Reviving units during battle probably won't ever be a thing given the way Grand Hero Battles work, but I still hope we see the classical revival staves worked into the game in some way. Here's my attempt at them. First off with Elice, not the only possible wielder of Aum in most games, but the obvious intended choice (and I believe only actual choice in FE1). Elice: Life Giver (Infantry, Staff) Next of course Claud with the Valkyrie, since he doesn't have anyone resembling a can