Intruder Alarm

Bracket

• B1 Exhibition — Not in the same deck as its two-card combo partners: Hullbreaker Horror, Chulane, Teller of Tales, Shorikai, Genesis Engine, Shrieking Drake, Deadeye Navigator, Venser, Shaper Savant, Lullmage Mentor, Sliver Queen, Imperious Perfect, Whitemane Lion, Emiel the Blessed, Presence of Gond, Phelddagrif, Berta, Wise Extrapolator, Ancestral Statue, Retraction Helix, Dream Stalker, Questing Phelddagrif, Kiki-Jiki, Mirror Breaker, Saheeli, the Sun's Brilliance, Krenko, Mob Boss, Myr Propagator, Belisarius Cawl, Myr Matrix, Merieke Ri Berit, Banishing Knack, Rukarumel, Biologist, Blinking Spirit, Cayth, Famed Mechanist, Goblin Welder, Kor Skyfisher, Man-o'-War, Eldrazi Displacer, Splinter Twin, Marrow-Gnawer, Ulamog's Dreadsire, Torpor Orb, Rhys the Redeemed, Wall of Kelp, Aethersnipe, Xerex Strobe-Knight, Weaver of Harmony, The Jolly Balloon Man, Thraben Doomsayer, Sprout Swarm, Fable of the Mirror-Breaker // Reflection of Kiki-Jiki, Ghoulcaller Gisa, Bloodline Keeper // Lord of Lineage, Orthion, Hero of Lavabrink, Hushbringer, Stonecloaker, Jan Jansen, Chaos Crafter, Biogenic Ooze, Hell's Caretaker, Kazandu Tuskcaller, Vedalken Mastermind, Satoru Umezawa, Elemental Mastery, Steward of Solidarity, Lich Lord of Unx, Romana II, Joo Dee, One of Many, Skirsdag High Priest, Livio, Oathsworn Sentinel, Nemata, Grove Guardian, Jade Mage, Hushwing Gryff, Voice of the Woods, Speaker of the Heavens, Ghired, Mirror of the Wilds, Cybernetica Datasmith, Oviya Pashiri, Sage Lifecrafter, Rakka Mar, Godsire, Tocatli Honor Guard, Kianne, Dean of Substance // Imbraham, Dean of Theory, Puppet Conjurer, Tolsimir Wolfblood, Selesnya Evangel, Drana's Chosen, Flamewright, Tariel, Reckoner of Souls, Jungle Patrol, Jund Battlemage
• B2 Core — Not in the same deck as its two-card combo partners: Hullbreaker Horror, Chulane, Teller of Tales, Shorikai, Genesis Engine, Shrieking Drake, Deadeye Navigator, Venser, Shaper Savant, Lullmage Mentor, Sliver Queen, Imperious Perfect, Whitemane Lion, Emiel the Blessed, Presence of Gond, Phelddagrif, Berta, Wise Extrapolator, Ancestral Statue, Retraction Helix, Dream Stalker, Questing Phelddagrif, Kiki-Jiki, Mirror Breaker, Saheeli, the Sun's Brilliance, Krenko, Mob Boss, Myr Propagator, Belisarius Cawl, Myr Matrix, Merieke Ri Berit, Banishing Knack, Rukarumel, Biologist, Blinking Spirit, Cayth, Famed Mechanist, Goblin Welder, Kor Skyfisher, Man-o'-War, Eldrazi Displacer, Splinter Twin, Marrow-Gnawer, Ulamog's Dreadsire, Torpor Orb, Rhys the Redeemed, Wall of Kelp, Aethersnipe, Xerex Strobe-Knight, Weaver of Harmony, The Jolly Balloon Man, Thraben Doomsayer, Sprout Swarm, Fable of the Mirror-Breaker // Reflection of Kiki-Jiki, Ghoulcaller Gisa, Bloodline Keeper // Lord of Lineage, Orthion, Hero of Lavabrink, Hushbringer, Stonecloaker, Jan Jansen, Chaos Crafter, Biogenic Ooze, Hell's Caretaker, Kazandu Tuskcaller, Vedalken Mastermind, Satoru Umezawa, Elemental Mastery, Steward of Solidarity, Lich Lord of Unx, Romana II, Joo Dee, One of Many, Skirsdag High Priest, Livio, Oathsworn Sentinel, Nemata, Grove Guardian, Jade Mage, Hushwing Gryff, Voice of the Woods, Speaker of the Heavens, Ghired, Mirror of the Wilds, Cybernetica Datasmith, Oviya Pashiri, Sage Lifecrafter, Rakka Mar, Godsire, Tocatli Honor Guard, Kianne, Dean of Substance // Imbraham, Dean of Theory, Puppet Conjurer, Tolsimir Wolfblood, Selesnya Evangel, Drana's Chosen, Flamewright, Tariel, Reckoner of Souls, Jungle Patrol, Jund Battlemage
