It was supposed to be some other movie, but due to rise in authentic Indian stories from South movies and amidst rising Boycott Bollywood movement. It became Brahmastra. It is evident from AB Sr. calling Shiva a Dragon atleast two times. The Script was meant to be for some other S#@t of the Year style movie typically made by Dharma Productions, but it was linked with innumerable astras giving Brahmastra. And those who are Marvel, DC, Matrix, Lord of the Rings fans will notice nothing new about the special effects, but copies of scenes from those movies.
It is as always with a big budget Bollywood movie since last 20-30 years or so, no story, no good plot, only good actors like AB Sr, SRK, Nagarjuna, etc. carrying the movie's weight on their shoulders. No wonder it is worth 400Cr. And considering our movie watching population if anyone says it is one time watch, then it is definitely a Hit movie.
I am giving two stars, just for the sake of people who did a good job in special effects, but nothing for the script writers and scene directors.