Altar of Dementia + Intruder Alarm

Altar of Dementia + Intruder Alarm Combos

20 known combos featuring both cards in Commander

Infinite death triggers Infinite ETB Infinite LTB Infinite mana creatures you control can produce Infinite sacrifice triggers

Combo 1 with The Master, Transcendent + Golgari Thug

Also requires: The Master, Transcendent The Master, Transcendent Golgari Thug Golgari Thug
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Steps
  1. Activate Altar of Dementia by sacrificing Golgari Thug.
  2. When Golgari Thug dies, it triggers, putting itself from your graveyard on top of your library.
  3. Resolve the Altar of Dementia ability, causing you to mill Golgari Thug from your library.
  4. Activate The Master by tapping it, putting Golgari Thug from your graveyard onto the battlefield.
  5. When Golgari Thug enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  6. Repeat.
61 decks Colorless View on Commander Spellbook →

Combo 2 with Xu-Ifit, Osteoharmonist

Also requires: Xu-Ifit, Osteoharmonist Xu-Ifit, Osteoharmonist
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite mana creatures you control can produce · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Xu-Ifit by tapping it, returning a creature card from your graveyard to the battlefield.
  2. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  3. Activate Altar of Dementia by sacrificing the creature returned in step 1.
  4. Repeat.
39 decks Colorless View on Commander Spellbook →

Combo 3 with Zul Ashur, Lich Lord

Also requires: Zul Ashur, Lich Lord Zul Ashur, Lich Lord
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite untap of creatures · Infinite mana creatures you control can produce · Infinite untap of creatures you control
Show steps
  1. Activate Zul Ashur by tapping it, targeting a Zombie card in your graveyard.
  2. Activate any number of creatures you control by tapping them, adding enough mana to cast the Zombie.
  3. Cast the Zombie from your graveyard by paying its mana cost.
  4. When the Zombie enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Activate Altar of Dementia by sacrificing the Zombie, causing target player to mill cards equal to the sacrificed creature's power.
  6. Repeat.
37 decks Colorless View on Commander Spellbook →

Combo 4 with Adarkar Valkyrie

Also requires: Adarkar Valkyrie Adarkar Valkyrie
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite untap of creatures · Infinite mana creatures you control can produce · Infinite untap of creatures you control
Show steps
  1. Activate Adarkar Valkyrie by tapping it, targeting another nontoken creature you control.
  2. Activate Altar of Dementia by sacrificing the creature targeted in step 1.
  3. When the creature dies, Adarkar Valkyrie triggers, returning the sacrificed creature from your graveyard to the battlefield.
  4. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  6. Repeat.
17 decks Colorless View on Commander Spellbook →

Combo 5 with Horde of Notions + Jegantha, the Wellspring

Also requires: Horde of Notions Horde of Notions Jegantha, the Wellspring Jegantha, the Wellspring
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing any other nontoken Elemental creature, causing target player to mill cards equal to the sacrificed creature's power.
  2. Activate Jegantha by tapping it, adding {W}{U}{B}{R}{G} that can't be spent to pay generic mana costs.
  3. Activate Horde of Notions by paying {W}{U}{B}{R}{G}, casting any Elemental creature from your graveyard without paying its mana cost.
  4. The Elemental enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  5. Repeat.
17 decks Colorless View on Commander Spellbook →

Combo 6 with The Master, Transcendent + Mortuary

Also requires: The Master, Transcendent The Master, Transcendent Mortuary Mortuary
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing another nontoken creature with power 1 or greater.
  2. When the creature dies, Mortuary triggers, putting the creature from your graveyard on top of your library.
  3. Resolve the Altar of Dementia ability, causing you to mill the creature from your library.
  4. Activate The Master by tapping it, putting the creature from your graveyard onto the battlefield.
  5. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  6. Repeat.
16 decks Colorless View on Commander Spellbook →

