Agatha's Soul Cauldron + Triskelion + Strangleroot Geist

Agatha's Soul Cauldron
Triskelion
Strangleroot Geist

Requires
Agatha's Soul Cauldron must be on the battlefield. Triskelion must be in exile (exiled by Agatha's Soul Cauldron). Strangleroot Geist must be on the battlefield.
Steps
  1. Activate Strangleroot Geist using Triskelion's ability by removing a +1/+1 counter from it.
  2. Repeat step 1 until Strangleroot Geist has no +1/+1 counters on it.
  3. Resolve all Strangleroot Geist abilities dealing 1 damage to Strangleroot Geist, and any remaining damage to any target(s).
  4. Strangleroot Geist dies as a state-based action due to having 0 toughness.
  5. Strangleroot Geist's undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB.

Ghave, Guru of Spores
0.05% of 5757 decks 3 decks
Lonis, Genetics Expert
0.25% of 787 decks 2 decks
Meren of Clan Nel Toth
0.01% of 14861 decks 2 decks
Volrath, the Shapestealer
0.08% of 2620 decks 2 decks
Tayam, Luminous Enigma
0.02% of 5719 decks 1 decks
Reyhan, Last of the Abzan // Yoshimaru, Ever Faithful
0.06% of 1646 decks 1 decks
Kenrith, the Returned King
0.00% of 20905 decks 1 decks
Indominus Rex, Alpha
0.02% of 6308 decks 1 decks
Rishkar, Peema Renegade
0.41% of 245 decks 1 decks
Reyhan, Last of the Abzan // Rograkh, Son of Rohgahh
0.17% of 603 decks 1 decks
Oviya, Automech Artisan
0.09% of 1145 decks 1 decks
Hapatra, Vizier of Poisons
0.02% of 4364 decks 1 decks
Chatterfang, Squirrel General
0.01% of 16800 decks 1 decks
Grist, the Hunger Tide
0.02% of 5406 decks 1 decks
Ziatora, the Incinerator
0.01% of 7593 decks 1 decks
Sisay, Weatherlight Captain
0.01% of 11860 decks 1 decks
Agent Frank Horrigan
0.06% of 1696 decks 1 decks
Sarulf, Realm Eater
0.05% of 1886 decks 1 decks
High Synergy Cards
Young Wolf
87% of 23 decks +87% synergy
Walking Ballista
83% of 23 decks +80% synergy
Yawgmoth, Thran Physician
68% of 19 decks +65% synergy
Mikaeus, the Unhallowed
58% of 19 decks +55% synergy
Tribute Mage
57% of 7 decks +55% synergy
Devoted Druid
57% of 23 decks +54% synergy
Chord of Calling
52% of 23 decks +47% synergy
Grist, the Hunger Tide
47% of 19 decks +43% synergy
Viscera Seer
47% of 19 decks +39% synergy
Zulaport Cutthroat
47% of 19 decks +38% synergy
Top Cards
Swords to Plowshares
57% of 7 decks -5% synergy
Birds of Paradise
57% of 23 decks +29% synergy
Ashnod's Altar
43% of 23 decks +36% synergy
Worldly Tutor
43% of 23 decks +30% synergy
Carrion Feeder
42% of 19 decks +37% synergy
Marionette Apprentice
40% of 10 decks +35% synergy
Eldritch Evolution
39% of 23 decks +35% synergy
Geralf's Messenger
37% of 19 decks +36% synergy
Diabolic Intent
37% of 19 decks +29% synergy
Blood Artist
37% of 19 decks +25% synergy
Game Changers
Enlightened Tutor
57% of 7 decks +40% synergy
Fierce Guardianship
57% of 7 decks +39% synergy
Vampiric Tutor
47% of 19 decks +30% synergy
Demonic Tutor
47% of 19 decks +26% synergy
Urza, Lord High Artificer
43% of 7 decks +40% synergy
Kinnan, Bonder Prodigy
43% of 7 decks +39% synergy
Cyclonic Rift
43% of 7 decks +17% synergy
The One Ring
26% of 23 decks +18% synergy
Mana Vault
17% of 23 decks +11% synergy
Ancient Tomb
17% of 23 decks +7% synergy
Creatures
Ob Nixilis, Captive Kingpin
75% of 4 decks +74% synergy
Kitchen Finks
43% of 7 decks +42% synergy
Heliod, Sun-Crowned
43% of 7 decks +40% synergy
Ranger-Captain of Eos
43% of 7 decks +38% synergy
Phyrexian Metamorph
43% of 7 decks +36% synergy
Faeburrow Elder
43% of 7 decks +32% synergy
