Bank Nifty View for Tomorrow's Expiry

Banknifty has been giving closing at almost the same level for the past 3 days, expecting a big move tomorrow.
if opens flat, Once PDH is taken out, we can buy Banknifty for a good upside move.
To play on the safer side We can wait for the market to consolidate between 38000 - 38180 and then give a breakout.
If BankNifty breaks 37700 level, we can short Banknifty keeping sl of 70/80 points