Combo 7 with Skeleton Ship + Geralf's Messenger

Also requires: Skeleton Ship Skeleton Ship Geralf's Messenger Geralf's Messenger
Results: Infinite death triggers · Infinite ETB · Infinite lifeloss · Infinite LTB · Infinite mana creatures you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing Geralf's Messenger.
  2. Geralf's Messenger dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  3. Geralf's Messenger enters the battlefield, triggering itself and Intruder Alarm.
  4. Resolve the Geralf's Messenger trigger, causing an opponent to lose 2 life.
  5. Resolve the Intruder Alarm trigger, untapping all creatures.
  6. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Geralf's Messenger's power.
  7. Activate Skeleton Ship by tapping it, putting a -1/-1 counter on Geralf's Messenger.
  8. Repeat.
8 decks Colorless View on Commander Spellbook →

Combo 8 with The Master, Transcendent + Hua Tuo, Honored Physician

Also requires: The Master, Transcendent The Master, Transcendent Hua Tuo, Honored Physician Hua Tuo, Honored Physician
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing another nontoken creature with power 1 or greater.
  2. Holding priority, activate Hua Tuo by tapping it, putting the creature from your graveyard on top of your library.
  3. Resolve the Altar of Dementia ability, causing you to mill the creature from your library.
  4. Activate The Master by tapping it, putting the creature from your graveyard onto the battlefield.
  5. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  6. Repeat.
8 decks Colorless View on Commander Spellbook →

Combo 9 with Fain, the Broker + Pitiless Plunderer

Also requires: Fain, the Broker Fain, the Broker Pitiless Plunderer Pitiless Plunderer
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite untap of creatures · Infinite mana creatures you control can produce · Infinite untap of creatures you control
Show steps
  1. Activate Fain's third ability by tapping it and sacrificing another artifact, creating a 2/1 Inkling creature token.
  2. When the Inkling enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  3. Activate Altar of Dementia by sacrificing the Inkling.
  4. When the Inkling dies, Pitiless Plunderer triggers, creating a Treasure token.
  5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the Inkling's power.
  6. Repeat.
6 decks Colorless View on Commander Spellbook →

Combo 10 with Missy + Skirk Alarmist

Also requires: Missy Missy Skirk Alarmist Skirk Alarmist
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing another nontoken nonartifact creature When the creature dies, Missy's first ability triggers, returning the creature from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
  2. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  3. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power.
  4. Activate Skirk Alarmist by tapping it, turning the creature face up.
  5. Repeat.
6 decks Colorless View on Commander Spellbook →

Combo 11 with Skeleton Ship + Geralf's Mindcrusher

Also requires: Skeleton Ship Skeleton Ship Geralf's Mindcrusher Geralf's Mindcrusher
Results: Infinite death triggers · Infinite ETB · Infinite lifeloss · Infinite LTB · Infinite mana creatures you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing Geralf's Mindcrusher.
  2. Geralf's Mindcrusher dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  3. Geralf's Mindcrusher enters the battlefield, triggering itself and Intruder Alarm.
  4. Resolve the Geralf's Mindcrusher trigger, causing target player to mill five cards.
  5. Resolve the Intruder Alarm trigger, untapping all creatures.
  6. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Geralf's Mindcrusher's power.
  7. Activate Skeleton Ship by tapping it, putting a -1/-1 counter on Geralf's Mindcrusher.
  8. Repeat.
4 decks Colorless View on Commander Spellbook →

Combo 12 with Pulsemage Advocate

Also requires: Pulsemage Advocate Pulsemage Advocate
Results: Infinite card draw for opponents · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing a creature with power three or greater, causing target opponent to mill cards equal to the sacrificed creature's power.
  2. Activate Pulsemage Advocate by tapping it and putting three cards from an opponent's graveyard into their owner's hand, returning the creature from your graveyard to the battlefield.
  3. The creature enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  4. Repeat.
3 decks Colorless View on Commander Spellbook →

