How it works
Prerequisites
- You control an additional blue or black creature.
Steps
- 1Cast Cavern Harpy by tapping Fallaji Wayfarer and a blue or black creature.
- 2Cavern Harpy enters the battlefield, triggering itself and Intruder Alarm.
- 3Resolve the Cavern Harpy trigger, returning it from the battlefield to your hand.
- 4Resolve the Intruder Alarm trigger, untapping all creatures.
- 5Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?