Cipher or Priest

Hello, I am getting back into this game after a several year break because of the turn based mode.

I decided to ask this here as most of the information I can find online is out of date, and the videos that seem in date with information are nearly two hours long

I am struggling over which class to pick. I'd ideally like my pc to be the one who contributes the most to the party in terms of damage and utility. Between Cipher and Priest, which could do this best?

Thanks!