This dream is rich with symbolism and can reflect various aspects of your life.

1. Kidnapping by an Evil Witch: This could represent feelings of being trapped or controlled by something in your waking life, perhaps a situation or a person that feels threatening or overwhelming. The witch symbolizes negativity or fears that you perceive in your environment.
2. Super Powers: Your ability to deflect attacks suggests that you possess inner strength and resilience. It indicates you have the capability to overcome challenges and protect yourself from harm.
3. Old Classmate in a Room Full of Mirrors: Mirrors often reflect self-perception and identity. Seeing an old classmate might suggest you are reflecting on past relationships or aspects of yourself that need revisiting. This could also indicate a desire for social connection or a reminder of who you were in the past.
4. Room Full of Tiny People: This imagery could symbolize feelings of being overwhelmed by smaller, perhaps less significant issues that seem to crowd your mind. It might also reflect feelings of empathy or a desire to protect those who are vulnerable.
5. Turning to Air and Becoming Invisible: This transformation signifies adaptability and the ability to evade problems or escape from difficult situations. It highlights your desire for freedom and the ability to navigate through challenges without being seen or noticed.

Overall, this dream showcases your inner strength, adaptability, and ability to confront fears. It may also suggest a need to address past experiences while also encouraging you to embrace your unique qualities and resilience. Consider reflecting on any current challenges or relationships that might be influencing these themes in your dream.