it's less bring back and more make it so they never died in the first place lol.
and on the second question, yes and maybe. the maybe is cause I have no idea about finding notes and learning new tricks, but I am certain we will learn more on the beastmaster since they've been being foreshadowed for so long and they might be the answer to a lot of our problems or at least a way to explain why some of them happened and how to prevent it from happening again.