Agatha's Soul Cauldron + Kiki-Jiki, Mirror Breaker + Arwen, Weaver of Hope

Agatha's Soul Cauldron
Kiki-Jiki, Mirror Breaker
Arwen, Weaver of Hope

Requires
Agatha's Soul Cauldron must be on the battlefield. Kiki-Jiki, Mirror Breaker must be in exile (exiled by Agatha's Soul Cauldron). Arwen, Weaver of Hope must be on the battlefield.
Steps
  1. Activate a creature you control with a +1/+1 counter on it using Kiki-Jiki's ability by tapping it, creating a token copy of any nonlegendary creature you control with haste that enters the battlefield with at least one +1/+1 counter on it due to Arwen.
  2. Repeat.
Results
Infinite creature tokens with haste. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Grumgully, the Generous
0.37% of 1079 decks 4 decks
Agatha of the Vile Cauldron
0.04% of 4760 decks 2 decks
Francisco, Fowl Marauder // Tana, the Bloodsower
3.23% of 31 decks 1 decks
Gimli, Mournful Avenger
0.12% of 869 decks 1 decks
Loot, the Pathfinder
0.04% of 2610 decks 1 decks
Kediss, Emberclaw Familiar // Reyhan, Last of the Abzan
2.22% of 45 decks 1 decks
Reyhan, Last of the Abzan // Rograkh, Son of Rohgahh
0.17% of 605 decks 1 decks
Minsc & Boo, Timeless Heroes
0.02% of 6412 decks 1 decks
Shalai and Hallar
0.01% of 8158 decks 1 decks
High Synergy Cards
Rhythm of the Wild
77% of 13 decks +53% synergy
Kami of Whispered Hopes
54% of 13 decks +47% synergy
Grumgully, the Generous
46% of 13 decks +44% synergy
Walking Ballista
46% of 13 decks +44% synergy
Boseiju, Who Endures
62% of 13 decks +43% synergy
The Ozolith
46% of 13 decks +43% synergy
Kodama of the West Tree
46% of 13 decks +42% synergy
Worldly Tutor
54% of 13 decks +40% synergy
Lesser Masticore
38% of 13 decks +38% synergy
Inspiring Call
46% of 13 decks +38% synergy
Top Cards
Blasphemous Act
62% of 13 decks +28% synergy
Three Visits
54% of 13 decks +29% synergy
Birds of Paradise
54% of 13 decks +26% synergy
Heroic Intervention
54% of 13 decks +24% synergy
Beast Within
54% of 13 decks +17% synergy
Hardened Scales
46% of 13 decks +37% synergy
Gamble
46% of 13 decks +37% synergy
Goblin Anarchomancer
46% of 13 decks +33% synergy
Deflecting Swat
46% of 13 decks +30% synergy
Eternal Witness
46% of 13 decks +27% synergy
Game Changers
Vampiric Tutor
100% of 3 decks +83% synergy
Jeska's Will
62% of 13 decks +45% synergy
Gaea's Cradle
31% of 13 decks +25% synergy
The One Ring
23% of 13 decks +15% synergy
Creatures
Incubation Druid
38% of 13 decks +34% synergy
Dockside Extortionist
38% of 13 decks +30% synergy
Vexing Shusher
31% of 13 decks +29% synergy
Devoted Druid
31% of 13 decks +28% synergy
Forgotten Ancient
31% of 13 decks +25% synergy
Beast Whisperer
31% of 13 decks +19% synergy
Aerie Ouphes
23% of 13 decks +23% synergy
Scuzzback Marauders
23% of 13 decks +23% synergy
Thunderblust
23% of 13 decks +23% synergy
Melira, Sylvok Outcast
23% of 13 decks +23% synergy
Woodfall Primus
23% of 13 decks +22% synergy
Agatha of the Vile Cauldron
23% of 13 decks +22% synergy
Krenko, Mob Boss
23% of 13 decks +21% synergy
Tinder Wall
23% of 13 decks +20% synergy
Combat Celebrant
23% of 13 decks +20% synergy
Purphoros, God of the Forge
23% of 13 decks +19% synergy
Rishkar, Peema Renegade
23% of 13 decks +19% synergy
Selvala, Heart of the Wilds
23% of 13 decks +18% synergy