Eternal Witness
35% of 23 decks +15% synergy
Basking Broodscale
33% of 12 decks +32% synergy
Evolution Witness
33% of 12 decks +30% synergy
Butcher Ghoul
32% of 19 decks +31% synergy
Hapatra, Vizier of Poisons
32% of 19 decks +31% synergy
Orcish Bowmasters
32% of 19 decks +22% synergy
Elves of Deep Shadow
32% of 19 decks +21% synergy
Llanowar Elves
30% of 23 decks +10% synergy
Warren Soultrader
30% of 10 decks +25% synergy
Yahenni, Undying Partisan
26% of 19 decks +23% synergy
Pitiless Plunderer
26% of 19 decks +19% synergy
Incubation Druid
26% of 23 decks +21% synergy
Delighted Halfling
26% of 23 decks +14% synergy
Wall of Roots
22% of 23 decks +21% synergy
Protean Hulk
22% of 23 decks +20% synergy
Renata, Called to the Hunt
22% of 23 decks +20% synergy
Kami of Whispered Hopes
22% of 23 decks +15% synergy
Francisco, Fowl Marauder
21% of 19 decks +21% synergy
Fiend Artisan
21% of 19 decks +19% synergy
Chatterfang, Squirrel General
21% of 19 decks +16% synergy
Deathrite Shaman
21% of 19 decks +9% synergy
Massacre Girl, Known Killer
19% of 16 decks +17% synergy
Vein Ripper
19% of 16 decks +17% synergy
Cryptic Trilobite
17% of 23 decks +17% synergy
Spike Feeder
17% of 23 decks +17% synergy
Champion of Lambholt
17% of 23 decks +11% synergy
Bloom Tender
17% of 23 decks +10% synergy
Dina, Soul Steeper
16% of 19 decks +13% synergy
Mazirek, Kraul Death Priest
16% of 19 decks +13% synergy
Gravecrawler
16% of 19 decks +13% synergy
Lesser Masticore
13% of 23 decks +13% synergy
Melira, Sylvok Outcast
13% of 23 decks +13% synergy
Pili-Pala
13% of 23 decks +13% synergy
Experiment One
13% of 23 decks +13% synergy
Herd Baloth
13% of 23 decks +12% synergy
Metallic Mimic
13% of 23 decks +12% synergy
Karametra's Acolyte
13% of 23 decks +11% synergy
Scurry Oak
13% of 23 decks +11% synergy
Scavenging Ooze
13% of 23 decks +10% synergy
Nyxbloom Ancient
13% of 23 decks +9% synergy
Haywire Mite
13% of 23 decks +9% synergy
Jaheira, Friend of the Forest
13% of 23 decks +8% synergy
Seedborn Muse
13% of 23 decks +5% synergy
Fyndhorn Elves
13% of 23 decks +1% synergy
Instants
Mana Drain
43% of 7 decks +28% synergy
Dark Ritual
32% of 19 decks +9% synergy
Entomb
26% of 19 decks +19% synergy
Beast Within
22% of 23 decks -15% synergy
Deadly Dispute
21% of 19 decks +10% synergy
Assassin's Trophy
21% of 19 decks -9% synergy
Autumn's Veil
17% of 23 decks +16% synergy
Go for the Throat
16% of 19 decks +9% synergy
Deadly Rollick
16% of 19 decks +4% synergy
Veil of Summer
13% of 23 decks +7% synergy
Heroic Intervention
13% of 23 decks -17% synergy
Sorceries
Neoform
43% of 7 decks +38% synergy
Fabricate
43% of 7 decks +37% synergy
Reanimate
32% of 19 decks +15% synergy
Culling Ritual
26% of 19 decks +15% synergy
Green Sun's Zenith
26% of 23 decks +20% synergy
Finale of Devastation
26% of 23 decks +18% synergy
Rampant Growth
22% of 23 decks -13% synergy
Buried Alive
21% of 19 decks +15% synergy
Damnation
21% of 19 decks +14% synergy
Toxic Deluge
21% of 19 decks +3% synergy
Life // Death
16% of 19 decks +14% synergy
Grim Tutor
16% of 19 decks +11% synergy
Diabolic Tutor
16% of 19 decks +10% synergy
Sylvan Tutor
13% of 23 decks +12% synergy
Kodama's Reach
13% of 23 decks -17% synergy
Nature's Lore
13% of 23 decks -19% synergy
Farseek
13% of 23 decks -21% synergy
Utility Artifacts
Altar of Dementia
35% of 23 decks +32% synergy
Phyrexian Altar
26% of 23 decks +22% synergy
Skullclamp
26% of 23 decks +14% synergy
Birthing Pod
