Deeproot Pilgrimage + Aphetto Alchemist + Kiora's Follower

Deeproot Pilgrimage
Aphetto Alchemist
Kiora's Follower

Requires
Deeproot Pilgrimage must be on the battlefield. Aphetto Alchemist must be on the battlefield. Kiora's Follower must be on the battlefield. Neither creature has summoning sickness.
Steps
  1. Activate either of the creatures by tapping it, targeting the other creature.
  2. If the tapped creature was a Merfolk, Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
  3. Resolve the ability from step 1, untapping the targeted creature.
  4. Repeat.
Results
Infinite ETB. Infinite creature tokens.

Kumena, Tyrant of Orazca
0.12% of 5802 decks 7 decks
Hakbal of the Surging Soul
0.02% of 13620 decks 3 decks
Omo, Queen of Vesuva
0.03% of 6496 decks 2 decks
Kraum, Ludevic's Opus // Kydele, Chosen of Kruphix
0.91% of 110 decks 1 decks
Lonis, Cryptozoologist
0.02% of 4534 decks 1 decks
Helga, Skittish Seer
0.02% of 5275 decks 1 decks
Thrasios, Triton Hero // Toggo, Goblin Weaponsmith
0.14% of 718 decks 1 decks
Magus Lucea Kane
0.01% of 11168 decks 1 decks
Tuvasa the Sunlit
0.02% of 5230 decks 1 decks
Vorel of the Hull Clade
0.05% of 2086 decks 1 decks
Chulane, Teller of Tales
0.01% of 7392 decks 1 decks
New Cards
Enduring Vitality
100% of 3 decks +81% synergy
High Synergy Cards
Three Tree City
75% of 8 decks +65% synergy
Intruder Alarm
65% of 20 decks +63% synergy
Fierce Guardianship
80% of 20 decks +62% synergy
Vodalian Hexcatcher
55% of 20 decks +54% synergy
Swan Song
70% of 20 decks +54% synergy
Boseiju, Who Endures
70% of 20 decks +51% synergy
Thrasios, Triton Hero
50% of 20 decks +48% synergy
Force of Negation
55% of 20 decks +46% synergy
Lord of Atlantis
45% of 20 decks +44% synergy
Emperor Mihail II
45% of 20 decks +44% synergy
Top Cards
Birds of Paradise
70% of 20 decks +43% synergy
Rhystic Study
65% of 20 decks +37% synergy
Cyclonic Rift
60% of 20 decks +32% synergy
Seedborn Muse
50% of 20 decks +42% synergy
Worldly Tutor
50% of 20 decks +36% synergy
Mystic Remora
50% of 20 decks +32% synergy
Merrow Reejerey
45% of 20 decks +44% synergy
An Offer You Can't Refuse
45% of 20 decks +24% synergy
Tishana's Tidebinder
41% of 17 decks +39% synergy
Lullmage Mentor
40% of 20 decks +40% synergy
Creatures
Master of the Pearl Trident
40% of 20 decks +39% synergy
Stonybrook Banneret
40% of 20 decks +39% synergy
Delighted Halfling
40% of 20 decks +26% synergy
Llanowar Elves
40% of 20 decks +19% synergy
Singer of Swift Rivers
36% of 14 decks +33% synergy
Kelpie Guide
35% of 20 decks +34% synergy
Svyelun of Sea and Sky
35% of 20 decks +34% synergy
Vizier of Tumbling Sands
35% of 20 decks +34% synergy
Merfolk Mistbinder
35% of 20 decks +34% synergy
Unctus, Grand Metatect
35% of 20 decks +33% synergy
Forensic Researcher
31% of 13 decks +30% synergy
Cursecatcher
30% of 20 decks +30% synergy
Fatestitcher
30% of 20 decks +29% synergy
Merfolk Sovereign
30% of 20 decks +29% synergy
Seeker of Skybreak
30% of 20 decks +29% synergy
Harbinger of the Seas
30% of 10 decks +28% synergy
Arbor Elf
30% of 20 decks +24% synergy
Thassa's Oracle
