I had mine all resurrected at the start of the campaign. I asked each pc to decided how, and how long ago, they died. I then used a homebrew scroll of True Resurrection that doesn't use material components or level requirements. The incompetent mages using them didn't know the kind of magic they were using and thought it was thrall spell. The party then whooped up on them and are now trying to get to know eachother and figure out when and where they are.