Hello 
I think it might be easier for you to find the answer to your question in the Splinterlands Discord. Here's the invite link - https://discord.gg/G2RtTSj
As for the rest of my usual welcome message - It would also be awesome if you could do an introduction post, so our community can get to know you better. For an example of what an intro post is like, you can check out this one by my friend & curation team member -
Keeping Up With the Buzz - My Introduction to the Hive Community.
Speaking of community, we have many different ones here on the blockchain, devoted to all kinds of interests. Here's a link so you can check them all out - Hive Communities . I see you already found Splinterlands, and you might be interested in the Hive Gaming Community as well.
Also, as Hive can sometimes be quite confusing, the newly launched Newbies Guide should be helpful to you, as it is a growing repository of useful and easy to understand posts about how the Hive ecosystem works.
Please be aware that Hive is a bit different from other social media platforms since you are monetizing your blog, so it is important not to include content that you don't own without sources (and it shouldn't exceed 50% of the post). For more information, check this post - Why and How People Abuse and Plagiarise by 
Since you're new, you may run into an RC (Resource Credits) error when trying to comment/post because you don't yet have enough Hive in your account yet. For assistance with a temporary delegation to get you started, be sure to check out the Gift Giver site.
For now, 
RE: wich new reward card is the Best ?