Where Razia was aloof and untouchable, Aurelia is on the frontlines, calling for war.

Aurelia, the Warleader

Flying, vigilance, haste
Whenever Aurelia attacks for the first time each turn, untap all creatures you control. After this phase, there is an additional combat phase.

Foundations

Multiverse Legends

Leading from behind had never been her style.

Aurelia's last ability doesn't give you any additional main phases. This means that you will move directly from the end of combat step of one combat phase to the beginning of combat step of the next one.