Intruder Alarm
Intruder Alarm Price Summary
As of Aug 8, 2026, the cheapest tracked printing of Intruder Alarm is $4.47 (TLE #15, Borderless, Foil), and the most expensive is $108.00 (8ED #86★, Foil). The benchmark price (cheapest playable nonfoil) is $11.66, up 319.4% over 7 days, down 2.9% over 30 days, up 540.7% over 90 days. All-time tracked high: $12.01 (2026).
Intruder Alarm Printings & Prices
Intruder Alarm has 7 tracked printings across 6 sets, in nonfoil and foil finishes, including borderless and showcase treatments.
Sell Intruder Alarm: Buylist Offers
Card Kingdom currently pays $7.50 cash for SLD #229 (Foil); the retail-buylist spread on that printing is 50% (wide).
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| Card Kingdom | SLD #229 | Foil | $7.50 | $14.99 | 50% |
| CoolStuffInc | SLD #229 | Foil | $7.00 | — | — |
| Card Kingdom | SLD #229 | Nonfoil | $6.00 | $11.99 | 50% |
| CoolStuffInc | SLD #229 | Nonfoil | $6.00 | — | — |
| Card Kingdom | 8ED #86 | Nonfoil | $4.00 | $6.99 | 43% |
| Card Kingdom | WOT #21 | Foil | $3.50 | $6.99 | 50% |
| Card Kingdom | STH #34 | Nonfoil | $3.25 | $6.49 | 50% |
| CoolStuffInc | 8ED #86 | Nonfoil | $3.00 | — | — |
| Card Kingdom | PLST #8ED-86 | Foil | $2.75 | $5.49 | 50% |
| Card Kingdom | WOT #21 | Nonfoil | $2.30 | $5.49 | 58% |
Intruder Alarm Rules Text & Legality
Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.
Intruder Alarm is legal in Modern, Legacy and Commander, and not legal in Standard, Pioneer and Pauper.
Intruder Alarm Rulings
- Sep 1, 2023 If multiple creatures enter the battlefield at one time, this ability triggers once for each of those creatures.
Reprints & Reprint Risk
Intruder Alarm has been reprinted 10 times. The Avatar: The Last Airbender Eternal reprint cut the price 65% in 30 days.
| Set | Date | Rarity | Treatment | Price before | Day 1 | 30 days | 90 days |
|---|---|---|---|---|---|---|---|
| TLE #15 | 2025-11-21 | Mythic | Borderless | $3.04 | $1.15 | $1.07 | $1.91 |
| TLE #15 | 2025-11-21 | Mythic | Borderless | — | $4.34 | $2.99 | $2.85 |
| WOT #21 | 2023-09-08 | Rare | Showcase | — | — | — | — |
| WOT #21 | 2023-09-08 | Rare | Showcase | — | — | — | — |
| PLST #8ED-86 | 2022-04-29 | Rare | Standard | — | — | — | — |
| SLD #229 | 2021-06-21 | Rare | Borderless | — | — | — | — |
| SLD #229 | 2021-06-21 | Rare | Borderless | — | — | — | — |
| 8ED #86 | 2003-07-28 | Rare | Standard | — | — | — | — |
| 8ED #86★ | 2003-07-28 | Rare | Standard | — | — | — | — |
| STH #34 | 1998-03-02 | Rare | Standard | — | — | — | — |
TLE #15 
WOT #21 
PLST #8ED-86 
SLD #229 
8ED #86 
STH #34 Intruder Alarm in Commander
Intruder Alarm is the #1,724 most-played card on EDHREC, up 1 place over the last 30 days.
Intruder Alarm FAQ
How much is Intruder Alarm worth?
Intruder Alarm is worth about $11.66 for its cheapest playable printing as of Aug 8, 2026. Prices range from $4.70 to $108.00 across 7 tracked printings.
Is Intruder Alarm legal in Commander?
Yes — Intruder Alarm is legal in Commander. It is also legal in Modern and Legacy.
Has Intruder Alarm been reprinted?
Yes — Intruder Alarm has been reprinted 10 times, with 7 printings tracked on The Index.
Why is Intruder Alarm expensive?
Intruder Alarm holds a $11.66 price because Commander demand is high (#1,724 on EDHREC) and even with 10 reprints, demand keeps pace with supply.