Breath of Fury attached to another nontoken creature you control.
You have at least one creature card in your graveyard.
An opponent cannot block creatures you control.
Steps
At the beginning of your combat phase, Ayara triggers, returning a creature card from your graveyard to the battlefield, and giving it haste until end of turn.
Deal combat damage using the creature that has Breath of Fury attached.
Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the nontoken creature Ayara returned, then causing you to untap all creatures you control and to get an additional combat phase after this one.