Intruder Alarm +

Intruder Alarm + Phyrexian Altar Combos

20 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite sacrifice triggers Infinite death triggers Infinite colored mana

Combo 1 with Shorikai, Genesis Engine + Phyrexian Altar

Also requires: Shorikai, Genesis Engine Shorikai, Genesis Engine Phyrexian Altar Phyrexian Altar
Results: Infinite card draw · Infinite draw triggers · Infinite looting · Infinite self-discard triggers · Near-infinite death triggers · Near-infinite ETB · Near-infinite LTB · Near-infinite sacrifice triggers · Near-infinite untap of all creatures · Near-infinite creature tokens · Near-infinite card draw · Near-infinite looting
Steps
  1. Cause Shorikai to become a creature.
  2. Activate Shorikai by paying {1} and tapping it, causing you to draw two cards, discard a card, and create a 1/1 Pilot creature token.
  3. The Pilot enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  4. Activate Phyrexian Altar by sacrificing the Pilot, adding one mana of any color.
  5. Repeat.
240 decks Colorless View on Commander Spellbook →

Combo 2 with Zul Ashur, Lich Lord + Phyrexian Altar

Also requires: Zul Ashur, Lich Lord Zul Ashur, Lich Lord Phyrexian Altar Phyrexian Altar
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite storm count · Infinite untap of creatures · Infinite mana creatures you control can produce
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 Phyrexian Altar by sacrificing the Zombie, adding one mana of any color.
  6. Repeat.
74 decks Colorless View on Commander Spellbook →

Combo 3 with Saheeli, the Sun's Brilliance + Phyrexian Altar

Also requires: Saheeli, the Sun's Brilliance Saheeli, the Sun's Brilliance Phyrexian Altar Phyrexian Altar
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite creature tokens with haste · Infinite mana creatures you control can produce · Infinite untap of creatures · Infinite copies of most creatures you control with haste
Show steps
  1. Activate Saheeli by paying {U}{R} and tapping it, creating a token copy of the creature that creates one or more creature token(s) when it enters with haste.
  2. When the creature enters, it and Intruder Alarm trigger.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the creature's trigger, creating at least two creature tokens.
  5. When the creature tokens enter the battlefield, Intruder Alarm triggers twice, untapping all creatures twice.
  6. Activate Phyrexian Altar by sacrificing two creature tokens, adding {U}{R}.
  7. Repeat.
  8. Activate any number of creatures by tapping them, adding at least {U}{R}.
  9. Activate Saheeli by paying {U}{R} and tapping it, creating a token copy of another creature you control with haste.
  10. When the creature token enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  11. Repeat.
  12. If creatures you control can tap to produce at least {1}{U}{R}, this combo nets infinite mana.
53 decks Colorless View on Commander Spellbook →

Combo 4 with Fable of the Mirror-Breaker // Reflection of Kiki-Jiki + Phyrexian Altar

Also requires: Fable of the Mirror-Breaker // Reflection of Kiki-Jiki Fable of the Mirror-Breaker // Reflection of Kiki-Jiki Phyrexian Altar Phyrexian Altar
Results: Infinite creature tokens with haste · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures · Infinite colored mana
Show steps
  1. Activate Reflection of Kiki-Jiki by paying {1} and tapping it, creating a token copy of any other nonlegendary creature you control.
  2. The creature token enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  3. Activate Phyrexian Altar by sacrificing the creature token, adding one mana of any color.
  4. Repeat.
27 decks Colorless View on Commander Spellbook →

