Xavier Sal, Infested Captain + Intruder Alarm + Nazgûl + Blue Sun's Twilight

Xavier Sal, Infested Captain
Intruder Alarm
Nazgûl
Blue Sun's Twilight

Requires
Xavier Sal, Infested Captain must be on the battlefield. Intruder Alarm must be on the battlefield. Nazgûl must be on the battlefield. Blue Sun's Twilight must be on the battlefield. Xavier Sal does not have summoning sickness. Mana needed: 5
Steps
  1. Cast Blue Sun's Twilight by paying 5, creating a token copy of Nazgûl.
  2. When the Nazgûl token enters the battlefield, its first ability and Intruder Alarm trigger.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Nazgûl trigger, causing the Ring to tempt you.
  5. Each Nazgûl's second ability triggers, putting that many +1/+1 counters on each Wraith you control.
  6. Activate Xavier Sal's first ability by tapping it and removing a counter from a permanent you control, creating a copy of the Nazgûl token.
  7. Repeat from step 2.
Results
Infinite ETB. Infinite creature tokens. Infinite untap of all creatures. Infinite mana creatures you control can produce. Infinite copies of creature tokens you control. Infinite +1/+1 counters on Wraiths you control.

Xavier Sal, Infested Captain
0.05% of 4399 decks 2 decks
Creatures
Adrix and Nev, Twincasters
100% of 2 decks +98% synergy
Ojer Kaslem, Deepest Growth
100% of 1 decks +98% synergy
Gray Merchant of Asphodel
100% of 2 decks +97% synergy
Agent of Treachery
100% of 2 decks +96% synergy
Master Biomancer
100% of 2 decks +95% synergy
Corridor Monitor
50% of 2 decks +50% synergy
Curiosity Crafter
50% of 2 decks +50% synergy
Chronozoa
50% of 2 decks +50% synergy
Sakashima's Protege
50% of 2 decks +50% synergy
Biovisionary
50% of 2 decks +49% synergy
Faerie Artisans
50% of 2 decks +49% synergy
Callidus Assassin
50% of 2 decks +49% synergy
Wandering Archaic
50% of 2 decks +49% synergy
Undercover Operative
50% of 2 decks +49% synergy
Bramble Sovereign
50% of 2 decks +49% synergy
Sméagol, Helpful Guide
50% of 2 decks +49% synergy
Aboleth Spawn
50% of 2 decks +49% synergy
Generous Patron
50% of 2 decks +49% synergy
Arwen, Weaver of Hope
50% of 2 decks +49% synergy
Biowaste Blob
50% of 2 decks +48% synergy
Fertilid
50% of 2 decks +48% synergy
Devoted Druid
50% of 2 decks +48% synergy
Progenitor Mimic
50% of 2 decks +48% synergy
Biophagus
50% of 2 decks +48% synergy
Sakashima of a Thousand Faces
50% of 2 decks +48% synergy
The Scarab God
50% of 2 decks +48% synergy
Minn, Wily Illusionist
50% of 2 decks +48% synergy
Gruff Triplets
50% of 2 decks +48% synergy
Topiary Stomper
50% of 2 decks +47% synergy
Forgotten Ancient
50% of 2 decks +47% synergy
Consecrated Sphinx
50% of 2 decks +47% synergy
Farhaven Elf
50% of 2 decks +45% synergy
Glen Elendra Archmage
50% of 2 decks +44% synergy
Spark Double
50% of 2 decks +44% synergy
Solemn Simulacrum
50% of 2 decks +39% synergy
Baleful Strix
50% of 2 decks +31% synergy
Eternal Witness
50% of 2 decks +19% synergy
Instants
Elminster's Simulacrum
100% of 2 decks +100% synergy
Sublime Epiphany
100% of 2 decks +99% synergy
Cackling Counterpart
100% of 2 decks +99% synergy
See Double
100% of 2 decks +99% synergy
Legolas's Quick Reflexes
100% of 2 decks +98% synergy
Supplant Form
50% of 2 decks +50% synergy
Theoretical Duplication
50% of 2 decks +50% synergy
Double Major
50% of 2 decks +47% synergy
Deadly Rollick
50% of 2 decks +39% synergy
