CommanderModernLegacyVintage
Result
Destroy each creature that enters the battlefield under an opponent's control, Lock
Whenever a creature enters the battlefield under an opponent's control, it enters tapped due to Thalia and the Gitrog Monster.
Holding priority, activate Royal Assassin by tapping it, destroying the creature.
When the creature dies, Royal Assassin triggers, untapping Royal Assassin.
Repeat.
Component Cards
How It Works
1
Whenever a creature enters the battlefield under an opponent's control, it enters tapped due to Thalia and the Gitrog Monster.
Holding priority, activate Royal Assassin by tapping it, destroying the creature.
When the creature dies, Royal Assassin triggers, untapping Royal Assassin.
Repeat.