperial Seal
7% of 82 decks +4% synergy
Scheming Symmetry
6% of 82 decks +5% synergy
Beseech the Mirror
6% of 82 decks +4% synergy
Buried Alive
6% of 82 decks +3% synergy
Living Death
6% of 82 decks +3% synergy
Find // Finality
6% of 50 decks +6% synergy
Unnatural Restoration
6% of 50 decks +4% synergy
Skyshroud Claim
6% of 50 decks +2% synergy
Utility Artifacts
Ashnod's Altar
33% of 82 decks +25% synergy
Phyrexian Altar
30% of 82 decks +26% synergy
Skullclamp
29% of 82 decks +17% synergy
Birthing Pod
20% of 50 decks +19% synergy
Lightning Greaves
17% of 82 decks -8% synergy
Altar of Dementia
16% of 82 decks +13% synergy
Tarrian's Soulcleaver
15% of 66 decks +13% synergy
Swiftfoot Boots
15% of 82 decks -13% synergy
Blade of the Bloodchief
13% of 82 decks +13% synergy
Sword of Truth and Justice
12% of 82 decks +11% synergy
Power Fist
12% of 25 decks +10% synergy
The One Ring
11% of 82 decks +2% synergy
Andúril, Narsil Reforged
10% of 70 decks +9% synergy
Shadowspear
10% of 82 decks +6% synergy
Bow of Nylea
8% of 50 decks +7% synergy
Animation Module
7% of 82 decks +7% synergy
Blade of Selves
6% of 82 decks +5% synergy
Sensei's Divining Top
6% of 82 decks +0% synergy
Tarrian's Journal
6% of 68 decks +5% synergy
Enchantments
Simic Ascendancy
38% of 24 decks +36% synergy
Uncivil Unrest
37% of 19 decks +36% synergy
Court of Garenbrig
33% of 42 decks +31% synergy
Rhystic Study
32% of 34 decks +19% synergy
Greater Good
32% of 50 decks +30% synergy
Smothering Tithe
31% of 35 decks +20% synergy
Resourceful Defense
29% of 35 decks +28% synergy
Cathars' Crusade
29% of 35 decks +26% synergy
Felidar Retreat
29% of 35 decks +25% synergy
Tribute to the World Tree
24% of 50 decks +20% synergy
Vraska Joins Up
24% of 21 decks +22% synergy
Sneak Attack
21% of 19 decks +20% synergy
Mystic Remora
21% of 34 decks +12% synergy
Master Chef
20% of 50 decks +19% synergy
Retribution of the Ancients
18% of 82 decks +18% synergy
Abzan Ascendancy
17% of 23 decks +17% synergy
Noble Heritage
17% of 35 decks +17% synergy
Together Forever
17% of 35 decks +17% synergy
Virtue of Loyalty
17% of 35 decks +16% synergy
Hadana's Climb
17% of 24 decks +16% synergy
Flowering of the White Tree
14% of 35 decks +11% synergy
Sylvan Library
14% of 50 decks +8% synergy
The Meathook Massacre
13% of 82 decks +11% synergy
Doubling Season
12% of 50 decks +8% synergy
Unspeakable Symbol
11% of 82 decks +11% synergy
Journey to Eternity
10% of 50 decks +9% synergy
Animate Dead
10% of 82 decks +5% synergy
Black Market Connections
10% of 82 decks +4% synergy
Dramatic Finale
9% of 35 decks +8% synergy
The Kenriths' Royal Funeral
9% of 35 decks +8% synergy
Land Tax
9% of 35 decks +6% synergy
Anointed Procession
9% of 35 decks +4% synergy
Grave Pact
9% of 82 decks +6% synergy
Ordeal of Nylea
8% of 50 decks +7% synergy
Primal Vigor
8% of 50 decks +7% synergy
Utopia Sprawl
8% of 50 decks +4% synergy
Wild Growth
8% of 50 decks +3% synergy
Thran Vigil
7% of 82 decks +7% synergy
Phyrexian Reclamation
7% of 82 decks +5% synergy
Phyrexian Arena
7% of 82 decks -0% synergy
Pernicious Deed
6% of 50 decks +6% synergy
Parallel Lives
6% of 50 decks +3% synergy
Guardian Project
6% of 50 decks +2% synergy
Battles
Invasion of Ikoria
6% of 50 decks +3% synergy
Planeswalkers
Ajani, the Greathearted
17% of 23 decks +17% synergy
Grist, the Hunger Tide
16% of 50 decks +15% synergy
Ajani, Adversary of Tyrants
9% of 35 decks +8% synergy
Kaya, Geist Hunter
9% of 35 decks +8% synergy
Vraska, Betrayal's Sting
7% of 82 decks +5% synergy
Utility Lands
Boseiju, Who Endures
46% of 50 decks +37% synergy
Eiganjo, Seat of the Empire
46% of 35 decks +41% synergy
Urborg, Tomb of Yawgmoth
39% of 82 decks +29% synergy
Takenuma, Abandoned Mire
29% of 82 decks +24% synergy
Phyrexian Tower
28% of 82 decks +24% synergy
Urza's Saga
24% of 82 decks +17% synergy
Yavimaya, Cradle of Growth
24% of 82 decks +15% synergy
Reliquary Tower
23% of 82 decks -6% synergy
Gavony Township
22% of 23 decks +20% synergy
Minas Tirith
20% of 35 decks +16% synergy
Karn's Bastion
20% of 82 decks +14% synergy
Ancient Tomb
18% of 82 decks +8% synergy
Otawara, Soaring City
18% of 34 decks +9% synergy
Bojuka Bog
17% of 82 decks +2% synergy
