Hohige
Explorer
As for guessing if the the opponent is strength base or not, it is easy. Heavy armor give you a pretty good idea. Especially if wearing plate...
As for disapearing, no, spell at the ready, no hide action taken. Just an interaction which you have one free (sometimes more, bur that is DM fiat). Again, it is the PHB. I can tell you in private if you want to.
If allowed a familliar and a simulacrum, the figth is even more ridiculously in favor of the diviner. If multiple simulacrums are allowed, up to the 20,000 gold pieces limit, then the fight is really one sided in favor of the diviner.
Not against 100 coualt dispeling and counterspelling.