Pet cards are special within the world of Angel Battles because you can acquire them by breeding or retiring existing pets. There are 5 levels of pets
1 Star: Domestic
2 Star: Wild Easy
3 Star: Wild Hard
4 Star: Epic Pets
5 Star: Elementals
Elementals cannot breed with each other, but all the other types can.
There are four lines of pets (Reptilian, Avian, Feline, and Equestrian) Breeding two pets of the same line will result in an offspring of that same line, while breeding pets from different lines gives a 50–50 chance of each.
Parents with higher Aura Powers will generally have children that start with high aura powers, however, there is somewhat of a reset between generations.
You can currently breed once per 24 hours and you must burn Halo tokens in order to breed.
Although you can sell your cards on any ERC721 marketplace, there might come a time when your pets have served you long and well and deserve a life of leisure. You can send them to the ‘0x0 Pastures’ in exchange for receiving a guaranteed pet one level up. Simply select them in the UI and let them go. Of course, this is irreversible, so think carefully first. You will need to approve the pets contract for 721 tokens in the my account section in order to successfully recycle pets.