Don't think that's a PRPPE, I had some before from another reefer who got it from the propagator, doesn't look like the ones I had. plus the PPRPE's is only a green slit in the mouth which most PE's have compared to this Paly which the green extends out towards the disk. It's a large zoanthid.
it's one of those palys coming in now, some have the same pattern like devils armours but just diffrent colors from skirt, outer rim of disk, inner rim of disk , etc... I have some that resemble a devils armor paly except that it's light gold to yellow with outer light green skirt.
Kinda reminds me of some of these Carribean palys/zoas ive been seeing pop up on the seen lately the reason is the black in the center that points to the skirt on 2 sides is a pretty common charateristic of carribean zoas could be wrong though. Where did the rock originate from?