Royal Assassin
Orb of Dreams
Intruder Alarm

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Royal Assassin does not have summoning sickness.

   Steps

How does this combo work?
1
Whenever a creature enters the battlefield under an opponent's control, it enters tapped due to Orb of Dreams and triggers Intruder Alarm.
2
Holding priority, activate Royal Assassin by tapping it, destroying the creature.
3
Resolve the Intruder Alarm trigger, untapping all creatures.
4
Repeat.

   Results

What do I get from this combo?
Destroy each creature that enters the battlefield under an opponent's control
Lock
Archelos, Lagoon Mystic
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