I definitely feel its not Ritik.
They cant just ruin his character..
And they are showing Rivanya reunion too...means that ritik is already dead n met shivanya..
The one called mahanaagrani is shivangi.
She has to fight with rocky n ritiks look a like..
All thats fine they must show it at start of n3 or at the end of n2 only..
Why link it with n3.
The way Bela is portrayed till now she can do something to shrapmukth naagmani n kill tamsi with the help of Naagmani or lord shiva homself as Tamsi is Andhaka who is said to b supreme evil...