Haunted One + Thornbite Staff + Phyrexian Altar

Haunted One
Thornbite Staff
Phyrexian Altar

Requires
Xavier Sal, Infested Captain must be on the battlefield. Haunted One must be on the battlefield. Thornbite Staff must be on the battlefield. Phyrexian Altar must be on the battlefield. Xavier Sal, Infested Captain must be your commander. There is at least one counter on a permanent you control except Xavier Sal. Xavier Sal does not have summoning sickness. Thornbite Staff attached to Xavier Sal. You control at least one additional nontoken Human, Fungus and/or Pirate that has no more than one +1/+1 counter on it.
Steps
  1. Activate Xavier Sal's first ability by tapping it and removing a +1/+1 counter from the additional nontoken Human, Fungus and/or Pirate if it has one, or any counter from another permanent you control otherwise.
  2. Xavier Sal triggers, causing it and all other creatures you control that share a creature type with it to get +2/+0 and gain undying until end of turn.
  3. Resolve the Xavier Sal ability, causing you to populate.
  4. Activate Phyrexian Altar by sacrificing the additional Human, Fungus and/or Pirate, adding one mana of any color.
  5. When the creature dies, its undying ability and Xavier Sal trigger.
  6. Resolve the creature's undying trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  7. Resolve the Xavier Sal trigger, untapping it.
  8. Repeat.
Results
Infinite LTB. Infinite ETB. Infinite colored mana. Infinite sacrifice triggers. Infinite death triggers. Infinitely powerful Humans, Fungi and Pirates you control until end of turn.

Xavier Sal, Infested Captain
0.02% of 4302 decks 1 decks
Creatures
Elvish Farmer
100% of 1 decks +100% synergy
Thallid Devourer
100% of 1 decks +100% synergy
Sporecrown Thallid
100% of 1 decks +100% synergy
Spore Flower
100% of 1 decks +100% synergy
Thelon of Havenwood
100% of 1 decks +100% synergy
Thallid Germinator
100% of 1 decks +100% synergy
Savage Thallid
100% of 1 decks +100% synergy
Thallid Shell-Dweller
100% of 1 decks +99% synergy
Vitaspore Thallid
100% of 1 decks +99% synergy
Sporoloth Ancient
100% of 1 decks +99% synergy
Psychotrope Thallid
100% of 1 decks +99% synergy
Sporesower Thallid
100% of 1 decks +99% synergy
Thallid
100% of 1 decks +99% synergy
Slimefoot, the Stowaway
100% of 1 decks +99% synergy
Deathspore Thallid
100% of 1 decks +99% synergy
Utopia Mycon
100% of 1 decks +99% synergy
Scurry Oak
100% of 1 decks +99% synergy
Tendershoot Dryad
100% of 1 decks +99% synergy
Adrix and Nev, Twincasters
100% of 1 decks +98% synergy
Zulaport Cutthroat
100% of 1 decks +96% synergy
Ezuri, Stalker of Spheres
100% of 1 decks +95% synergy
Roaming Throne
100% of 1 decks +95% synergy
Winding Constrictor
100% of 1 decks +91% synergy
Evolution Sage
100% of 1 decks +91% synergy
Cankerbloom
100% of 1 decks +90% synergy
Instants
Cackling Counterpart
100% of 1 decks +99% synergy
Village Rites
100% of 1 decks +98% synergy
Prologue to Phyresis
100% of 1 decks +98% synergy
Muddle the Mixture
100% of 1 decks +97% synergy
Chord of Calling
100% of 1 decks +97% synergy
Brainstorm
100% of 1 decks +91% synergy
Arcane Denial
100% of 1 decks +86% synergy
An Offer You Can't Refuse
100% of 1 decks +83% synergy
Heroic Intervention
100% of 1 decks +79% synergy
Beast Within
100% of 1 decks +67% synergy
Assassin's Trophy
100% of 1 decks +65% synergy
Sorceries
Maelstrom Pulse
100% of 1 decks +99% synergy
Kindred Dominance
100% of 1 decks +99% synergy
Ponder
100% of 1 decks +96% synergy
Green Sun's Zenith
100% of 1 decks +96% synergy
Diabolic Intent
100% of 1 decks +94% synergy
Three Visits
100% of 1 decks +76% synergy
Nature's Lore
100% of 1 decks +72% synergy
Farseek
100% of 1 decks +59% synergy
Cultivate
100% of 1 decks +55% synergy
Utility Artifacts
Illusionist's Bracers
100% of 1 decks +99% synergy
Sting, the Glinting Dagger
100% of 1 decks +98% synergy
Skullclamp
100% of 1 decks +96% synergy
Lightning Greaves
100% of 1 decks +76% synergy
Swiftfoot Boots
100% of 1 decks +75% synergy
Enchantments
Paradox Haze
100% of 1 decks +100% synergy
Beastmaster Ascension
100% of 1 decks +98% synergy
Parallel Lives
100% of 1 decks +98% synergy
Reflections of Littjara
100% of 1 decks +98% synergy
Intruder Alarm
100% of 1 decks +96% synergy
Phyrexian Arena
100% of 1 decks +94% synergy
Freed from the Real
100% of 1 decks +94% synergy
Rhystic Study
100% of 1 decks +75% synergy
Battles
Invasion of Ikoria
100% of 1 decks +96% synergy
Planeswalkers
Liliana, Dreadhorde General
100% of 1 decks +98% synergy
Utility Lands
Dryad Arbor
100% of 1 decks +97% synergy
Bojuka Bog
100% of 1 decks +72% synergy
Reliquary Tower
100% of 1 decks +68% synergy
Mana Artifacts
Arcane Signet
100% of 1 decks +31% synergy
Sol Ring
100% of 1 decks +18% synergy
Lands
Tangled Islet
100% of 1 decks +93% synergy
Haunted Mire
100% of 1 decks +93% synergy
Fabled Passage
100% of 1 decks +85% synergy
Myriad Landscape
100% of 1 decks +85% synergy
Temple of Deceit
100% of 1 decks +83% synergy
Path of Ancestry
100% of 1 decks +82% synergy
Temple of Malady
100% of 1 decks +80% synergy
Temple of Mystery
100% of 1 decks +80% synergy
Sunken Hollow
100% of 1 decks +66% synergy
Opulent Palace
100% of 1 decks +50% synergy
Command Tower
100% of 1 decks +10% synergy