Swan Song
50% of 2 decks +36% synergy
Arcane Denial
50% of 2 decks +36% synergy
Fierce Guardianship
50% of 2 decks +35% synergy
Beast Within
50% of 2 decks +17% synergy
Sorceries
Hunted by The Family
100% of 1 decks +100% synergy
Stolen Identity
100% of 2 decks +99% synergy
Quantum Misalignment
100% of 1 decks +99% synergy
Irenicus's Vile Duplication
100% of 2 decks +98% synergy
Rite of Replication
100% of 2 decks +98% synergy
Replication Technique
50% of 2 decks +49% synergy
Rally the Galadhrim
50% of 2 decks +49% synergy
Repudiate // Replicate
50% of 2 decks +49% synergy
Quasiduplicate
50% of 2 decks +49% synergy
Croaking Counterpart
50% of 2 decks +48% synergy
Utility Artifacts
Lightning Greaves
100% of 2 decks +76% synergy
Mimic Vat
50% of 2 decks +49% synergy
Thousand-Year Elixir
50% of 2 decks +48% synergy
Agatha's Soul Cauldron
50% of 2 decks +47% synergy
The One Ring
50% of 2 decks +42% synergy
Swiftfoot Boots
50% of 2 decks +25% synergy
Enchantments
City of Death
100% of 2 decks +99% synergy
Vesuvan Duplimancy
100% of 2 decks +97% synergy
Tribute to the World Tree
100% of 2 decks +95% synergy
Freed from the Real
100% of 2 decks +94% synergy
Paradox Zone
50% of 2 decks +50% synergy
Scroll of Isildur
50% of 2 decks +50% synergy
Extravagant Replication
50% of 2 decks +49% synergy
Endless Evil
50% of 2 decks +49% synergy
Master Chef
50% of 2 decks +49% synergy
Doubling Season
50% of 2 decks +43% synergy
Retreat to Coralhelm
50% of 2 decks +42% synergy
Mystic Remora
50% of 2 decks +30% synergy
Battles
Invasion of Segovia
50% of 2 decks +50% synergy
Invasion of Zendikar
50% of 2 decks +48% synergy
Invasion of Amonkhet
50% of 2 decks +47% synergy
Planeswalkers
Vraska, Betrayal's Sting
100% of 2 decks +95% synergy
Tyvar, Jubilant Brawler
100% of 2 decks +93% synergy
Mordenkainen
50% of 2 decks +50% synergy
Freyalise, Llanowar's Fury
50% of 2 decks +49% synergy
Jiang Yanggu, Wildcrafter
50% of 2 decks +49% synergy
Teferi, Temporal Pilgrim
50% of 2 decks +49% synergy
Nissa, Voice of Zendikar
50% of 2 decks +49% synergy
Vraska, Golgari Queen
50% of 2 decks +48% synergy
Kiora, Behemoth Beckoner
50% of 2 decks +47% synergy
Narset, Parter of Veils
50% of 2 decks +47% synergy
Utility Lands
Trenzalore Clocktower
50% of 2 decks +50% synergy
Minas Morgul, Dark Fortress
50% of 2 decks +49% synergy
Yavimaya, Cradle of Growth
50% of 2 decks +30% synergy
Boseiju, Who Endures
50% of 2 decks +28% synergy
Bojuka Bog
50% of 2 decks +23% synergy
Mana Artifacts
Everflowing Chalice
50% of 2 decks +46% synergy
Arcane Signet
50% of 2 decks -19% synergy
Sol Ring
50% of 2 decks -32% synergy
Lands
Breeding Pool
100% of 2 decks +55% synergy
Command Tower
100% of 2 decks +10% synergy
Tendo Ice Bridge
50% of 2 decks +50% synergy
Plaza of Heroes
50% of 2 decks +49% synergy
Reflecting Pool
50% of 2 decks +44% synergy
Deathcap Glade
50% of 2 decks +35% synergy
Shipwreck Marsh
50% of 2 decks +34% synergy
Dreamroot Cascade
50% of 2 decks +29% synergy
Morphic Pool
50% of 2 decks +23% synergy
Polluted Delta
50% of 2 decks +18% synergy
Undergrowth Stadium
50% of 2 decks +17% synergy
Misty Rainforest
50% of 2 decks +16% synergy
Verdant Catacombs
50% of 2 decks +16% synergy
Rejuvenating Springs
50% of 2 decks +16% synergy
Zagoth Triome
50% of 2 decks +8% synergy
Watery Grave
50% of 2 decks +5% synergy
Overgrown Tomb
50% of 2 decks +3% synergy