We Ride at Dawn + Acererak the Archlich + Intruder Alarm

We Ride at Dawn
Acererak the Archlich
Intruder Alarm

Requires
We Ride at Dawn must be on the battlefield. Acererak the Archlich must be in hand. Intruder Alarm must be on the battlefield. You have not completed or are currently venturing in Tomb of Annihilation. You control at least three untapped creatures, one of which must be black.
Steps
  1. Cast Acererak the Archlich by tapping three creatures you control, one of which must be black.
  2. When Acererak the Archlich enters the battlefield, its first ability and Intruder Alarm trigger.
  3. Resolve the Acererak the Archlich trigger, returning it to your hand from the battlefield and causing you to venture into Lost Mine of Phandelver.
  4. Resolve the Intruder Alarm trigger, untapping all creatures.
  5. Repeat.
Results
Infinite card draw. Infinite draw triggers. Near-infinite +1/+1 counters. Near-infinite colored mana. Near-infinite creature tokens. Near-infinite ETB. Near-infinite lifegain. Near-infinite lifegain triggers. Near-infinite lifeloss. Near-infinite LTB. Near-infinite storm count. Near-infinite Treasure tokens. Near-infinite untap of all creatures. Near-infinite ventures into the dungeon.

Sefris of the Hidden Ways
0.01% of 8722 decks 1 decks
Creatures
Lumbering Battlement
100% of 1 decks +100% synergy
Secret Door
100% of 1 decks +100% synergy
Fell Stinger
100% of 1 decks +100% synergy
Sydri, Galvanic Genius
100% of 1 decks +99% synergy
Stunt Double
100% of 1 decks +99% synergy
Phantom Steed
100% of 1 decks +99% synergy
Clone
100% of 1 decks +99% synergy
Safana, Calimport Cutthroat
100% of 1 decks +99% synergy
Angel of Indemnity
100% of 1 decks +99% synergy
Reveillark
100% of 1 decks +98% synergy
Yuan-Ti Malison
100% of 1 decks +97% synergy
Seasoned Dungeoneer
100% of 1 decks +97% synergy
Glasspool Mimic
100% of 1 decks +97% synergy
Oltec Matterweaver
100% of 1 decks +97% synergy
Hama Pashar, Ruin Seeker
100% of 1 decks +96% synergy
Triumphant Adventurer
100% of 1 decks +96% synergy
White Plume Adventurer
100% of 1 decks +96% synergy
Nadaar, Selfless Paladin
100% of 1 decks +96% synergy
Radiant Solar
100% of 1 decks +95% synergy
Phantasmal Image
100% of 1 decks +95% synergy
Academy Manufactor
100% of 1 decks +95% synergy
Karmic Guide
100% of 1 decks +95% synergy
Sun Titan
100% of 1 decks +87% synergy
Instants
Bar the Gate
100% of 1 decks +98% synergy
Entomb
100% of 1 decks +93% synergy
Deadly Rollick
100% of 1 decks +93% synergy
Force of Will
100% of 1 decks +87% synergy
Fierce Guardianship
100% of 1 decks +82% synergy
Vampiric Tutor
100% of 1 decks +79% synergy
Enlightened Tutor
100% of 1 decks +78% synergy
Dovin's Veto
100% of 1 decks +73% synergy
Path to Exile
100% of 1 decks +57% synergy
Swords to Plowshares
100% of 1 decks +31% synergy
Sorceries
Chart a Course
100% of 1 decks +99% synergy
From the Catacombs
100% of 1 decks +99% synergy
Night's Whisper
100% of 1 decks +97% synergy
Buried Alive
100% of 1 decks +96% synergy
Demonic Tutor
100% of 1 decks +76% synergy
Utility Artifacts
Clock of Omens
100% of 1 decks +99% synergy
Staff of Domination
100% of 1 decks +99% synergy
Immovable Rod
100% of 1 decks +99% synergy
Lithoform Engine
100% of 1 decks +99% synergy
Krark-Clan Ironworks
100% of 1 decks +99% synergy
Strionic Resonator
100% of 1 decks +94% synergy
Time Sieve
100% of 1 decks +92% synergy
Enchantments
Heartless Summoning
100% of 1 decks +100% synergy
Ensoul Artifact
100% of 1 decks +100% synergy
Pemmin's Aura
100% of 1 decks +99% synergy
Freed from the Real
100% of 1 decks +99% synergy
Rooftop Storm
100% of 1 decks +96% synergy
Anointed Procession
100% of 1 decks +90% synergy
Utility Lands
Dungeon Descent
100% of 1 decks +99% synergy
Mana Artifacts
Paradise Mantle
100% of 1 decks +100% synergy
Dungeoneer's Pack
100% of 1 decks +100% synergy
Relic of Legends
100% of 1 decks +99% synergy
Sarevok's Tome
100% of 1 decks +98% synergy
Mana Crypt
100% of 1 decks +88% synergy
Arcane Signet
100% of 1 decks +13% synergy
Sol Ring
100% of 1 decks +10% synergy
Lands
Forbidden Orchard
100% of 1 decks +97% synergy
Reflecting Pool
100% of 1 decks +91% synergy
Hengegate Pathway
100% of 1 decks +91% synergy
Clearwater Pathway
100% of 1 decks +91% synergy
Brightclimb Pathway
100% of 1 decks +91% synergy
Mana Confluence
100% of 1 decks +87% synergy
Underground Sea
100% of 1 decks +85% synergy
Tundra
100% of 1 decks +85% synergy
Scrubland
100% of 1 decks +85% synergy
City of Brass
100% of 1 decks +85% synergy
Undercity Sewers
100% of 1 decks +84% synergy
Shattered Sanctum
100% of 1 decks +84% synergy
Shadowy Backstreet
100% of 1 decks +84% synergy
Meticulous Archive
100% of 1 decks +83% synergy
Deserted Beach
100% of 1 decks +80% synergy
Shipwreck Marsh
100% of 1 decks +79% synergy
Drowned Catacomb
100% of 1 decks +74% synergy
Isolated Chapel
100% of 1 decks +72% synergy
Glacial Fortress
100% of 1 decks +71% synergy
Polluted Delta
100% of 1 decks +68% synergy
Flooded Strand
100% of 1 decks +67% synergy
Vault of Champions
100% of 1 decks +66% synergy
Morphic Pool
100% of 1 decks +65% synergy
Marsh Flats
100% of 1 decks +65% synergy
Sea of Clouds
100% of 1 decks +63% synergy
Raffine's Tower
100% of 1 decks +56% synergy
Watery Grave
100% of 1 decks +52% synergy
Godless Shrine
100% of 1 decks +52% synergy
Hallowed Fountain
100% of 1 decks +51% synergy
Exotic Orchard
100% of 1 decks +42% synergy
Command Tower
100% of 1 decks +8% synergy