yeah! That\'s very good, but I mean the system of get and incrise the power of the pets.
Like in the pokemon pictures:
If you want a pet you have to get it in combat, but not kill.
After that you can to incrise their skills or their levels: the first one can give to the pet adicional skills in magic or combat, the second one do the pet stronger.
If the pet dead you lost it, unless you fight in special places.
...or something similar to do the training of pets more interesting.