Haunted One + Relic of Legends + Fleshbag Marauder + Retribution of the Ancients

Haunted One
Relic of Legends
Fleshbag Marauder
Retribution of the Ancients

Requires
Burakos, Party Leader must be on the battlefield. Haunted One must be on the battlefield. Relic of Legends must be on the battlefield. Fleshbag Marauder must be in hand. Retribution of the Ancients must be on the battlefield. Burakos, Party Leader must be your commander. Burakos does not have a +1/+1 counter on it. Mana needed: 2
Steps
  1. Cast Fleshbag Marauder by paying 2.
  2. When Fleshbag Marauder enters the battlefield, it triggers.
  3. Holding priority, activate Relic of Legends' second ability by tapping Burakos, adding .
  4. Burakos triggers, giving it and all creatures you control that share a creature type with it +2/+0 and undying until end of turn.
  5. Resolve the Fleshbag Marauder trigger from step 2, causing you to sacrifice Burakos, and each opponent to sacrifice a creature.
  6. When Burakos dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  7. Activate Retribution of the Ancients by paying and removing the +1/+1 counter from Burakos, giving Fleshbag Marauder -1/-1 until end of turn.
  8. Fleshbag Marauder dies as a state-based action due to having 0 toughness, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter from it.
  9. Repeat steps 2 through 6 one additional time.
  10. Activate Retribution of the Ancients by paying and removing the +1/+1 counter from Burakos and Fleshbag Marauder, giving Fleshbag Marauder -2/-2 until end of turn.
  11. Repeat from step 8.
Results
Each opponent sacrifices all creatures they control. Infinite death triggers. Infinite ETB. Infinite LTB. Infinitely powerful Orcs, Wizards, Warriors, Rogues, and Clerics except Burakos and Fleshbag Marauder until end of turn. Infinite sacrifice triggers.

Burakos, Party Leader
2.00% of 50 decks 1 decks
Creatures
Aetherborn Marauder
100% of 1 decks +100% synergy
Malakir Blood-Priest
100% of 1 decks +100% synergy
Calculating Lich
100% of 1 decks +100% synergy
Pain Seer
100% of 1 decks +100% synergy
Nadier, Agent of the Duskenel
100% of 1 decks +100% synergy
Universal Automaton
100% of 1 decks +100% synergy
Solemn Doomguide
100% of 1 decks +100% synergy
Dire Fleet Ravager
100% of 1 decks +99% synergy
Mindblade Render
100% of 1 decks +99% synergy
Custodi Lich
100% of 1 decks +99% synergy
Keen Duelist
100% of 1 decks +99% synergy
Ruthless Technomancer
100% of 1 decks +98% synergy
Tenacious Underdog
100% of 1 decks +98% synergy
Puppeteer Clique
100% of 1 decks +98% synergy
Nullpriest of Oblivion
100% of 1 decks +98% synergy
Nadier's Nightblade
100% of 1 decks +98% synergy
Disciple of the Vault
100% of 1 decks +97% synergy
Gonti, Lord of Luxury
100% of 1 decks +97% synergy
Soldevi Adnate
100% of 1 decks +96% synergy
Bloodsoaked Champion
100% of 1 decks +95% synergy
Disciple of Bolas
100% of 1 decks +95% synergy
Changeling Outcast
100% of 1 decks +95% synergy
Merciless Executioner
100% of 1 decks +95% synergy
Nighthawk Scavenger
100% of 1 decks +94% synergy
Demon's Disciple
100% of 1 decks +92% synergy
Butcher of Malakir
100% of 1 decks +91% synergy
Jadar, Ghoulcaller of Nephalia
100% of 1 decks +90% synergy
Grim Haruspex
100% of 1 decks +88% synergy
Reassembling Skeleton
100% of 1 decks +85% synergy
Viscera Seer
100% of 1 decks +84% synergy
Morbid Opportunist
100% of 1 decks +83% synergy
Zulaport Cutthroat
100% of 1 decks +76% synergy
Instants
Curtains' Call
100% of 1 decks +98% synergy
Force of Despair
100% of 1 decks +91% synergy
Defile
100% of 1 decks +58% synergy
Sorceries
Thwart the Grave
100% of 1 decks +100% synergy
Coveted Prize
100% of 1 decks +100% synergy
Cut of the Profits
100% of 1 decks +99% synergy
Persist
100% of 1 decks +95% synergy
In Garruk's Wake
100% of 1 decks +94% synergy
Patriarch's Bidding
100% of 1 decks +94% synergy
Victimize
100% of 1 decks +78% synergy
Sign in Blood
100% of 1 decks +60% synergy
Utility Artifacts
Diviner's Wand
100% of 1 decks +100% synergy
Obsidian Battle-Axe
100% of 1 decks +100% synergy
Mukotai Soulripper
100% of 1 decks +100% synergy
Multiclass Baldric
100% of 1 decks +100% synergy
Key to the City
100% of 1 decks +98% synergy
Wayfarer's Bauble
100% of 1 decks +79% synergy
Enchantments
Death Pit Offering
100% of 1 decks +100% synergy
Fallen Ideal
100% of 1 decks +99% synergy
Utility Lands
Nesting Grounds
100% of 1 decks +100% synergy
Tectonic Edge
100% of 1 decks +99% synergy
Field of Ruin
100% of 1 decks +97% synergy
Rogue's Passage
100% of 1 decks +85% synergy
Mana Artifacts
Cultivator's Caravan
100% of 1 decks +100% synergy
Springleaf Drum
100% of 1 decks +98% synergy
Liquimetal Torque
100% of 1 decks +96% synergy
Heraldic Banner
100% of 1 decks +94% synergy
Charcoal Diamond
100% of 1 decks +74% synergy
Arcane Signet
100% of 1 decks +37% synergy
Lands
Holdout Settlement
100% of 1 decks +100% synergy
Myriad Landscape
100% of 1 decks +69% synergy