⠀⠀⠀ they are a particularly sticky situation. if they are truly immortal, then nothing will kill them; they will never be mine. if only one or two things can do the job, then they will /eventually/ be mine. until that day, however, i cannot claim them. if they were cursed to never die, they won’t be mine until the curse is lifted or broken. it’s a complex situation, i’m afraid.