---
name: "Intruder Alarm"
mana_cost: "{2}{U}"
cmc: 3
type_line: "Enchantment"
colors: []
color_identity: ["U"]
keywords: []
set: "8ED"
set_name: "Eighth Edition"
collector_number: "86"
rarity: "rare"
artist: "Luca Zontini"
oracle_id: "1e943e04-e213-4781-b1a7-935aad8790e1"
canonical_url: "https://avascry.com/printing/intruder-alarm-8ed"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Intruder Alarm
- **Mana Cost:** `{2}{U}` (CMC: 3)
- **Type:** Enchantment

## Oracle Text
Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.

## Top 4096-Dim Neural Synergies
1. [Dream Tides](/printing/dream-tides-vis.md) — Enchantment
2. [Angel's Trumpet](/printing/angels-trumpet-ulg.md) — Artifact
3. [Misstep](/printing/misstep-mmq.md) — Sorcery
4. [Seedborn Muse](/printing/seedborn-muse-tdc.md) — Creature — Spirit
5. [Awakening](/printing/awakening-sth.md) — Enchantment
6. [Mist of Stagnation](/printing/mist-of-stagnation-jud.md) — Enchantment

## Printing Details
- **Set:** Eighth Edition (8ED) #86
- **Rarity:** Rare
- **Artist:** Luca Zontini

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `legal`

## Official Rulings
- *(2023-09-01)* If multiple creatures enter the battlefield at one time, this ability triggers once for each of those creatures.