There were castle ruins and tons of snakes everywhere. My grandma grabbed a rattlesnakes rattler and told me that was how they were killed. At some point I was flying and a snake tried to bite me
Dreams about snakes can symbolize fear, transformation, or hidden threats in your waking life. Seeing castle ruins in a dream may suggest that there are aspects of your past or personal history that are crumbling or in need of attention. The presence of your grandma in the dream could represent wisdom, guidance, or protection.
Your grandma grabbing the rattlesnake's rattler to show you how they are killed could indicate a need to confront and overcome your fears or challenges head-on. Flying in a dream often represents a sense of freedom or transcendence, but the snake trying to bite you may suggest that there are still obstacles or dangers that you need to be wary of.
Overall, this dream may be prompting you to confront your fears, address any unresolved issues from your past, and approach challenges with courage and determination. It may be a call to face your fears and take control of your circumstances, knowing that you have the strength and guidance to overcome obstacles.