At present, I can only get upgraded toys or buy toys occasionally sold in the mall. By level 25, I can have 25 free toys. Most of my gems are strengthened on HP, reaching 41k, attack power 2K, and HP doubles every time I upgrade.
After entering League 1, you will unlock the player leaderboard. As long as you are willing to spend time, you can almost get a set of cards every week. Normal-Mythical Girl