Prerequisites
- Cavern Harpy in hand
- Morophon, the Boundless on the battlefield
- "Harpy" or "Beast" chosen with Morophon
Steps
- Cast Cavern Harpy by paying
- Cavern Harpy enters the battlefield, returning itself from the battlefield to your hand
- Repeat
Results
Required Cards 2
Cavern Harpy
Creature — Harpy Beast
Morophon, the Boundless
Legendary Creature — Shapeshifter