The Swan in Grow a Garden is a rare divine pet from the Fall Egg with a 1% chance of hatching. Its unique abilities make it very powerful and flexible:

• Once every 24 minutes, the Swan can move to another player's pet, befriend it, and perform that pet's ability as its own. This essentially lets the Swan copy any other pet's power, giving access to multiple abilities without owning the other pets directly.
• Every 5 minutes, the Swan applies the Graceful mutation to a random fruit in your garden. This mutation boosts the value of the crops steadily over time, helping keep your farm profitable.
• The Swan works well solo as a consistent mutation booster and can scale up dramatically in public servers by copying strong pets nearby, making it arguably one of the most underrated and versatile pets in the game.

In summary, the Swan enhances your garden by mimicking other pets' powers and increasing crop value through mutation, offering both flexibility and steady growth boosts.