Remaster Incubus/Succubus build?

So, my players will be getting their second to last companion soon, so I felt it was high time to build the last one as well, finally. And while I made a template for this character ages ago as a Lust Runelord Wizard/Magus dual class, that's not really possible anymore due to remaster. So, yeah. Any ideas as to how I could make an Incubus like character? And a Succubus as well, but thats for my own build and not needed as soon.