Combo 5 with Breya, Etherium Shaper + Master Transmuter + Phyrexian Altar

Also requires: Breya, Etherium Shaper Breya, Etherium Shaper Master Transmuter Master Transmuter Phyrexian Altar Phyrexian Altar
Results: Infinite colored mana · Infinite creature tokens · Infinite damage · Infinite death triggers · Infinite ETB · Infinite lifegain · Infinite lifegain triggers · Infinite LTB · Infinite sacrifice triggers · Reduce the toughness of creatures opponents control to 0
Show steps
  1. Activate Master Transmuter by paying {U}, tapping it and returning Breya from the battlefield to your hand, putting Breya onto the battlefield from your hand.
  2. Breya enters the battlefield, triggering itself and Intruder Alarm.
  3. Resolve the Breya trigger, creating two 1/1 Thopter artifact creature tokens.
  4. The Thopters enter the battlefield, triggering Intruder Alarm twice.
  5. Resolve all Intruder Alarm triggers, untapping all creatures.
  6. Activate Phyrexian Altar by sacrificing a Thopter, adding {U}.
  7. Repeat.
  8. Once you have infinite creature tokens and infinite colored mana, you may activate Breya's ability infinite times.
23 decks Colorless View on Commander Spellbook →

Combo 6 with Enduring Renewal + Phyrexian Altar

Also requires: Enduring Renewal Enduring Renewal Phyrexian Altar Phyrexian Altar
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite storm count · Infinite untap of creatures
Show steps
  1. Activate all mana-producing creatures you control by tapping them, adding at least {1}.
  2. Cast the creature card by paying its mana cost.
  3. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Activate Phyrexian Altar by sacrificing the creature, adding one mana of any color.
  5. When the creature dies, Enduring Renewal triggers, returning the creature to your hand from your graveyard.
  6. Repeat.
22 decks Colorless View on Commander Spellbook →

Combo 7 with Adarkar Valkyrie + Phyrexian Altar

Also requires: Adarkar Valkyrie Adarkar Valkyrie Phyrexian Altar Phyrexian Altar
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite untap of creatures · Infinite mana creatures you control can produce
Show steps
  1. Activate Adarkar Valkyrie by tapping it, targeting another nontoken creature you control.
  2. Activate Phyrexian Altar by sacrificing the creature targeted in step 1, adding one mana of any color.
  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. Repeat.
17 decks Colorless View on Commander Spellbook →

Combo 8 with Fain, the Broker + Pitiless Plunderer + Phyrexian Altar

Also requires: Fain, the Broker Fain, the Broker Pitiless Plunderer Pitiless Plunderer Phyrexian Altar Phyrexian Altar
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite untap of creatures · Infinite mana creatures you control can produce · Infinite Treasure tokens · Infinite creature tokens · Infinite +1/+1 counters on 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 Phyrexian Altar by sacrificing the Inkling, adding one mana of any color.
  4. When the Inkling dies, Pitiless Plunderer triggers, creating a Treasure token.
  5. Repeat.
16 decks Colorless View on Commander Spellbook →

Combo 9 with Skeleton Ship + Geralf's Messenger + Phyrexian Altar

Also requires: Skeleton Ship Skeleton Ship Geralf's Messenger Geralf's Messenger Phyrexian Altar Phyrexian Altar
Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite lifeloss · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures
Show steps
  1. Activate Phyrexian Altar by sacrificing Geralf's Messenger, adding one mana of any color.
  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. Activate Skeleton Ship by tapping it, putting a -1/-1 counter on Geralf's Messenger.
  7. Repeat.
14 decks Colorless View on Commander Spellbook →

Combo 10 with Missy + Skirk Alarmist + Phyrexian Altar

Also requires: Missy Missy Skirk Alarmist Skirk Alarmist Phyrexian Altar Phyrexian Altar
Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures
Show steps
  1. Activate Phyrexian Altar by sacrificing another nontoken nonartifact creature, adding one mana of any color.
  2. 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.
  3. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Activate Skirk Alarmist by tapping it, turning the creature face up.
  5. Repeat.
12 decks Colorless View on Commander Spellbook →

Combo 11 with Dr. Madison Li + Decoction Module + Myr Battlesphere +1 more

Also requires: Dr. Madison Li Dr. Madison Li Decoction Module Decoction Module Myr Battlesphere Myr Battlesphere Phyrexian Altar Phyrexian Altar
Results: Infinite colored mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures
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 Phyrexian Altar by sacrificing Myr Battlesphere, adding one mana of any color.
  10. Repeat.
12 decks Colorless View on Commander Spellbook →

