u/Conscious_Finish_917

So my idea is having past heroes that the bbeg fought (the idea is my players fight the bbeg at the start as a “intro” and as different stronger characters like they’re finishing a campaign then the bbeg uses those heroes as phylactories) to be the phylactories or something similar but I also want the bbeg to be have 2 stages 1 being melee and the second being magic or vice versa any advice would be nice any advice would be appreciated.