Your dream is rich with symbolism and themes that may reflect your subconscious thoughts and feelings. Here are some interpretations to consider:

1. Witchcraft and Power: The imagery of being a witch and casting spells suggests a desire for control or influence over your life or situations around you. It may also indicate a struggle with your own power and the moral implications of how you use it.
2. Protection and Nurturing: The little boy represents innocence and vulnerability, and your vow to protect him highlights your nurturing instincts. This could signify a desire to care for others or perhaps a reflection of your own inner child seeking protection.
3. Romantic Activation: The spell that requires a romantic connection to activate may symbolize your feelings about love and relationships. It suggests that you believe love has the power to transform or enhance experiences, but it also points to the complexities of how relationships can affect our lives.
4. Childhood and Soulmates: The idea of seeing your soulmate as a child could represent a longing for purity and innocence in relationships or a desire to reconnect with your own childhood feelings. This dual vision of seeing him as both a child and an adult might indicate that you are grappling with the concept of love across different stages of life.
5. Conflict and Defense: The attack and your subsequent defense mechanisms demonstrate a feeling of being under threat, whether it be emotionally or in your waking life. Your instinct to create a shield for the boy suggests a strong protective nature, but it may also reflect your own need for safety in vulnerable situations.
6. Emotional Connection: The sensation of someone’s arms around you while you were fighting could indicate a yearning for support during challenging times. It may symbolize the need for connection and reassurance, especially when facing adversities.

Overall, this dream seems to weave together themes of power, protection, love, and the complexity of relationships. Reflecting on these elements in your waking life may provide insight into your current emotional state and aspirations. Consider how these themes resonate with your real-life experiences and feelings, and think about what you might want to change or embrace moving forward.