30% of 20 decks +23% synergy
Elvish Mystic
30% of 20 decks +12% synergy
Eternal Witness
30% of 20 decks +9% synergy
Kumena, Tyrant of Orazca
25% of 20 decks +24% synergy
Ioreth of the Healing House
25% of 20 decks +23% synergy
Thieving Skydiver
25% of 20 decks +23% synergy
Elvish Spirit Guide
25% of 20 decks +22% synergy
Murkfiend Liege
25% of 20 decks +21% synergy
Kinnan, Bonder Prodigy
25% of 20 decks +21% synergy
Fyndhorn Elves
25% of 20 decks +12% synergy
Deeproot Historian
21% of 14 decks +20% synergy
Grimoire Thief
20% of 20 decks +20% synergy
Seahunter
20% of 20 decks +20% synergy
Merfolk Trickster
20% of 20 decks +20% synergy
Merrow Harbinger
20% of 20 decks +20% synergy
Fallowsage
20% of 20 decks +20% synergy
Deeproot Elite
20% of 20 decks +19% synergy
Thada Adel, Acquisitor
20% of 20 decks +19% synergy
Seafloor Oracle
20% of 20 decks +19% synergy
Kopala, Warden of Waves
20% of 20 decks +19% synergy
Herald of Secret Streams
20% of 20 decks +17% synergy
Hakbal of the Surging Soul
18% of 17 decks +16% synergy
Nicanzil, Current Conductor
18% of 17 decks +15% synergy
Hope Tender
15% of 20 decks +15% synergy
Cosi's Trickster
15% of 20 decks +15% synergy
Mistcaller
15% of 20 decks +15% synergy
Wanderwine Prophets
15% of 20 decks +15% synergy
Forerunner of the Heralds
15% of 20 decks +15% synergy
Benthic Biomancer
15% of 20 decks +14% synergy
Merfolk Looter
15% of 20 decks +14% synergy
Drift of Phantasms
15% of 20 decks +14% synergy
Metallic Mimic
15% of 20 decks +14% synergy
Priest of Titania
15% of 20 decks +11% synergy
Instants
Deflecting Swat
100% of 3 decks +84% synergy
Force of Will
60% of 20 decks +49% synergy
Mana Drain
40% of 20 decks +25% synergy
Heroic Intervention
40% of 20 decks +10% synergy
Flusterstorm
35% of 20 decks +28% synergy
Beast Within
35% of 20 decks -3% synergy
Mindbreak Trap
30% of 20 decks +26% synergy
Dramatic Reversal
30% of 20 decks +25% synergy
Veil of Summer
30% of 20 decks +24% synergy
Counterspell
30% of 20 decks -13% synergy
Muddle the Mixture
25% of 20 decks +20% synergy
Mental Misstep
25% of 20 decks +19% synergy
Archdruid's Charm
25% of 12 decks +18% synergy
Mystical Tutor
25% of 20 decks +10% synergy
Legolas's Quick Reflexes
20% of 20 decks +17% synergy
Chord of Calling
20% of 20 decks +14% synergy
Crop Rotation
20% of 20 decks +10% synergy
Pongify
20% of 20 decks +8% synergy
Arcane Denial
20% of 20 decks +0% synergy
Chain of Vapor
15% of 20 decks +11% synergy
Pact of Negation
15% of 20 decks +8% synergy
Nature's Claim
15% of 20 decks +6% synergy
Growth Spiral
15% of 20 decks -7% synergy
Sorceries
Finale of Devastation
40% of 20 decks +32% synergy
Nature's Lore
35% of 20 decks +3% synergy
Three Visits
30% of 20 decks +5% synergy
Farseek
30% of 20 decks -4% synergy
Eldritch Evolution
25% of 20 decks +20% synergy
Green Sun's Zenith
25% of 20 decks +19% synergy
Kodama's Reach
20% of 20 decks -11% synergy
Cultivate
20% of 20 decks -26% synergy
Personal Tutor
15% of 20 decks +14% synergy
Curse of the Swine
15% of 20 decks +11% synergy
Bala Ged Recovery
15% of 20 decks +6% synergy
Rampant Growth
15% of 20 decks -20% synergy