Shizo, Death's Storehouse
16% of 82 decks +13% synergy
High Market
16% of 82 decks +13% synergy
Cabal Coffers
16% of 82 decks +10% synergy
Castle Locthwain
13% of 82 decks +11% synergy
Rogue's Passage
13% of 82 decks -6% synergy
Oran-Rief, the Vastwood
12% of 50 decks +10% synergy
Eiganjo Castle
11% of 35 decks +11% synergy
Restless Fortress
9% of 35 decks +8% synergy
Forge of Heroes
9% of 82 decks +8% synergy
The Black Gate
9% of 82 decks +6% synergy
Nykthos, Shrine to Nyx
9% of 82 decks +3% synergy
Llanowar Reborn
8% of 50 decks +7% synergy
Dryad Arbor
8% of 50 decks +6% synergy
Mosswort Bridge
8% of 50 decks +3% synergy
Volrath's Stronghold
7% of 82 decks +7% synergy
Nesting Grounds
7% of 82 decks +6% synergy
Barad-dûr
7% of 82 decks +6% synergy
Minas Morgul, Dark Fortress
7% of 70 decks +6% synergy
Inkmoth Nexus
6% of 82 decks +5% synergy
Pendelhaven
6% of 50 decks +6% synergy
Okina, Temple to the Grandfathers
6% of 50 decks +6% synergy
The Shire
6% of 50 decks +4% synergy
Mana Artifacts
Sol Ring
84% of 82 decks -0% synergy
Arcane Signet
61% of 82 decks -11% synergy
Rakdos Signet
37% of 19 decks +30% synergy
Talisman of Creativity
33% of 12 decks +27% synergy
Talisman of Indulgence
32% of 19 decks +26% synergy
Talisman of Hierarchy
23% of 35 decks +17% synergy
Fellwar Stone
20% of 82 decks -1% synergy
Dimir Signet
18% of 34 decks +10% synergy
Talisman of Dominance
18% of 34 decks +10% synergy
Orzhov Signet
17% of 35 decks +11% synergy
Mana Crypt
13% of 82 decks +2% synergy
Simic Signet
12% of 24 decks +9% synergy
Golgari Signet
12% of 50 decks +9% synergy
Mox Amber
11% of 82 decks +7% synergy
Mind Stone
9% of 82 decks -9% synergy
Relic of Legends
7% of 82 decks +5% synergy
Mox Opal
7% of 82 decks +3% synergy
Jeweled Lotus
7% of 82 decks -0% synergy
Thought Vessel
7% of 82 decks -9% synergy
Liquimetal Torque
6% of 82 decks +2% synergy
Talisman of Resilience
6% of 50 decks +4% synergy
Lands
Temple Garden
83% of 23 decks +74% synergy
Command Tower
82% of 82 decks +8% synergy
Indatha Triome
78% of 23 decks +75% synergy
Raffine's Tower
78% of 9 decks +74% synergy
Godless Shrine
77% of 35 decks +68% synergy
Overgrown Tomb
76% of 50 decks +67% synergy
Watery Grave
74% of 34 decks +63% synergy
Breeding Pool
71% of 24 decks +62% synergy
Xander's Lounge
67% of 12 decks +63% synergy
Zagoth Triome
67% of 24 decks +63% synergy
Spara's Headquarters
67% of 9 decks +63% synergy
Hallowed Fountain
67% of 9 decks +58% synergy
Blood Crypt
63% of 19 decks +54% synergy
Steam Vents
58% of 12 decks +49% synergy
Vault of Champions
57% of 35 decks +51% synergy
Morphic Pool
53% of 34 decks +46% synergy
Sulfurous Springs
53% of 19 decks +48% synergy
Undergrowth Stadium
50% of 50 decks +44% synergy
Rejuvenating Springs
50% of 24 decks +44% synergy
Sulfur Falls
50% of 12 decks +43% synergy
Verdant Catacombs
45% of 82 decks +34% synergy
Bountiful Promenade
43% of 23 decks +38% synergy
Exotic Orchard
43% of 82 decks +7% synergy
Luxury Suite
42% of 19 decks +36% synergy
Dragonskull Summit
42% of 19 decks +35% synergy
Training Center
42% of 12 decks +35% synergy
Drowned Catacomb
41% of 34 decks +35% synergy
Isolated Chapel
40% of 35 decks +34% synergy
Marsh Flats
37% of 82 decks +25% synergy
Seaside Citadel
33% of 9 decks +30% synergy
Hedge Maze
33% of 12 decks +30% synergy
Underground Mortuary
33% of 30 decks +30% synergy
Temple of Epiphany
33% of 12 decks +29% synergy
Hinterland Harbor
33% of 24 decks +28% synergy
Shivan Reef
33% of 12 decks +27% synergy
Windswept Heath
33% of 82 decks +23% synergy
Polluted Delta
33% of 82 decks +22% synergy
Woodland Cemetery
30% of 50 decks +24% synergy
Opulent Palace
29% of 24 decks +26% synergy
Caves of Koilos
29% of 35 decks +22% synergy
Lush Portico
27% of 11 decks +24% synergy
Misty Rainforest
27% of 82 decks +15% synergy
Badlands
26% of 19 decks +23% synergy
Smoldering Marsh
26% of 19 decks +19% synergy
Sandsteppe Citadel
26% of 23 decks +23% synergy
Brightclimb Pathway
26% of 35 decks +23% synergy
Scrubland
26% of 35 decks +23% synergy
Volcanic Island
25% of 12 decks +22% synergy
Crumbling Necropolis
25% of 12 decks +21% synergy
Mana Confluence
24% of 82 decks +17% synergy