I didn't quite understand what Bryssa's function was. Or is Air not relevant here? Was it just a random horse?:)

I needed a fast hero for the battle with the lizards. Ciel had 1630 movement points, and Bryssa had 1760, while the others had less or the same. Bryssa has the "Haste" specialty, which was very helpful in the battle with the lizards, because the skeletons rushed in during the second round and finished them all off. And take a look at the saves. There's a lot to learn there too. With a loss of 1 day, everything happens with maximum reliability and without any stress at all.