This is short guide for a nice team which helps you slay all those single pet legendary battles.
Setup:
1. Yu`la.Broodling of Yu-lon - Breath / Celestial blessing / Life Exchange
2. Zandalari Kneebiter (341 power breed) - Hunting party / Black claw / Bloodfang
3. Random pet. I usually use 341P Kneebiter here also.
Turns
1. Celesial blessing.
2. Life exchange
3. Breath until you die
When your Yu´la dies bring in Kneebiter and you will gain -50% dmg taken shield for 3 rounds which makes your kneebiter godly.
1: Black claw
2. Hunting party
3. Bloodfang if target ain´t dead yet.
You might wanna start with Kneebiter on wanderer since he sometimes tidal waves forever.