This dream is rich with symbolism and can be interpreted on several levels.

1. Endless Forest: The forest often represents the journey of life. Its endless nature may indicate feelings of being lost or exploring the unknown aspects of yourself or your life path. The glass leaves symbolize fragility and beauty, suggesting that while your experiences may be delicate, they hold a certain luminous quality.
2. The Key: Keys typically symbolize access, potential, and unlocking new opportunities or understandings. The ornate nature of the key suggests that this opportunity is significant and perhaps tied to something deeply personal or valuable.
3. The Pond: Water often represents emotions and the subconscious mind. The clarity of the pond suggests a sense of transparency or understanding of your feelings. Wading into the water represents a willingness to engage with your emotions or inner self.
4. Turning the Key: The act of turning the key in the air symbolizes taking action to unlock new possibilities or perspectives in your life. The opening sky serves as a portal to new experiences and insights, highlighting a transitional phase in your life.
5. Staircase to Another World: Climbing the staircase represents growth, progress, and the journey towards higher consciousness or understanding.
6. Fluffy Realm and Creatures: The soft, fluffy environment may indicate a longing for comfort and safety. The creatures, blending elements of both birds and fish, symbolize freedom and adaptability, suggesting that you may be exploring your creative side and the blending of different aspects of your personality or ideas.
7. Guide: The wise creature represents guidance, wisdom, and the potential for self-discovery. Its invitation to explore lost ideas indicates a call to embrace your creativity and the possibilities that exist within your imagination.
8. Bringing Back the Key: Waking up with the key signifies that you have gained insight or knowledge from this dream state that you can apply to your waking life. It suggests that you have the power to unlock new opportunities and tap into your creativity.

Overall, this dream encourages you to explore your inner world and consider the ideas and possibilities that have been lost or overlooked. It signifies a journey of self-discovery and the potential for transformation. Embrace the magic you felt in the dream and allow it to inspire you in your waking life.