Combo 12 with Xu-Ifit, Osteoharmonist + Phyrexian Altar

Also requires: Xu-Ifit, Osteoharmonist Xu-Ifit, Osteoharmonist Phyrexian Altar Phyrexian Altar
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite mana creatures you control can produce · Infinite untap of creatures
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 Phyrexian Altar by sacrificing the creature returned in step 1.
  4. Repeat.
10 decks Colorless View on Commander Spellbook →

Combo 13 with Dr. Madison Li + Robobrain War Mind + Phyrexian Altar

Also requires: Dr. Madison Li Dr. Madison Li Robobrain War Mind Robobrain War Mind Phyrexian Altar Phyrexian Altar
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite energy counters
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 Phyrexian Altar 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.
7 decks Colorless View on Commander Spellbook →

Combo 14 with Jaxis, the Troublemaker + Phyrexian Altar

Also requires: Jaxis, the Troublemaker Jaxis, the Troublemaker Phyrexian Altar Phyrexian Altar
Results: Infinite draw triggers · Infinite rummaging · Infinite self-discard triggers · Near-infinite death triggers · Near-infinite ETB · Near-infinite LTB · Near-infinite sacrifice triggers · Near-infinite untap of all creatures
Show steps
  1. Activate Jaxis by paying {R}, tapping it and discarding a card, creating a token copy of any nonlegendary creature you control with haste.
  2. The copy enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  3. Activate Phyrexian Altar by sacrificing the copy, adding {R}.
  4. The creature dies, triggering itself, causing you to draw a card.
  5. Repeat.
4 decks Colorless View on Commander Spellbook →

Combo 15 with Skeleton Ship + Geralf's Mindcrusher + Phyrexian Altar

Also requires: Skeleton Ship Skeleton Ship Geralf's Mindcrusher Geralf's Mindcrusher Phyrexian Altar Phyrexian Altar
Results: Infinite colored mana · 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
Show steps
  1. Activate Phyrexian Altar by sacrificing Geralf's Mindcrusher, adding one mana of any color.
  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. Activate Skeleton Ship by tapping it, putting a -1/-1 counter on Geralf's Mindcrusher.
  7. Repeat.
4 decks Colorless View on Commander Spellbook →

Combo 16 with Zimone and Dina + Nadir Kraken + Phyrexian Altar

Also requires: Zimone and Dina Zimone and Dina Nadir Kraken Nadir Kraken Phyrexian Altar Phyrexian Altar
Results: Infinite card draw · Infinite draw triggers · Near-infinite +1/+1 counters on a creature · Near-infinite death triggers · Near-infinite ETB · Near-infinite LTB · Near-infinite sacrifice triggers · Near-infinite untap of all creatures · Put all lands from your hand and library onto the battlefield
Show steps
  1. Activate Zimone and Dina by tapping it and sacrificing another creature, causing you to draw a card, and allowing you to put a land card from your hand onto the battlefield, and then repeating the process one additional time if you control at least eight lands.
  2. Nadir Kraken triggers for each card drawn this way.
  3. Resolve the first Nadir Kraken trigger, causing you to pay {1} to put a +1/+1 counter on it and create a 1/1 Tentacle creature token.
  4. When the Tentacle enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Resolve the second Nadir Kraken trigger, if applicable, choosing not to pay.
  6. Activate Phyrexian Altar by sacrificing the Tentacle, adding {1}.
  7. Repeat.
4 decks Colorless View on Commander Spellbook →

Combo 17 with Goldberry, River-Daughter + Thornbite Staff + Phyrexian Altar +1 more

