can anyone recommend me some good past life/reincarnation-themed BL? I just read Prince Ba...

Suujin's list
http://www.mangago.zone/home/mangalist/744197/

http://www.mangago.zone/read-manga/vampire_library/

Palace of bardo is so good you should try it

http://www.mangago.zone/read-manga/palace_of_bardo/

http://www.mangago.zone/read-manga/meeting_him