22% of 23 decks +19% synergy
Lightning Greaves
22% of 23 decks -3% synergy
Tarrian's Soulcleaver
17% of 23 decks +16% synergy
Wishclaw Talisman
16% of 19 decks +10% synergy
Blade of the Bloodchief
13% of 23 decks +12% synergy
The Ozolith
13% of 23 decks +10% synergy
The Great Henge
13% of 23 decks +3% synergy
Swiftfoot Boots
13% of 23 decks -14% synergy
Enchantments
Aura Shards
43% of 7 decks +34% synergy
Mystic Remora
43% of 7 decks +26% synergy
Hardened Scales
22% of 23 decks +12% synergy
Insidious Roots
19% of 16 decks +13% synergy
Nest of Scarabs
16% of 19 decks +15% synergy
Bastion of Remembrance
16% of 19 decks +10% synergy
Animate Dead
16% of 19 decks +7% synergy
Phyrexian Arena
16% of 19 decks +0% synergy
Flourishing Defenses
13% of 23 decks +13% synergy
Squirrel Nest
13% of 23 decks +12% synergy
Branching Evolution
13% of 23 decks +7% synergy
Doubling Season
13% of 23 decks +3% synergy
Sylvan Library
13% of 23 decks +2% synergy
Planeswalkers
Tyvar, Jubilant Brawler
16% of 19 decks +12% synergy
Utility Lands
Boseiju, Who Endures
39% of 23 decks +20% synergy
Yavimaya, Cradle of Growth
26% of 23 decks +17% synergy
Dryad Arbor
22% of 23 decks +18% synergy
Phyrexian Tower
21% of 19 decks +12% synergy
Nesting Grounds
17% of 23 decks +16% synergy
Urza's Saga
17% of 23 decks +10% synergy
Bojuka Bog
16% of 19 decks -14% synergy
Khalni Garden
13% of 23 decks +12% synergy
Nykthos, Shrine to Nyx
13% of 23 decks +8% synergy
Urborg, Tomb of Yawgmoth
13% of 23 decks +4% synergy
Mana Artifacts
Arcane Signet
87% of 23 decks +15% synergy
Sol Ring
87% of 23 decks +3% synergy
Fellwar Stone
22% of 23 decks +1% synergy
Mox Amber
17% of 23 decks +13% synergy
Golgari Signet
16% of 19 decks +4% synergy
Talisman of Resilience
16% of 19 decks +3% synergy
Mox Opal
13% of 23 decks +9% synergy
Chrome Mox
13% of 23 decks +7% synergy
Lands
Temple Garden
86% of 7 decks +46% synergy
Breeding Pool
86% of 7 decks +45% synergy
Blood Crypt
75% of 4 decks +37% synergy
Stomping Ground
75% of 4 decks +35% synergy
Command Tower
74% of 23 decks -0% synergy
Overgrown Tomb
74% of 19 decks +32% synergy
Godless Shrine
71% of 7 decks +31% synergy
Zagoth Triome
60% of 5 decks +30% synergy
Watery Grave
60% of 5 decks +20% synergy
Vault of Champions
57% of 7 decks +32% synergy
Verdant Catacombs
57% of 23 decks +45% synergy
Undergrowth Stadium
53% of 19 decks +27% synergy
Exotic Orchard
43% of 23 decks +7% synergy
Bountiful Promenade
43% of 7 decks +19% synergy
Indatha Triome
43% of 7 decks +13% synergy
Llanowar Wastes
42% of 19 decks +16% synergy
Twilight Mire
32% of 19 decks +21% synergy
Woodland Cemetery
32% of 19 decks +2% synergy
Wooded Foothills
26% of 23 decks +16% synergy
Misty Rainforest
26% of 23 decks +15% synergy
Underground Mortuary
25% of 16 decks +12% synergy
Mana Confluence
22% of 23 decks +15% synergy
Windswept Heath
22% of 23 decks +11% synergy
Bloodstained Mire
22% of 23 decks +11% synergy
Marsh Flats
22% of 23 decks +11% synergy
Polluted Delta
22% of 23 decks +10% synergy
Tainted Wood
21% of 19 decks +8% synergy
Golgari Rot Farm
21% of 19 decks +3% synergy
City of Brass
17% of 23 decks +10% synergy
Arid Mesa
17% of 23 decks +7% synergy
Evolving Wilds
17% of 23 decks -4% synergy
Blooming Marsh
16% of 19 decks +11% synergy
Bayou
16% of 19 decks +2% synergy
Gemstone Mine
13% of 23 decks +12% synergy
The Mycosynth Gardens
13% of 23 decks +11% synergy
Ash Barrens
13% of 23 decks +8% synergy
Gemstone Caverns
13% of 23 decks +8% synergy