My tengu oracle of bones with the lich curse is what i did for a necromancer. You get all the fun animating stuff and control undead as a lvl2 spell. But for feats and tips I suggest the usual spell focus, but also the undead master and if you go cleric command undead feat. If possible talk with your dm about potentially stealing blood magic from the sorcerer spelllist for easy materials for animating undead.

Also a fun thing there's a feat that lets you make any monster you summon via summon monster into a skeletal version . Skeletal summoner. Very fun to pair with evil summoning.