How to get all sr cards in the behemoth battlefield?

1. The first way to get it is the level reward, which is the command center level of the base. In the early stage, it is more efficient to upgrade the level.

2. Secondly, you can improve quickly through some tasks. After meeting the requirements, you can receive the reward directly in the mail.

3. Finally, we should pay attention to the fact that all the universal cards obtained in this way are more R-level, and there are relatively few SR words, so there are still some restrictions on the early training of behemoths.