|Mother and Child|
Mother and Child is Chapter 5 of Fire Emblem: Thracia 776.
Eyvel and Nanna are immediately under your control; take advantage of this, and move them towards the arena's northeastern exit, toward the door. There are three powerful enemy units hell-bent on them, and Nanna will not stand a chance against them. Have Nanna up against the door while Eyvel holds them off. While you make your way towards the door, have Asvel attack the fighters from the other side of the wall; with luck, he'll critical with Grafcalibur.
Unlocking the arena door will have Leif move immediately to Nanna's side, regardless of his position on the map prior to this. He will also stay gray or blue depending on whether he moved or not. From there, Eyvel will be in the Arena's watch-chamber (completely inaccessible from the player), and turned to stone. Mareeta will also be warped out of the Arena, if she appeared. However, the gladiators in the ring facing Eyvel, will not; take caution and be ready to face them before you open that door.