Only the Cemetery. Its exactly the reason why "remove from the game" exists. They cant be brought back at all.
Open skills take place "at the same time", so no units will be closed before both open skills took effect. Panther soul causes rankup and it increases Brave's hp, same way as a healing would, so Brave will have 0 hp first, then be healed back to 20.
Something must be wrong with me. I'm giving advices to someone i should kill.