Oh wow, it looks like they're all going to be Void maybe.
This will be really cool. So long as you get your Mission out as soon as possible, these guys all definitely look like they'll be overstat for their turn, if Haku is any indication. Having a RFG another Haku in the Discard Pile seems steep, but the result is a really strong effect. Plus I guess you can fuel it anyways with the Mission by discarding other ones in your hand. I can only imagine the hilarity of two Impure Resurrection Decks facing each other.
"I play Haku, and RFG Your Haku from your Discard Pile for my effect."