Since the new update, is there a new setup around that people are using? I'm not sure the attack styles of the revenant ghosts

nop, keep d hide on.

Revs spawning near the abyss entrance aka dark mage seems to be very rare. I did more than 50 runs yesterday and only saw them a couple of times and commonly they were level 7 imps or level 13 ghosts. I did once see a level 103 ork so if your around level 100 i would just say watch out and if you wanted bring a varrock teletab.

Mage defense just like before.

 

But revs there are rare.

 

Treat em just like pk'es:

 

Check before making run, then switch to another world and try again.