Anger
23% of 13 decks +17% synergy
Delighted Halfling
23% of 13 decks +11% synergy
Fyndhorn Elves
23% of 13 decks +11% synergy
Elvish Mystic
23% of 13 decks +6% synergy
Sakura-Tribe Elder
23% of 13 decks +5% synergy
Llanowar Elves
23% of 13 decks +2% synergy
Instants
Chord of Calling
31% of 13 decks +25% synergy
Veil of Summer
31% of 13 decks +25% synergy
Pyroblast
23% of 13 decks +17% synergy
Sorceries
Nature's Lore
46% of 13 decks +14% synergy
Finale of Devastation
38% of 13 decks +30% synergy
Farseek
31% of 13 decks -4% synergy
Eldritch Evolution
23% of 13 decks +18% synergy
Bala Ged Recovery
23% of 13 decks +15% synergy
Kodama's Reach
23% of 13 decks -7% synergy
Rampant Growth
23% of 13 decks -11% synergy
Cultivate
23% of 13 decks -22% synergy
Utility Artifacts
Ozolith, the Shattered Spire
31% of 13 decks +26% synergy
The Great Henge
31% of 13 decks +21% synergy
Blasting Station
23% of 13 decks +23% synergy
Altar of Dementia
23% of 13 decks +20% synergy
Phyrexian Altar
23% of 13 decks +19% synergy
Ashnod's Altar
23% of 13 decks +16% synergy
Lightning Greaves
23% of 13 decks -2% synergy
Swiftfoot Boots
23% of 13 decks -4% synergy
Enchantments
Tribute to the World Tree
38% of 13 decks +32% synergy
Impact Tremors
38% of 13 decks +28% synergy
Uncivil Unrest
31% of 13 decks +29% synergy
Goblin Bombardment
31% of 13 decks +25% synergy
Fable of the Mirror-Breaker
23% of 13 decks +21% synergy
Court of Garenbrig
23% of 13 decks +21% synergy
All Will Be One
23% of 13 decks +21% synergy
Defense of the Heart
23% of 13 decks +20% synergy
Branching Evolution
23% of 13 decks +17% synergy
Guardian Project
23% of 13 decks +15% synergy
Doubling Season
23% of 13 decks +13% synergy
Sylvan Library
23% of 13 decks +12% synergy
Battles
Invasion of Ikoria
23% of 13 decks +19% synergy
Utility Lands
Yavimaya, Cradle of Growth
46% of 13 decks +37% synergy
Kessig Wolf Run
46% of 13 decks +30% synergy
Arena of Glory
43% of 7 decks +37% synergy
Mosswort Bridge
31% of 13 decks +20% synergy
Reliquary Tower
31% of 13 decks +1% synergy
Urza's Saga
23% of 13 decks +16% synergy
Mana Artifacts
Sol Ring
100% of 13 decks +16% synergy
Arcane Signet
69% of 13 decks -3% synergy
Lands
Command Tower
100% of 13 decks +26% synergy
Wooded Foothills
85% of 13 decks +74% synergy
Stomping Ground
85% of 13 decks +44% synergy
Spire Garden
77% of 13 decks +53% synergy
Rootbound Crag
62% of 13 decks +36% synergy
Verdant Catacombs
54% of 13 decks +43% synergy
Cragcrown Pathway
38% of 13 decks +30% synergy
Arid Mesa
38% of 13 decks +28% synergy
Bloodstained Mire
38% of 13 decks +28% synergy
Taiga
38% of 13 decks +26% synergy
Cinder Glade
38% of 13 decks -0% synergy
Grove of the Burnwillows
31% of 13 decks +29% synergy
Prismatic Vista
31% of 13 decks +26% synergy
Reflecting Pool
31% of 13 decks +25% synergy
Exotic Orchard
31% of 13 decks -5% synergy
Commercial District
25% of 12 decks +16% synergy
Fire-Lit Thicket
23% of 13 decks +19% synergy
Cavern of Souls
23% of 13 decks +16% synergy
Windswept Heath
23% of 13 decks +12% synergy
Scalding Tarn
23% of 13 decks +12% synergy
Misty Rainforest
23% of 13 decks +12% synergy
Gruul Turf
23% of 13 decks +8% synergy
Game Trail
23% of 13 decks +7% synergy
Rockfall Vale
23% of 13 decks +1% synergy