![Intruder Alarm [Mystery Booster]](https://cdn.shopify.com/s/files/1/0451/3388/9694/files/83285fae-2a52-5249-9531-a71b59518b75.jpg?v=1768426366)
Intruder Alarm [Mystery Booster]
| Set: | Mystery Booster |
| Type: | Enchantment |
| Rarity: | Rare |
| Cost: | 2U |
| Colors: | U |
Creatures don't untap during their controllers' untap steps.
Whenever a creature enters the battlefield, untap all creatures.
Whenever a creature enters the battlefield, untap all creatures.
One footstep among many is silent. One footstep alone is deafening.