Bundles are released at team level 40 and can be purchased at the VIP10 store, etc.
When using emeralds for pet summoning, it is recommended to take advantage of sale events. Discount day! are also beneficial, though not as much as sale events.
Pet Summoning
Pet Soul Stone Chest
Bundles
Recommended way to get pet soul stones
The Pet soul Chest can upgrade targeted pets. Most recommended.
If you have enough budget for Emeralds, use them to summon pets to make your team stronger.
Excess Pet Soul Stone
If you have extra Pet Soul Stones, the Pet Soul Stone Shop will be opened!
Pet Potion,Chaos Particle, and Heroes Soul Stone available.