Intruder Alarm


Format Legality
Pre-release Legal
Noble Legal
Leviathan Legal
Magic Duels Legal
Vintage Legal
Modern Legal
Vanguard Legal
Legacy Legal
Archenemy Legal
Planechase Legal
1v1 Commander Legal
Duel Commander Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Printings View all

Set Rarity
Eighth Edition Rare
Stronghold Rare

Combos Browse all

Intruder Alarm


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

Whenever a creature enters the battlefield, untap all creatures.

View at Gatherer Browse Alters

Price & Acquistion Set Price Alerts

Cardhoarder (MTGO)

2.62 TIX $0.86 Foil


Recent Decks

Load more

Intruder Alarm Discussion

dungy4 on Locust God Card Draw

4 days ago

Intruder Alarm!!! I don't know why I didn't think of it sooner. Intruder Alarm + any looter + The Locust God = infinite creatures.

NV_1980 on Infinite Combo Control

1 week ago


First off, interesting list. However, I think I'm seeing two mistakes in your infinite combo list:

Have fun!

ellie-is on Ellie's Saprolings

2 weeks ago


I'll have to think about that!! Going infinite with Sprout Swarm this easily is definitely nice, not to mention the other synergies or the fact it can really disrupt the opponent's game. The main problem with it is not a deckbuilding one but a financial one - I need to spend $16 on Utopia Sprawl already, then I'd have to put $16 more into Intruder Alarm for just two copies, and then at -least- $5 on lands if I go with a set of Yavimaya Coast, but up to $60 if I decide to get Breeding Pool instead...

It's a big investment, but it's something I'll consider for the long term. Thanks again for the suggestion, it's a good one!

Mannu_1978 on Ellie's Saprolings

2 weeks ago


You are right about unique decks, that's the greatest fun to crush a metagame deck with a rogue one.

Would you consider a blue splash for Intruder Alarm (even only 2)?

It's... deadly with sprout swarm... It even can go infinite very easily. Not speaking about synergies with arbor elf and satyr that you already have in...

onehitterquiter on The Statistically Most Unique 5 Color EDH Deck

2 weeks ago

No Paradox Engine? Tomorrow, Azami's Familiar may also be a consideration since it improves your draws and keeps you from decking yourself. Intruder Alarm would be another combo piece. You seem to have your heart set on Progenitus, but I actually think Karona, False God would be a superior general for this deck. It would open the door for a more token-based strategy which fits with much of what you're doing (lookin at Edric, Beck, Forays, Crypt Rite, etc.), and could include neat things like Elemental Mastery, Harvest Season, and Goblinslide. Still a cool deck though, good job.

Goatface on Locust God

2 weeks ago

I think this is all the combos:

The Locust God, Niv-Mizzet, the Firemind, and Intruder Alarm. Tap Niv-Mizzet, the Firemind, draw a card, get an insect, Intruder Alarm untaps Niv-Mizzet, the Firemind, repeat until opponents are dead. I do need to find a free discard outlet in order to not mill myself (discard Guile after discarding everything else). This can be done minus the dmg from Niv-Mizzet, the Firemind with another tap-to-draw such as Arcanis the Omnipotent

Infinite cards and mana:

Draw your card for the turn, get an insect, equip insect with Skullclamp, sac insect to Ashnod's Altar, floating 2 mana, draw a card from Skullclamp, make another insect, rinse and repeat. Again, I haven't gotten around to finding a discard outlet in order to not lose, but this does give you infinite colorless and all of your deck, so maybe I'll add a fat Eldrazi. I do want to keep this semi-budget, (under $250 CAD), so probably not big mama Emrakul, but maybe Emrakul, the Promised End. Also, this mana can be filtered via Gemstone Array in order to do other stuff.

Other infinite mana thing: Get 4 insects, draw a card, trigger Mana Echoes, get 5 colorless, filter through Gemstone Array, use Kefnet the Mindful or spend a bit of mana and trigger The Locust God, draw a card, make an insect, get more colorless, use this to filter and draw, get more, continue until win.

I think that's all of them that I've got at the moment.

bushido_man96 on Sidisi and the Milling Brood

2 weeks ago

Ok, lots of cards there. I think for milling creatures, you should go with Hermit Druid, Undercity Informer, and Gisa and Geralf. Altar of Dementia should go in, too.

For recursion like Oversold Cemetery, Meren of Clan Nel Toth will be great. Palace Siege is another good option. Also, Eternal Witness and Regrowth. I don't think Reclaim and Vile Rebirth do enough in here. I see why you have Repopulate, Death Denied, and Gravepurge, but not sure there aren't better cards to go with, like maybe Haunted Crossroads.

I think I'd get rid of cards like Cremate and Dark Dabbling. If you have them there mostly for the cantrip, better card draw engines like Necropotence, Phyrexian Arena, and Rhystic Study will serve you better. Sylvan Library would be better for card draw early on. Also, it goes along with the library manipulation I mentioned earlier with cards like Mirri's Guile, Soothsaying, and Sensei's Divining Top.

Rooftop Storm + Altar of Dementia + Gravecrawler give you an infinite win combo if you can get the pieces set and go off. I always like to have some combo like this in a deck if I can work it it. Fatestitcher is a great Zombie to have, too. Intruder Alarm might also provide some combo potential.

To help your mana base out, consider adding lands like City of Brass, Reflecting Pool, and Command Tower, along with Commander's Sphere to smooth the colors you need.

Shambling Ghoul, Slitherhead, and Winged Coatl don't seem to fit with what you want do here, and I think those could be replaced.

I'm not sure the infect theme would fit in with what you want to do here, but that's up to you to decide. I hope this helps some.

CharonSquared on Lifespark combo

2 weeks ago

I'm not sure I understand the combo. Is your goal to turn Forbidden Orchard into a creature using Wind Zendikon or Lifespark Spellbomb while Intruder Alarm is in play, then cast your 1-of Walking Ballista to kill your opponent with your infinite mana? I realize you have a lot of tutors, but that's a four card combo that's vulnerable to almost any form of disruption, and you don't have any way to fight the disruption outside of your 1 Pact of Negation.

Load more