Combo 13 with Dr. Madison Li + Decoction Module + Myr Battlesphere

Also requires: Dr. Madison Li Dr. Madison Li Decoction Module Decoction Module Myr Battlesphere Myr Battlesphere
Results: Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Dr Madison Li's third ability by tapping it and paying {E}{E}{E}{E}{E}, returning Myr Battlesphere from your graveyard to the battlefield.
  2. When Myr Battlepshere enters the battlefield, it, Intruder Alarm and Decoction Module triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Decoction Module trigger, causing you to get {E}.
  5. Resolve the Myr Battlesphere trigger, creating four 1/1 Myr artifact creature tokens.
  6. When the Myrs enter the battlefield, Intruder Alarm and Decoction Module trigger four times.
  7. Resolve all Intruder Alarm triggers, untapping all creatures.
  8. Resolve all Decoction Module triggers, causing you to get {E}{E}{E}{E}.
  9. Activate Altar of Dementia by sacrificing Myr Battlesphere, causing target player to mill cards equal to Myr Battlesphere's power.
  10. Repeat.
3 decks Colorless View on Commander Spellbook →

Combo 14 with Drafna, Founder of Lat-Nam + Su-Chi Cave Guard

Also requires: Drafna, Founder of Lat-Nam Drafna, Founder of Lat-Nam Su-Chi Cave Guard Su-Chi Cave Guard
Results: Infinite colorless mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers · Infinite mill · Infinite self-mill · Infinite mana creatures you control can produce · Infinite untap of creatures you control
Show steps
  1. Cast Su-Chi Cave Guard by paying {8}.
  2. Holding priority, activate Drafna's second ability by paying {3} and tapping it, copying the Su-Chi Cave Guard spell.
  3. Resolve the copy of the Su-Chi Cave Guard spell, creating a token copy of Su-Chi Cave Guard.
  4. The token Su-Chi Cave Guard enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  5. Activate Altar of Dementia by sacrificing the Su-Chi Cave Guard token.
  6. The token Su-Chi Cave Guard dies, adding eight {C}.
  7. Resolve the Altar of Dementia ability, milling any player eight cards.
  8. Repeat from step 2.
  9. Once you have infinite mana, you may repeat steps 2 through 4 any number of times.
2 decks Colorless View on Commander Spellbook →

Combo 15 with The Master, Transcendent + Aphetto Vulture

Also requires: The Master, Transcendent The Master, Transcendent Aphetto Vulture Aphetto Vulture
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite self-mill · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing Aphetto Vulture.
  2. When Aphetto Vulture dies, it triggers, putting itself from your graveyard on top of your library.
  3. Resolve the Altar of Dementia ability, causing you to mill Aphetto Vulture from your library.
  4. Activate The Master by tapping it, putting Aphetto Vulture from your graveyard onto the battlefield.
  5. When Aphetto Vulture enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  6. Repeat.
2 decks Colorless View on Commander Spellbook →

Combo 16 with Otherworldly Escort + Amoeboid Changeling

Also requires: Otherworldly Escort Otherworldly Escort Amoeboid Changeling Amoeboid Changeling
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite mana creatures you control can produce · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Amoeboid Changeling's second ability by tapping it, causing Otherworldly Escort to lose all creature types until end of turn.
  2. Activate Altar of Dementia by sacrificing Otherworldly Escort.
  3. When Otherworldly Escort dies, it triggers, returning itself from your graveyard to the battlefield as a Spirit Detective.
  4. When Otherworldly Escort enters, Intruder Alarm triggers, untapping all creatures.
  5. Resolve the Altar of Dementia ability.
  6. Repeat.
1 decks Colorless View on Commander Spellbook →

Combo 17 with Sin, Unending Cataclysm + Selvala, Heart of the Wilds

Also requires: Sin, Unending Cataclysm Sin, Unending Cataclysm Selvala, Heart of the Wilds Selvala, Heart of the Wilds
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite mana creatures you control can produce · Infinite untap of creatures · Infinite commander casts · Infinite +1/+1 counters on a creature · Infinite untap of creatures you control
Show steps
  1. Cast Sin either from your hand or command zone by paying {5}{G}{U} plus commander tax if applicable.
  2. As Sin enters, remove all counters from all artifacts, enchantments and creatures you control, putting twice that many +1/+1 counters on Sin.
  3. When Sin enters, Intruder Alarm triggers, untapping all creatures.
  4. Activate Selvala by paying {G} and tapping it, adding at least {G}{G}{U} plus an additional {X} equal to Sin's power minus 3.
  5. Activate Altar of Dementia by sacrificing Sin.
  6. Choose to return Sin to the command zone from your graveyard.
  7. When Sin dies, it triggers, putting its counters on Selvala.
  8. Resolve the Altar of Dementia ability.
  9. Repeat.
1 decks Colorless View on Commander Spellbook →

