Venerated Rotpriest + Storm Herd + Semester's End

Venerated Rotpriest
Storm Herd
Semester's End

Requires
Venerated Rotpriest must be on the battlefield. Storm Herd must be in hand. Semester's End must be in hand. Your life total is at least thirty, minus one for each poison counter your opponents have and for each creature you control. Mana needed: 11
Steps
  1. Cast Storm Herd by paying 8, creating a number of 1/1 Pegasus creature tokens equal to your life total.
  2. Cast Semester's End by paying 3, targeting every creature you control.
  3. Venerated Rotpriest triggers for each creature targeted by Semester's End.
  4. Resolve the first trigger, causing an opponent to get a poison counter.
  5. Repeat step 4 until an opponent loses the game due to having ten poison counters, then repeat for each other opponent.
Results
Each opponent loses the game.

Rocco, Cabaretti Caterer
0.05% of 5859 decks 3 decks
Atraxa, Praetors' Voice
0.01% of 35211 decks 3 decks
Derevi, Empyrial Tactician
0.03% of 7409 decks 2 decks
Trostani, Selesnya's Voice
0.02% of 4619 decks 1 decks
Esika, God of the Tree
0.01% of 17767 decks 1 decks
Jodah, Archmage Eternal
0.01% of 8074 decks 1 decks
Karador, Ghost Chieftain
0.02% of 5443 decks 1 decks
Aragorn, the Uniter
0.01% of 16380 decks 1 decks
Ghired, Mirror of the Wilds
0.04% of 2319 decks 1 decks
High Synergy Cards
Dwarven Song
71% of 7 decks +71% synergy
Eerie Interlude
64% of 14 decks +60% synergy
Scapegoat
57% of 14 decks +57% synergy
Leave // Chance
57% of 7 decks +57% synergy
Bloom Tender
50% of 14 decks +42% synergy
Heaven's Gate
36% of 14 decks +36% synergy
Sylvan Paradise
36% of 14 decks +36% synergy
Noble Hierarch
50% of 8 decks +34% synergy
Clever Concealment
36% of 14 decks +31% synergy
Worldly Tutor
43% of 14 decks +29% synergy
Top Cards
Swords to Plowshares
57% of 14 decks -6% synergy
Birds of Paradise
50% of 14 decks +23% synergy
Smothering Tithe
43% of 14 decks +18% synergy
Cultivate
43% of 14 decks -4% synergy
Eternal Witness
36% of 14 decks +15% synergy
Kodama's Reach
36% of 14 decks +4% synergy
Grand Crescendo
29% of 14 decks +26% synergy
Helm of the Host
29% of 14 decks +25% synergy
White Sun's Twilight
29% of 14 decks +25% synergy
Aura Mutation
29% of 14 decks +25% synergy
Creatures
Vorinclex, Monstrous Raider
29% of 14 decks +25% synergy
Llanowar Elves
29% of 14 decks +8% synergy
Fauna Shaman
21% of 14 decks +18% synergy
Temur Sabertooth
21% of 14 decks +18% synergy
Soul Warden
21% of 14 decks +16% synergy
Arbor Elf
21% of 14 decks +15% synergy
Esper Sentinel
21% of 14 decks +1% synergy
Instants
Vampiric Tutor
50% of 6 decks +32% synergy
Artifact Mutation
43% of 7 decks +38% synergy
Mystical Tutor
38% of 8 decks +22% synergy
Teferi's Protection
29% of 14 decks +9% synergy
Heroic Intervention
29% of 14 decks -1% synergy
Path to Exile
29% of 14 decks -17% synergy
Secure the Wastes
21% of 14 decks +19% synergy
Crop Rotation
21% of 14 decks +12% synergy
Enlightened Tutor
21% of 14 decks +4% synergy
Beast Within
21% of 14 decks -17% synergy
Sorceries
Demonic Tutor
50% of 6 decks +28% synergy
Regrowth
21% of 14 decks +18% synergy
Idyllic Tutor
21% of 14 decks +16% synergy
Green Sun's Zenith
21% of 14 decks +15% synergy
Austere Command
21% of 14 decks +9% synergy
Three Visits
21% of 14 decks -3% synergy
Utility Artifacts
Ashnod's Altar
21% of 14 decks +14% synergy
Lightning Greaves
21% of 14 decks -4% synergy
Enchantments
Doubling Season
29% of 14 decks +20% synergy
Sylvan Library
21% of 14 decks +10% synergy
Mirari's Wake
21% of 14 decks +7% synergy
Utility Lands
Kher Keep
43% of 7 decks +40% synergy
Sokenzan, Crucible of Defiance
43% of 7 decks +38% synergy
Boseiju, Who Endures
36% of 14 decks +16% synergy
Yavimaya, Cradle of Growth
29% of 14 decks +19% synergy
Gaea's Cradle
21% of 14 decks +16% synergy
Ancient Tomb
21% of 14 decks +11% synergy
Mana Artifacts
Sol Ring
79% of 14 decks -6% synergy
Arcane Signet
71% of 14 decks -1% synergy
Chromatic Lantern
36% of 14 decks +26% synergy
Lands
Hallowed Fountain
88% of 8 decks +47% synergy
Command Tower
86% of 14 decks +12% synergy
Indatha Triome
83% of 6 decks +52% synergy
Raffine's Tower
80% of 5 decks +52% synergy
Zagoth Triome
80% of 5 decks +49% synergy
Watery Grave
80% of 5 decks +39% synergy
Temple Garden
71% of 14 decks +31% synergy
Spara's Headquarters
62% of 8 decks +30% synergy
Breeding Pool
62% of 8 decks +21% synergy
Vault of Champions
50% of 6 decks +24% synergy
Godless Shrine
50% of 6 decks +9% synergy
Jetmir's Garden
43% of 7 decks +10% synergy
Stomping Ground
43% of 7 decks +2% synergy
Tundra
38% of 8 decks +24% synergy
Tropical Island
38% of 8 decks +23% synergy
Windswept Heath
36% of 14 decks +25% synergy
Bountiful Promenade
36% of 14 decks +11% synergy
Exotic Orchard
36% of 14 decks +0% synergy
Savannah
29% of 14 decks +16% synergy
Marsh Flats
21% of 14 decks +10% synergy
Verdant Catacombs
21% of 14 decks +10% synergy
Misty Rainforest
21% of 14 decks +10% synergy
Myriad Landscape
21% of 14 decks +2% synergy
Evolving Wilds
21% of 14 decks +0% synergy