A new item "Wing Ring" has been added. When you have this, your movement cost will be treated as if you were flying, and the enemy's effective against flyers will be applied to you. Also, cannot receive terrain effects when have this item.
The idea for this item was inspired by Tactics Ogre. In Tactics Ogre, it was a strong item with no risk, but FE has an effectiveness system, so it is treated as flying there as well.
For example, Pegasus Riders can dismount and disable their effectiveness, but in the case of Wing Ring, the only way to disable the enemy's effectiveness against flyers is to push it onto someone else. I think it will be interesting and require some ingenuity in operation.
If you are in inaccessible terrain such as peaks and you trade this, or bring it into indoor maps, you may get stuck. I leave that to the discretion of the player.
