Intruder Alarm
Enchantment
Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.
Mirri was startled by Volrath's apparition—it had no scent.
Illustrated by
Stronghold#34RareEnglishLegality
Rulings
Sep 1, 2023
If multiple creatures enter the battlefield at one time, this ability triggers once for each of those creatures.