Intruder Alarm

Intruder Alarm


Creatures don't untap during their controllers' untap steps.

Whenever a creature enters the battlefield, untap all creatures.

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Format Legality
Leviathan Legal
Canadian Highlander Legal
Modern Legal
Block Constructed Legal
Limited Legal
Unformat Legal
Commander / EDH Legal
Highlander Legal
Casual Legal
Legacy Legal
Custom Legal
2019-10-04 Legal
Vintage Legal
1v1 Commander Legal
Duel Commander Legal
Tiny Leaders Legal
Oathbreaker Legal

Intruder Alarm occurrence in decks from the last year

Latest Decks as Commander

Intruder Alarm Discussion

iammute on Maskwood Nexus Goin Wild

1 week ago

Intruder Alarm could be another great untapper here. It’s especially strong with Gravespawn Sovereign , Voice of the Woods and Lullmage Mentor

king-saproling on Never Fear the Grave

1 week ago

You could include combo lines around Intruder Alarm , such as Alarm + Deranged Assistant + Hua Tuo, Honored Physician . There are actually a lot of cheap self-mill creatures that work here like Cathartic Adept , Vantress Gargoyle , and Millikin among many others. Drift of Phantasms could be nice to include here since it can find either Alarm or Hua Tuo.

Another good combo card is Mana Severance . You could follow it up with Balustrade Spy , Hermit Druid , or Undercity Informer to mill your whole library. This is good since you could then flashback Dread Return targeting Necrotic Ooze, which in turn is good if you toss in Necrotic Ooze combo lines (there are many) such as Phyrexian Devourer + Triskelion .

Another notable self-mill card is Cephalid Illusionist . With it and Lightning Greaves you can mill your whole library, 3 cards at a time. The 3 card chunks is significant since you'll get a bunch of triggers from Sidisi, so a finisher like the above-mentioned Necrotic Ooze combo may not be needed since you'll have tons of zombies. Dimir Infiltrator and Muddle the Mixture are nice here since they can find either combo piece.

Doombeard1984 on The Brood

3 weeks ago

+1 from a fellow Hive. I have to agree with use of Henge. yes, it is an expensive card if you draw it early, however, the cost reduction once Sliver Overlord is on the board makes it a paltry . Essentially helps you keep Gas in your hands.

And I have learnt that lesson concerning Intruder Alarm . Always have a way out. Playing it when you are going to "go off" is the way to go.

Feel free to stop by, and have a peek at my deck. Its not the same as yours and Mortlocke's, but its my own heavenly part of the Hive. Opinion greatly appreciated.

Mortlocke on The Brood

3 weeks ago

yinyang64, thanks for the compliment. I appreciate the sentiment that you think my deck is worth using as a skeleton for your own. However, I wish to know more about your vision for your own Sliver deck - and to do that you need a more fleshed out deck description for starters. I always recommend Epochalyptik's Do you want to write a primer? as a good outline. Key questions such as budgetary constraints, personal preferences, deck ideology need to be addressed so that I can make better card suggestions if anything comes to mind.

As for your list so far,'s hard for me to give a critique as it's pretty similar to my own but I can see some key differences. I've always been curious about The Great Henge , but am always concerned about drawing it early game as it would be essentially a dead card. How do you keep from falling into that situation? Following that logic, Intruder Alarm is an excellent card - but my own personal preferences as a player keep me from using it. My old playgroup conditioned me to always assume someone is going to attempt to use your deck against you, so that has shaped my deck building going forward.

This deck is definitely at a strong start, but i'm curious to see what personal touches you make and how your personality will shape it going forward. +1 from me of course.

Doombeard1984 on All hail...The Overlord

1 month ago

JeanYass, Thank you for your response. Whilst I can see yo reasoning, I must disagree on your analysis. Let me address the points you make:

  • Training Grounds - I indeed may only have a few targets for Training Grounds to have an impact on. However, one of those is my commander, Sliver Overlord, enabling me to tutor for any Sliver in my deck, for . Also is super good with Sliver Queen, again making each Slivery Baby only cost . Necrotic Sliver is again, gives me the ability to destroy any permanent for and a Sliver Sacrifice. Also, don't forget, Mirror Entity is also a "Sliver". Thats a reduction in that creatures activation straight away. Essentially, Training Grounds enables my deck to "fire off" easier.

  • Boardwipes - Firstly, boardwipes are kind of a staple of EDH. Sometimes, boardstates get away from you, and you have to reset. Also, with some of the combinations of my boardstates, the effects are way worse for opponents. Sliver Hivelord gives my creatures indestructable. If have a mana producers, such as Manaweft Sliver, Jokulhaups is not as destructive to myself as it is to my opponents, and will leave my enemies mana deprived etc. Blasphemous Act + Spiteful Sliver is a game ender, if I have managed to "go off" and tutor and play all the slivers in my deck (Using Manaweft Sliver/Gemhide Sliver + Intruder Alarm + A haste enabling Sliver) Spiteful Sliver's effect will happen and can kill players off.

  • The other stackable Slivers - I actually used to run the Slivers you mentioned in the your comment. As my deck mainly wins via combo, not so much combat (although it is perfectly capable of "turning sideways"), taking them out was the best option. the +1/+1 and +0/+1 are kind of incidental, and don't cause a massive swing in advantage. Leeching Sliver i always liked, but it is not super relevant to the deck.

Hope this gives you an explanation as to why I have what I have in my deck. Any questions, just ask

Elasar99 on ̶S̶n̶o̶w̶ ̶W̶h̶i̶t̶e̶ Riku and the Seven Dwarves

1 month ago

I have a similar deck with Obeka, Brute Chronologist in the command zone. One of the combos that I use to win in a crazy turn is either Kiki-Jiki, Mirror Breaker or Splinter Twin together with a copy of Seven Dwarves and Intruder Alarm to create infinite copies of Seven Dwarves and kill with them.

WorldEater_42 on What do you have that I cannot obtain?

1 month ago

Hi sSasquatch, thanks for tuning in! The majority of my wins come from

I haven't been able to play in a few months due to a long work trip but would definitely recommend the new Sakashima of a Thousand Faces if you aren't running it already. Happy caging!

RNR_Gaming on All you can eat sushi buffet.

2 months ago

an Intruder Alarm could be interesting in this deck. Though it may require one of those tap make a creature cards to put in some serious work.

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