I have a good idea of what your dream is about, but first I have some questions for you.
What is your ethnicity?
What is your religious or spiritual affiliation?
Do you recall what sort of flowers were in the vase?
How did you feel when the voice told you about the Basilisk?
And if you don't mind... what sort of prayers were you saying before you had this dream?
And what was it that you were asking guidance for?
*I realize that these are very personal questions and may not seem relevant. I assure you that they are. This is a very significant dream on a major scale... and there could be different ways of interpreting it depending on your answers to these questions.