Breath of Fury attached to any other creature you control.
An opponent is unable to block and kill creatures you control.
Steps
Activate Walking Atlas by tapping it, putting Gruul Turf from your hand onto the battlefield.
Gruul Turf enters the battlefield, triggering itself and Rampaging Baloths.
Resolve the Gruul Turf trigger, returning it from the battlefield to your hand.
Resolve the Rampaging Baloths trigger, creating a 4/4 Beast creature token.
Deal combat damage to an opponent with the creature that has Breath of Fury attached.
Breath of Fury triggers, causing you to sacrifice the creature it is attached to and then attach Breath of Fury to the Beast token, untap all creatures you control, and giving you an additional combat phase after this one.