What can I do?

Write him up for his not wanting to follow policy. What can he write you up for? That you wouldn't give him the keys before the count was completed?
Tell him to go right ahead........................a count is a count............and it is your license. And if necessary ask for your warden to be there during a change of shift, then see what happens.

Good luck.

Send him to my office...problem solved.

Don't give in to this bully. He's probably just bluffing anyway. If he tries to make a big deal of this, he'll end up being the one in trouble, so let him.

Keep the keys. YOU follow policy, he will have no choise OR recourse. That simple. A Dep. or Warden will not bother with a matter such as this. He will put it to a subordinate such as a Nurse Administrator or DON.

Let him write you up, and report the verbal abuse every time.

I'd have the paper filled out and ready for him at the end of your shift.