• B3 Upgraded — Not in the same deck as its early two-card combo partners: Hullbreaker Horror, Chulane, Teller of Tales, Shorikai, Genesis Engine, Shrieking Drake, Deadeye Navigator, Venser, Shaper Savant, Lullmage Mentor, Sliver Queen, Imperious Perfect, Whitemane Lion, Emiel the Blessed, Presence of Gond, Phelddagrif, Berta, Wise Extrapolator, Ancestral Statue, Retraction Helix, Dream Stalker, Questing Phelddagrif, Kiki-Jiki, Mirror Breaker, Saheeli, the Sun's Brilliance, Krenko, Mob Boss, Myr Propagator, Belisarius Cawl, Myr Matrix, Merieke Ri Berit, Banishing Knack, Rukarumel, Biologist, Blinking Spirit, Cayth, Famed Mechanist, Goblin Welder, Kor Skyfisher, Man-o'-War, Eldrazi Displacer, Splinter Twin, Marrow-Gnawer, Ulamog's Dreadsire, Torpor Orb, Rhys the Redeemed, Wall of Kelp, Aethersnipe, Xerex Strobe-Knight, Weaver of Harmony, The Jolly Balloon Man, Thraben Doomsayer, Sprout Swarm, Fable of the Mirror-Breaker // Reflection of Kiki-Jiki, Ghoulcaller Gisa, Bloodline Keeper // Lord of Lineage, Orthion, Hero of Lavabrink, Hushbringer, Stonecloaker, Jan Jansen, Chaos Crafter, Biogenic Ooze, Hell's Caretaker, Kazandu Tuskcaller, Vedalken Mastermind, Satoru Umezawa, Elemental Mastery, Steward of Solidarity, Lich Lord of Unx, Romana II, Joo Dee, One of Many, Skirsdag High Priest, Livio, Oathsworn Sentinel, Nemata, Grove Guardian, Jade Mage, Hushwing Gryff, Voice of the Woods, Speaker of the Heavens, Ghired, Mirror of the Wilds, Cybernetica Datasmith, Oviya Pashiri, Sage Lifecrafter, Rakka Mar, Godsire, Tocatli Honor Guard, Kianne, Dean of Substance // Imbraham, Dean of Theory, Puppet Conjurer, Tolsimir Wolfblood, Selesnya Evangel, Drana's Chosen, Flamewright, Jungle Patrol, Jund Battlemage
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• Two-card combo with Hullbreaker Horror, Chulane, Teller of Tales, Shorikai, Genesis Engine, Shrieking Drake, Deadeye Navigator, Venser, Shaper Savant, Lullmage Mentor, Sliver Queen, Imperious Perfect, Whitemane Lion, Emiel the Blessed, Presence of Gond, Phelddagrif, Berta, Wise Extrapolator, Ancestral Statue, Retraction Helix, Dream Stalker, Questing Phelddagrif, Kiki-Jiki, Mirror Breaker, Saheeli, the Sun's Brilliance, Krenko, Mob Boss, Myr Propagator, Belisarius Cawl, Myr Matrix, Merieke Ri Berit, Banishing Knack, Rukarumel, Biologist, Blinking Spirit, Cayth, Famed Mechanist, Goblin Welder, Kor Skyfisher, Man-o'-War, Eldrazi Displacer, Splinter Twin, Marrow-Gnawer, Ulamog's Dreadsire, Torpor Orb, Rhys the Redeemed, Wall of Kelp, Aethersnipe, Xerex Strobe-Knight, Weaver of Harmony, The Jolly Balloon Man, Thraben Doomsayer, Sprout Swarm, Fable of the Mirror-Breaker // Reflection of Kiki-Jiki, Ghoulcaller Gisa, Bloodline Keeper // Lord of Lineage, Orthion, Hero of Lavabrink, Hushbringer, Stonecloaker, Jan