This is ranking up your Bodyguard friends in Nazjatar, nothing to do with Pet Battles 
Not sure how you got those mixed up but the others in the thread here are correct, no pet battles involved.
Balrók
4 years ago
4 years ago
WHY shall I be forced into a minor aspect of the game - pet battles - for this rank?
AT very least make an alternative achievement to complete this. FX nuke all rares in Mechagon and Nazjatar.
Tizaksul
4 years ago
4 years ago
Memory of lucid dreams rank 3 achievement
