Intruder Alarm 
Enchantment
$3.53 #1727 1.39 28.5 years
Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.
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Cards similar to Intruder Alarm expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Dream Tides92%
$0.46↓#18058↓1.4629.6 years↑
"Creatures don't untap during their controllers' untap steps."
Mudslide89%
$7.57↑#19645↓0.93↓31.3 years↑
"Creatures without flying don't untap during their controllers' untap steps."
Smoke82%
$7.48↑#6504↓1.58↑33.1 years↑
"Players can't untap more than one creature during their untap steps."
Thelon's Curse82%
$0.69↓#31549↓0.93↓31.8 years↑
"Blue creatures don't untap during their controllers' untap steps."
Magnetic Mountain82%
$0.41↓#23092↓1.04↓32.7 years↑
"Blue creatures don't untap during their controllers' untap steps."
An-Zerrin Ruins78%
$3.04↓#21706↓1.08↓30.9 years↑
"Creatures of the chosen type don't untap during their controllers' untap steps."
Awakening76%
$6.51↑#8976↓0.78↓28.5 years
"At the beginning of each upkeep, untap all creatures and lands."
Blizzard76%
$0.85↓#28346↓0.88↓31.3 years↑
"Creatures with flying don't untap during their controllers' untap steps."
Wrath of Marit Lage76%
$0.33↓#24173↓0.75↓31.3 years↑
"Red creatures don't untap during their controllers' untap steps."
Root Cage75%
$0.16↓#31662↓0.00↓26.3 years↓
"Mercenaries don't untap during their controllers' untap steps."
Juntu Stakes75%
$0.31↓#25413↓1.13↓25.9 years↓
"Creatures with power 1 or less don't untap during their controllers' untap steps."
Village Bell-Ringer74%
$0.20↓#3631↓0.40↓14.9 years↓
"When this creature enters, untap all creatures you control."
Stoic Angel74%
$0.64↓#15116↓1.09↓17.9 years↓
"Players can't untap more than one creature during their untap steps."
Energy Storm74%
$1.45↓#27434↓0.36↓31.3 years↑
"Creatures with flying don't untap during their controllers' untap steps."
Meekstone74%
$5.12↑#2829↓1.3733.1 years↑
"Creatures with power 3 or greater don't untap during their controllers' untap steps."
Marble Titan74%
$1.63↓#17913↓1.01↓28.9 years
"Creatures with power 3 or greater don't untap during their controllers' untap steps."
Drumbellower73%
$2.65↓#19210.69↓4.5 years↓
"Untap all creatures you control during each other player's untap step."
Midnight Guard72%
$0.11↓#13897↓0.45↓14.6 years↓
"Whenever another creature enters, untap this creature."
Arena of the Ancients72%
$3.54↑#18794↓1.14↓32.3 years↑
"Legendary creatures don't untap during their controllers' untap steps."
Mist of Stagnation72%
$0.49↓#25253↓1.4124.3 years↓
"Permanents don't untap during their controllers' untap steps."