Jansen, Chaos Crafter, Biogenic Ooze, Hell's Caretaker, Kazandu Tuskcaller, Vedalken Mastermind, Satoru Umezawa, Elemental Mastery, Steward of Solidarity, Lich Lord of Unx, Romana II, Joo Dee, One of Many, Skirsdag High Priest, Livio, Oathsworn Sentinel, Nemata, Grove Guardian, Jade Mage, Hushwing Gryff, Voice of the Woods, Speaker of the Heavens, Ghired, Mirror of the Wilds, Cybernetica Datasmith, Oviya Pashiri, Sage Lifecrafter, Rakka Mar, Godsire, Tocatli Honor Guard, Kianne, Dean of Substance // Imbraham, Dean of Theory, Puppet Conjurer, Tolsimir Wolfblood, Selesnya Evangel, Drana's Chosen, Flamewright, Tariel, Reckoner of Souls, Jungle Patrol, Jund Battlemage (early with Hullbreaker Horror, Chulane, Teller of Tales, Shorikai, Genesis Engine, Shrieking Drake, Deadeye Navigator, Venser, Shaper Savant, Lullmage Mentor, Sliver Queen, Imperious Perfect, Whitemane Lion, Emiel the Blessed, Presence of Gond, Phelddagrif, Berta, Wise Extrapolator, Ancestral Statue, Retraction Helix, Dream Stalker, Questing Phelddagrif, Kiki-Jiki, Mirror Breaker, Saheeli, the Sun's Brilliance, Krenko, Mob Boss, Myr Propagator, Belisarius Cawl, Myr Matrix, Merieke Ri Berit, Banishing Knack, Rukarumel, Biologist, Blinking Spirit, Cayth, Famed Mechanist, Goblin Welder, Kor Skyfisher, Man-o'-War, Eldrazi Displacer, Splinter Twin, Marrow-Gnawer, Ulamog's Dreadsire, Torpor Orb, Rhys the Redeemed, Wall of Kelp, Aethersnipe, Xerex Strobe-Knight, Weaver of Harmony, The Jolly Balloon Man, Thraben Doomsayer, Sprout Swarm, Fable of the Mirror-Breaker // Reflection of Kiki-Jiki, Ghoulcaller Gisa, Bloodline Keeper // Lord of Lineage, Orthion, Hero of Lavabrink, Hushbringer, Stonecloaker, Jan Jansen, Chaos Crafter, Biogenic Ooze, Hell's Caretaker, Kazandu Tuskcaller, Vedalken Mastermind, Satoru Umezawa, Elemental Mastery, Steward of Solidarity, Lich Lord of Unx, Romana II, Joo Dee, One of Many, Skirsdag High Priest, Livio, Oathsworn Sentinel, Nemata, Grove Guardian, Jade Mage, Hushwing Gryff, Voice of the Woods, Speaker of the Heavens, Ghired, Mirror of the Wilds, Cybernetica Datasmith, Oviya Pashiri, Sage Lifecrafter, Rakka Mar, Godsire, Tocatli Honor Guard, Kianne, Dean of Substance // Imbraham, Dean of Theory, Puppet Conjurer, Tolsimir Wolfblood, Selesnya Evangel, Drana's Chosen, Flamewright, Jungle Patrol, Jund Battlemage)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

1,388 known combos, 84 of them two-card.

• Hullbreaker Horror + Intruder Alarm
  Produces: Infinite mana creatures you control can produce, Infinite storm count, Infinite untap of creatures
  View on Commander Spellbook
• Chulane, Teller of Tales + Intruder Alarm
  Produces: Infinite card draw, Infinite draw triggers, Near-infinite creature ETB
  View on Commander Spellbook
• Shorikai, Genesis Engine + Intruder Alarm
  Produces: Infinite self-discard triggers, Near-infinite creature ETB, Infinite draw triggers
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2023-09-01 · Wizards of the Coast
  If multiple creatures enter the battlefield at one time, this ability triggers once for each of those creatures.

Rulings: Scryfall · Wizards of the Coast