Also requires: Goldberry, River-Daughter Goldberry, River-Daughter Thornbite Staff Thornbite Staff Phyrexian Altar Phyrexian Altar Stormbound Geist Stormbound Geist
Results: Infinite card draw · Infinite draw triggers · Near-infinite +1/+1 counters · Near-infinite death triggers · Near-infinite ETB · Near-infinite LTB · Near-infinite sacrifice triggers · Near-infinite untap of all creatures
Show steps
  1. Activate Phyrexian Altar by sacrificing Stormbound Geist, adding {U}.
  2. When Stormbound Geist dies, its undying ability and Goldberry trigger.
  3. Resolve the Stormbound Geist trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  4. When Stormbound Geist enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Holding priority, activate Goldberry's first ability by tapping it, moving the +1/+1 counter from Stormbound Geist onto Goldberry.
  6. Resolve the Goldberry trigger from step 2, untapping it.
  7. Activate Goldberry's second ability by paying {U} and tapping it, moving the +1/+1 counter from Goldberry onto any permanent except Stormbound Geist, and causing you to draw a card.
  8. Repeat.
2 decks Colorless View on Commander Spellbook →

Combo 18 with Goldberry, River-Daughter + Thornbite Staff + Phyrexian Altar +1 more

Also requires: Goldberry, River-Daughter Goldberry, River-Daughter Thornbite Staff Thornbite Staff Phyrexian Altar Phyrexian Altar Geralf's Mindcrusher Geralf's Mindcrusher
Results: Infinite card draw · Infinite draw triggers · Near-infinite +1/+1 counters · Near-infinite death triggers · Near-infinite ETB · Near-infinite LTB · Near-infinite mill · Near-infinite sacrifice triggers · Near-infinite untap of all creatures
Show steps
  1. Activate Phyrexian Altar by sacrificing Geralf's Mindcrusher, adding {U}.
  2. When Geralf's Mindcrusher dies, its undying ability and Goldberry trigger.
  3. Resolve the Geralf's Mindcrusher trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  4. When Geralf's Mindcrusher enters the battlefield, it and Intruder Alarm triggers.
  5. Resolve the Geralf's Mindcrusher trigger, causing a player to mill five cards.
  6. Resolve the Intruder Alarm trigger, untapping all creatures.
  7. Holding priority, activate Goldberry's first ability by tapping it, moving the +1/+1 counter from Geralf's Mindcrusher onto Goldberry.
  8. Resolve the Goldberry trigger from step 2, untapping it.
  9. Activate Goldberry's second ability by paying {U} and tapping it, moving the +1/+1 counter from Goldberry onto any permanent except Geralf's Mindcrusher, and causing you to draw a card.
  10. Repeat.
2 decks Colorless View on Commander Spellbook →

Combo 19 with Tempting Licid + Phyrexian Altar + Bramble Elemental

Also requires: Tempting Licid Tempting Licid Phyrexian Altar Phyrexian Altar Bramble Elemental Bramble Elemental
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Tempting Licid by tapping it and paying {G}, attaching it to Bramble Elemental.
  2. Bramble Elemental triggers, creating two Saproling creature tokens.
  3. Intruder Alarm triggers twice.
  4. Activate Phyrexian Altar twice by sacrificing a Saproling creature token, adding {G} each time.
  5. Pay {G} to end Tempting Licid's effect, making it a creture once more.
  6. Resolve both Intruder Alarm triggers, untapping all creatures.
  7. Repeat.
2 decks Colorless View on Commander Spellbook →

Combo 20 with Xavier Sal, Infested Captain + Haunted One + Phyrexian Altar

Also requires: Xavier Sal, Infested Captain Xavier Sal, Infested Captain Haunted One Haunted One Phyrexian Altar Phyrexian Altar
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite untap of creatures · Infinite mana creatures you control can produce · Infinite power for certain creatures until end of turn
Show steps
  1. Activate Xavier Sal's first ability by tapping it and removing a +1/+1 counter from the additional nontoken Human, Fungus and/or Pirate if it has one, or any counter from another permanent you control otherwise.
  2. Xavier Sal triggers, causing it and all other creatures you control that share a creature type with it to get +2/+0 and gain undying until end of turn.
  3. Resolve the Xavier Sal ability, causing you to populate.
  4. Activate Phyrexian Altar by sacrificing the additional Human, Fungus and/or Pirate, adding one mana of any color.
  5. When the creature dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  7. Repeat.
2 decks Colorless View on Commander Spellbook →
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