Utility Artifacts
The One Ring
40% of 20 decks +31% synergy
Thousand-Year Elixir
30% of 20 decks +28% synergy
Isochron Scepter
25% of 20 decks +23% synergy
Lightning Greaves
25% of 20 decks -0% synergy
Rings of Brighthearth
15% of 20 decks +13% synergy
Maskwood Nexus
15% of 20 decks +12% synergy
Enchantments
Merrow Commerce
35% of 20 decks +34% synergy
Earthcraft
25% of 20 decks +24% synergy
Quest for Renewal
25% of 20 decks +24% synergy
Freed from the Real
25% of 20 decks +23% synergy
Cryptolith Rite
25% of 20 decks +22% synergy
Sylvan Library
25% of 20 decks +13% synergy
Deeproot Waters
20% of 20 decks +19% synergy
Back to Basics
20% of 20 decks +19% synergy
Pemmin's Aura
20% of 20 decks +19% synergy
Concordant Crossroads
20% of 20 decks +17% synergy
Simic Ascendancy
20% of 20 decks +14% synergy
Counterbalance
15% of 20 decks +14% synergy
Elven Chorus
15% of 20 decks +10% synergy
Utopia Sprawl
15% of 20 decks +7% synergy
Wild Growth
15% of 20 decks +4% synergy
Battles
Invasion of Ikoria
20% of 20 decks +15% synergy
Planeswalkers
Tezzeret the Seeker
15% of 20 decks +12% synergy
Utility Lands
Otawara, Soaring City
55% of 20 decks +38% synergy
Ancient Tomb
45% of 20 decks +35% synergy
Gaea's Cradle
40% of 20 decks +34% synergy
Yavimaya, Cradle of Growth
35% of 20 decks +26% synergy
Minamo, School at Water's Edge
30% of 20 decks +26% synergy
Reliquary Tower
25% of 20 decks -5% synergy
Mutavault
15% of 20 decks +14% synergy
Maze of Ith
15% of 20 decks +12% synergy
Mana Artifacts
Sol Ring
85% of 20 decks +1% synergy
Arcane Signet
60% of 20 decks -12% synergy
Chrome Mox
40% of 20 decks +34% synergy
Mana Crypt
35% of 20 decks +27% synergy
Mox Diamond
30% of 20 decks +26% synergy
Lotus Petal
30% of 20 decks +23% synergy
Mox Amber
20% of 20 decks +16% synergy
Mana Vault
20% of 20 decks +14% synergy
Talisman of Curiosity
15% of 20 decks +3% synergy
Fellwar Stone
15% of 20 decks -6% synergy
Lands
Steam Vents
100% of 3 decks +61% synergy
Stomping Ground
100% of 3 decks +59% synergy
Breeding Pool
70% of 20 decks +29% synergy
Command Tower
70% of 20 decks -4% synergy
Misty Rainforest
60% of 20 decks +48% synergy
Rejuvenating Springs
55% of 20 decks +26% synergy
Cavern of Souls
50% of 20 decks +43% synergy
Yavimaya Coast
45% of 20 decks +18% synergy
Flooded Strand
40% of 20 decks +29% synergy
Tropical Island
40% of 20 decks +26% synergy
Dreamroot Cascade
40% of 20 decks +21% synergy
Hedge Maze
38% of 13 decks +25% synergy
Gemstone Caverns
35% of 20 decks +30% synergy
Wooded Foothills
35% of 20 decks +25% synergy
Scalding Tarn
35% of 20 decks +24% synergy
Polluted Delta
35% of 20 decks +24% synergy
Hinterland Harbor
35% of 20 decks +7% synergy
Exotic Orchard
35% of 20 decks -1% synergy
Prismatic Vista
30% of 20 decks +25% synergy
Waterlogged Grove
30% of 20 decks +23% synergy
Verdant Catacombs
30% of 20 decks +19% synergy
Mana Confluence
25% of 20 decks +18% synergy
Windswept Heath
25% of 20 decks +14% synergy
City of Brass
20% of 20 decks +12% synergy
Barkchannel Pathway
20% of 20 decks +11% synergy
Flooded Grove
20% of 20 decks +8% synergy