what u mean with 3 pets?
Ember + Drakehound + Ranger Pet?
If yes, i think yes.
The guy with the 10x drakehound´s was a minion necro with summoned pets ... he had 13 pets (3 necro pets + 10x drakehounds).
So i think it works with ember too.
It would be crazy, 10 drakehound´s, ember / consumable ranger pet + necro pets (5 pets?)
sry for my english xD