Intruder Alarm 
结界 ～灵气
Mirri was startled by Volrath's apparition—it had no scent.
Artist:
Donato GiancolaShare:
Text:
Creatures don't untap during their controllers' untap steps.Whenever a creature enters the battlefield, untap all creatures.
Rulings:
- 10/4/2004 If multiple creatures enter the battlefield at one time, this ability triggers once for each creature. This doesn’t matter much, but it can in some cases.
Legality:
- standard: Not legal
- future: Not legal
- frontier: Not legal
- modern: Legal
- legacy: Legal
- pauper: Not legal
- vintage: Legal
- penny: Legal
- commander: Legal
- 1v1: Legal
- duel: Legal
- brawl: Legal
- oldschool: Not legal
- historic: Banned
- pioneer: Not legal
- gladiator: Legal
- premodern: Legal
- historicbrawl: Legal
- paupercommander: Not legal
- alchemy: Not legal
- explorer: Not legal
- predh: Legal
- oathbreaker: Legal
- timeless: Legal
- standardbrawl: Not legal