Combo 18 with Sin, Unending Cataclysm + Kami of Whispered Hopes

Also requires: Sin, Unending Cataclysm Sin, Unending Cataclysm Kami of Whispered Hopes Kami of Whispered Hopes
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite mana creatures you control can produce · Infinite untap of creatures · Infinite commander casts · Infinite +1/+1 counters on a creature · Infinite untap of creatures you control
Show steps
  1. Cast Sin either from your hand or command zone by paying {5}{G}{U} plus commander tax if applicable.
  2. As Sin enters, remove all counters from all artifacts, enchantments and creatures you control, putting twice that many +1/+1 counters on Sin plus one due to Kami of Whispered Hopes.
  3. When Sin enters, Intruder Alarm triggers, untapping all creatures.
  4. Activate Altar of Dementia by sacrificing Sin.
  5. Choose to return Sin to the command zone from your graveyard.
  6. When Sin dies, it triggers, putting its counters plus an additional +1/+1 counter on Kami of Whispered Hopes.
  7. Resolve the Altar of Dementia ability.
  8. Activate Kami of Whispered Hopes by tapping it, adding an amount of {G} or {U} equal to its power.
  9. Repeat.
1 decks Colorless View on Commander Spellbook →

Combo 19 with Dr. Madison Li + Robobrain War Mind

Also requires: Dr. Madison Li Dr. Madison Li Robobrain War Mind Robobrain War Mind
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite energy counters · Infinite mana creatures you control can produce · Infinite untap of creatures you control
Show steps
  1. Cast Robobrain War Mind by paying {3}{U}.
  2. When Robobrain War Mind enters, it and Intruder Alarm trigger.
  3. Resolve the Robobrain War Mind trigger, causing you to get {E} for each artifact creature you control.
  4. Resolve the Intruder Alarm trigger, untapping all creatures.
  5. Activate Altar of Dementia by sacrificing Robobrain War Mind.
  6. Activate Dr. Madison Li by tapping it and paying {E}{E}{E}{E}{E}, returning Robobrain War Mind from your graveyard to the battlefield.
  7. Repeat from step 2.
1 decks Colorless View on Commander Spellbook →

Combo 20 with Twilight's Call + Mnemonic Wall + Deathbloom Ritualist

Also requires: Twilight's Call Twilight's Call Mnemonic Wall Mnemonic Wall Deathbloom Ritualist Deathbloom Ritualist
Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite magecraft triggers · Infinite mana creatures you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Altar of Dementia by sacrificing Mnemonic Wall, causing target player to mill cards equal to Mnemonic Wall's power.
  2. Activate Deathbloom Ritualist by tapping it, adding at least {B}{B}{B}{B}.
  3. Cast Twilight's Call by paying {4}{B}{B}, causing each player to return all creature cards from their graveyard to the battlefield.
  4. Mnemonic Wall and each creature enters the battlefield, triggering Intruder Alarm that many times and Mnemonic Wall once.
  5. Holding priority, activate Altar of Dementia by sacrificing another nontoken creature, causing target player to mill cards equal to the sacrificed creature's power.
  6. Resolve the Mnemonic Wall trigger, causing you to return Twilight's Call from your graveyard to your hand.
  7. Resolve the first Intruder Alarm trigger, untapping all creatures.
  8. Activate Deathbloom Ritualist by tapping it, adding at least one mana of any color.
  9. Repeat from step 7 for each remaining trigger.
  10. Activate Altar of Dementia by sacrificing another nontoken creature, causing target player to mill cards equal to the sacrificed creature's power.
  11. Repeat step 10 until you have at least six creature cards in your graveyard.
  12. Repeat.
1 decks Colorless View on Commander Spellbook →
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Combo Mill Cantrip Token Removal

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Altar of Dementia → All Altar of Dementia Combos → Intruder Alarm → All Intruder Alarm Combos →
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