Magical Coin
Magical Coin (まじ かるコイン) is an ability in Densetsu no Starfy 4. It is the second Spill Points based ability in the game, and it is taught to both Starfy and Starly by Amiiyoshino in Tree of Beginning.
Using it drains all of Starfy and Starly's SP, and makes a large spinning coin appear above Starfy or Starly's head, which will eventually stop spinning. The coin has a chance of either stopping on one side marked with an illustration of a star, or another side marked with an illustration of dung. If the coin lands on 'star', all enemies nearby will turn into big Pearls, and the Pearls will fly towards Starfy or Starly, however if the coin lands on 'dung', all enemies nearby will turn into enemies representing the dung, which will move horizontally towards Starfy or Starly before moving off of the screen.