Worldfire + Hive Mind + Vampiric Tutor + Najal, the Storm Runner

Worldfire
Hive Mind
Vampiric Tutor
Najal, the Storm Runner

Requires
Worldfire must be in hand. Hive Mind must be on the battlefield. Vampiric Tutor must be in hand. Najal, the Storm Runner must be on the battlefield. Mana needed: 6
Steps
  1. Cast Vampiric Tutor by paying .
  2. Hive Mind triggers, causing each opponent to create a copy of Vampiric Tutor.
  3. Holding priority, cast Worldfire by paying 6.
  4. Hive Mind triggers, causing each opponent to create a copy of Worldfire.
  5. Resolve each Worldfire on the stack, exiling all permanents, all cards in all hands and graveyards, and setting each player's life total to one.
  6. Resolve the first opponent's copy of Vampiric Tutor, causing them to search their library for a card, put it on top of their library and lose 2 life.
  7. The opponent loses the game due to having less than zero life.
  8. Repeat from step 6 for each remaining opponent.
Results
Each opponent loses the game. Exile all cards in all hands and graveyards. Exile all permanents. Near-infinite lifeloss.

Be'lakor, the Dark Master
0.01% of 10958 decks 1 decks
Creatures
Rusted Slasher
100% of 1 decks +100% synergy
Steelfin Whale
100% of 1 decks +100% synergy
Gravewaker
100% of 1 decks +100% synergy
Sly Requisitioner
100% of 1 decks +100% synergy
Herald of Torment
100% of 1 decks +100% synergy
Mirran Spy
100% of 1 decks +100% synergy
Demon of Catastrophes
100% of 1 decks +100% synergy
Skithiryx, the Blight Dragon
100% of 1 decks +100% synergy
Demon of Wailing Agonies
100% of 1 decks +100% synergy
Abhorrent Overlord
100% of 1 decks +100% synergy
Arcbound Ravager
100% of 1 decks +100% synergy
Kothophed, Soul Hoarder
100% of 1 decks +99% synergy
Desecration Demon
100% of 1 decks +99% synergy
Demon of Dark Schemes
100% of 1 decks +99% synergy
Overseer of the Damned
100% of 1 decks +99% synergy
Lord of the Void
100% of 1 decks +99% synergy
Master of Cruelties
100% of 1 decks +99% synergy
Demonlord Belzenlok
100% of 1 decks +99% synergy
Reaper from the Abyss
100% of 1 decks +98% synergy
Ob Nixilis, Unshackled
100% of 1 decks +98% synergy
Jin-Gitaxias, Progress Tyrant
100% of 1 decks +98% synergy
Sower of Discord
100% of 1 decks +97% synergy
Bloodgift Demon
100% of 1 decks +97% synergy
Harvester of Souls
100% of 1 decks +97% synergy
Rakdos, the Showstopper
100% of 1 decks +96% synergy
Rune-Scarred Demon
100% of 1 decks +96% synergy
Archfiend of Depravity
100% of 1 decks +96% synergy
Sheoldred, Whispering One
100% of 1 decks +96% synergy
Chaos Defiler
100% of 1 decks +96% synergy
Emry, Lurker of the Loch
100% of 1 decks +95% synergy
Instants
Make Obsolete
100% of 1 decks +100% synergy
Banishing Knack
100% of 1 decks +100% synergy
Narset's Reversal
100% of 1 decks +96% synergy
Ghostly Flicker
100% of 1 decks +93% synergy
Sorceries
Demonic Collusion
100% of 1 decks +100% synergy
Cruel Tutor
100% of 1 decks +100% synergy
Ancient Craving
100% of 1 decks +100% synergy
Beseech the Queen
100% of 1 decks +100% synergy
Dark Petition
100% of 1 decks +99% synergy
Painful Truths
100% of 1 decks +97% synergy
Read the Bones
100% of 1 decks +96% synergy
Sign in Blood
100% of 1 decks +96% synergy
Night's Whisper
100% of 1 decks +95% synergy
Diabolic Tutor
100% of 1 decks +94% synergy
Demonic Tutor
100% of 1 decks +76% synergy
Utility Artifacts
Kormus Bell
100% of 1 decks +100% synergy
Salvaging Station
100% of 1 decks +100% synergy
Whip of Erebos
100% of 1 decks +95% synergy
Enchantments
Demonic Rising
100% of 1 decks +100% synergy
Underworld Connections
100% of 1 decks +100% synergy
Greed
100% of 1 decks +99% synergy
Leyline of the Void
100% of 1 decks +99% synergy
Bitterblossom
100% of 1 decks +98% synergy
Necropotence
100% of 1 decks +95% synergy
Dreadhorde Invasion
100% of 1 decks +94% synergy
Phyrexian Arena
100% of 1 decks +90% synergy
Planeswalkers
Liliana Vess
100% of 1 decks +99% synergy
Utility Lands
Nykthos, Shrine to Nyx
100% of 1 decks +99% synergy
Molten Slagheap
100% of 1 decks +98% synergy
Barren Moor
100% of 1 decks +98% synergy
Cabal Coffers
100% of 1 decks +94% synergy
Ancient Tomb
100% of 1 decks +87% synergy
Urborg, Tomb of Yawgmoth
100% of 1 decks +84% synergy
Mana Artifacts
Sol Ring
100% of 1 decks +9% synergy
Lands
Tarnished Citadel
100% of 1 decks +99% synergy
Prismatic Vista
100% of 1 decks +96% synergy
Mana Confluence
100% of 1 decks +88% synergy
City of Brass
100% of 1 decks +86% synergy
Badlands
100% of 1 decks +86% synergy
Sulfurous Springs
100% of 1 decks +76% synergy
Underground River
100% of 1 decks +75% synergy
Polluted Delta
100% of 1 decks +70% synergy
Bloodstained Mire
100% of 1 decks +69% synergy
Scalding Tarn
100% of 1 decks +69% synergy
Path of Ancestry
100% of 1 decks +67% synergy
Smoldering Marsh
100% of 1 decks +61% synergy
Drowned Catacomb
100% of 1 decks +61% synergy
Sunken Hollow
100% of 1 decks +58% synergy
Blood Crypt
100% of 1 decks +56% synergy
Steam Vents
100% of 1 decks +56% synergy
Watery Grave
100% of 1 decks +55% synergy
Exotic Orchard
100% of 1 decks +43% synergy
Crumbling Necropolis
100% of 1 decks +41% synergy
Command Tower
100% of 1 decks +8% synergy