Intruder Alarm


Format Legality
Noble Legal
Leviathan Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
Modern Legal
Vanguard Legal
Legacy Legal
Archenemy Legal
Planechase Legal
Duel Commander Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Printings View all

Set Rarity
Eighth Edition (8ED) Rare
Stronghold (STH) Rare

Combos Browse all

Intruder Alarm


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

Whenever a creature enters the battlefield, untap all creatures.

Price & Acquistion Set Price Alerts




Recent Decks

Intruder Alarm Discussion

Flagellum on Jhoira Artifact Storm o' Doom (competitive edh)

1 day ago

Any suggestions for a more budget friendly build? Obviously the Mox's and other more costly rocks/lands are out. I have seen a list that uses Intruder Alarm along with Banishing Knack targeting a cost artifact creature like Ornithopter. I'm just wondering if the lower budget would break it or if cheeri0s would be better on a budget. Sadly I also run Breya (no restrictive budget there though) so another artifact deck makes me hesitant although this one seems fun as well.

Megalomania on Do you feel lucky punk...

6 days ago

The concept seems better-suited to Jhoira, Weatherlight Captain.

Add lots of mana rocks, Paradox Engine, Intruder Alarm and you’ll get to “reload” your slingers as much as you like.

mtgApprentice21 on Breya, Angry Esper

1 week ago

Something you don't have calls out to several of your cards (i.e. volt key, brighthearth rings, omen clock, and divining top.) It wants to be abused. It's name is Paradox Engine. Infinite draw with the top is so disgustingly beautiful. The combo is extremely flexible because the clock, rings, and volt key are all valid substitutes for one another. The objective is to get two instances of the top's drawing ability on the stack so you draw your new card plus the top itself. Cast the top again, and every nonland permanent you tapped in the entire process (e.g. mana vault/basalt monolith) becomes untapped. Do it all again. The best part is that the Paradox Engine untaps your mana rocks, so infinite mana may become an unintentional, but useful, byproduct of this interaction. While not as impressive as true infinite draw, Paradox Engine + Jhoira, Weatherlight Captain is still an insane draw engine, and will get you very far, very quickly.

Arcum Dagsson, Merchant's Dockhand, Cloud Key, Myr Retriever, Junk Diver, Summoning Station, Intruder Alarm, Blasting Station, Altar of the Brood, Staff of Domination, Battered Golem, Unwinding Clock, and Vedalken Orrery are all great cards. Put the Nevy's Disk back in there too. Switch out Feedback Bolt for Vandalblast. Mycosynth Lattice lets Vandalblast sweep away everyone's stuff and leaves your stuff untouched when cast for the Overload cost. Even though it's a sorcery, the effect, for the same mana cost as the Bolt, is way better. People will often concede because of it.

The final thing I want to add is that Tolarian Academy has been brought into Commander from the banned list, in a rather unexpected way: Storm the Vault. It flips into what is essetially Tolarian Academy. In artifact decks, it flips the turn it's played about 80% of the time, making it a must-have for almost any Breya deck.

kamelyan on Najeela

2 weeks ago

Value? Tokens? I'll let you in on a secret. My Najeela deck will feature Cryptolith Rite, Intruder Alarm, and haste givers like Anger, with Enlightened Tutor of course. Swing with all your warriors, get a token, untap all creatures, tap them for mana, activate Najeela, swing again. It's no Neheb, the Eternal + Aggravated Assault, but it's five-colour funsies.

onehitterquiter on Ertai, The Corrupted token control

2 weeks ago

Merieke Ri Berit, Preacher and Beguiler of Wills could be fun since you can sac what you steal :O Magewright's Stone and Thousand-Year Elixir would allow you to use Ertai multiple times per round. Intruder Alarm would be especially good here if you ran things like Bloodline Keeper  Flip and Thraben Doomsayer. Mimic Vat seems useful as well given all your ETB-effect creatures. Dovescape could be a silly way to dominate the game, especially if you have Guile or Lullmage Mentor out.

I would definitely run more than 31 lands in a deck like this. Maybe remove redundant/low card advantage stuff like Render Silent, Fact or Fiction, and Counterspell and try to increase your land count?

Cool deck! Upvoted :)

HorseFist on game changing cards

3 weeks ago

I made a (non-commander) lab-themed deck with Intruder Alarm, Bazaar of Wonders and Arcane Laboratory in it... so that's a few blue enchantments that might fit?

KawaiiFiveWhoa on First deck

3 weeks ago

put in Intruder Alarm , Banishing Knack Retraction Helix step one: play intruder alarm step two: Retraction Helix on jhoira step three: play Ornithopter tap jhoira to return Ornithopter to hand and play it for free this will trigger the intruder alarm then untap all creatures and repeat all while drawing your entire library. now there are three ways to go either have Aetherflux Reservoir on the battlefield before you go off, play a labortory maniac and win or Grapeshot for 1,000,000,000,000,000,000,000,000,000,000,000,000...

gundulf on Sygg

3 weeks ago

Pariah Pariah's Shield

One or both of these might be worth slotting in. Combined with Sygg you can basically make yourself immune to being attacked by a color of creature or direct damage. Only problem is colorless creatures, and giving protection from white creature damage since that would cause pariah to fall off. Though the shield still works. But Pariah can also be useful in a pinch to drop on some opponents indestructible creature to be immune to damage for awhile and is also a lot cheaper.

Aquitect's Will One Mana to cycle into another card while setting them up for easy island walking shenangins. Also triggers some merfolk tribal.

On that note Quicksilver Fountain could be fun for setting up island walk, in addition to slowly hosing decks that aren't mono blue by turning their lands to island. They're even stuck as simple islands if Quicksilver Fountain is removed. Only way to save them is to let all lands become islands.

Bident of Thassa Card Draw and fun combat manipulations.

If you're not worried about going too hard on the infinite combo I'd throw in an Intruder Alarm. Sets you up for infinite counterspells with lullmage mentor, or infinite tokens with the schoolmaster, or just gaining a shit ton of life with Judge of Currents. Though to maximize that I'd swap out your tap engine for Drowner of Secrets and Mothdust Changeling. Drowner of secrets, in addition to offering infinite mill potential combos as well, is just a nice card to easily dick people over whenever they vampyric tutor or otherwise search for a card to put on top of their library.

As for how to make room for shit, I've been eternally cursed to shit on all attempts to voltron. Also with how low the deck's mana curve is, you could slim down on mana rocks and maybe at the same time put in some Stony Silence or other artifact hate.

Maybe bring Dovescape back again, since you can still do tons of merfolk shenanagins with it in play.

Load more